This paper presents the design and implementation of a closed-loop solar tracker system. The demand for clean energy sources has increased along with the rising demand for electrical energy and the increasing amount of environment pollution triggered by fuel consumption. Among these sources, solar energy is considered the most feasible given its wide availability and easy operation in different environments. The main purpose of this study is to maximize the generated photovoltaic power and reduce CO2 emissions by designing an efficient and low-cost solar tracking system. An aligned closed-loop solar tracker is designed and constructed to achieve the best accuracy. The proposed system shows more freedom in its movement to overcome the problems associated with the tilt of the frame-holder. A PIC microcontroller based on the Flowcode programming language is used, the position feedback is detected by using a photo-sensor, and the H-Bridge driver is used to control two DC motors. According to the experimental results, the proposed system shows significant improvements in efficiency compared with stationary solar tracking systems.
Power output from a small solar panel can be affected by its power consumption when it consumes power from the solar panel. There has been a lack of proper research and experiment in the use of small solar panel with tracking systems. Its significance was detailed in this paper where the voltage output are compared with those which were externally powered. The solar trackers and a microcontroller have been designed and fabricated for this research. Due to the use of the tracking system (single axis and dual axis), the power consumption varies from one to another and its effect on the voltage output. Several experiments have been conducted and it was concluded that small solar panels are not efficient enough to utilize with tracking capabilities due to an increase in power consumption. The externally powered system was found to generate 18% more output compared to a selfsustaining system and that the increase in average power consumptions compared to a fixed panel were 31.7% and 82.5% for single-axis and dualaxis tracker respectively. A concrete evidence was made that utilizing solar tracking capabilities for low power rated solar panel is unfeasible.
Design of Dual Axis Solar Tracker System Based on Fuzzy Inference Systems ijscai
Electric power is a basic need in today’s life. Due to the extensive usage of power, there is a need to look
for an alternate clean energy source. Recently many researchers have focused on the solar energy as a
reliable alternative power source. Photovoltaic panels are used to collect sun radiation and convert it into
electrical energy. Most of the photovoltaic panels are deployed in a fixed position, they are inefficient as
they are fixed only at a specific angle. The efficiency of photovoltaic systems can be considerably increased
with an ability to change the panels angel according to the sun position. The main goal of such systems is
to make the sun radiation perpendicular to the photovoltaic panels as much as possible all the day times.
This paper presents a dual axis design for a fuzzy inference approach-based solar tracking system. The
system is modeled using Mamdani fuzzy logic model and the different combinations of ANFIS modeling.
Models are compared in terms of the correlation between the actual testing data output and their
corresponding forecasted output. The Mean Absolute Percent Error and Mean Percentage Error are used
to measure the models error size. In order to measure the effectiveness of the proposed models, we
compare the output power produced by a fixed photovoltaic panels with the output which would be
produced if the dual-axis panels are used. Results show that dual-axis solar tracker system will produce
22% more power than a fixed panels system.
KEYWORDS
Fuzzy, Membership function, Universe of discourse, PV, ANFIS, DC motor, FLC.
1. INTRODUCTION
Fuzzy logic can be viewed as an extension of classical logical
The document describes a student project to design and test a universal solar tracker. A prototype solar tracking system was designed in SolidWorks and built using existing components. An Arduino microcontroller board controls the system based on input from light dependent resistors. Testing found that the solar tracker increased power output over a fixed position system, demonstrating the benefits of tracking systems for improving photovoltaic solar energy efficiency. A cost analysis found the system would sell for £551.14, significantly lower than other trackers on the market.
This document is a project report on the enhancement of a solar tracking system submitted in partial fulfillment of a Bachelor of Engineering degree. It includes an introduction outlining the project, a review of the project objectives, the evolution of solar trackers, and descriptions of the key system components and design considerations for the solar tracking system. The report covers types of solar trackers, the sun's apparent motion, specifications of the parts used, assembly techniques, working principles, programming, analysis, and conclusions. The project aims to develop an automatic solar tracking system to keep solar panels aligned with the sun to maximize energy production.
Development of Automatic PV Power Pack Servo Based Single Axis Solar Tracking...IOSR Journals
This document describes the development of an automatic single-axis solar tracking system using a servo motor mechanism. The system includes light dependent resistors (LDRs) to sense sunlight intensity, a microcontroller to send signals to the servo motor, and a mechanical structure to support the photovoltaic panel. The controller coding and servo mechanism were first simulated using PROTEUS 7 software. Then a prototype was developed including the mechanical structure, LDR sensors, microcontroller, servo motor, and battery. Testing showed the tracking system improved average efficiency by 7.67% compared to a fixed panel.
SOLAR ENERGY TRACKER SYSTEM SEMINAR REPORTeeeraviriet
The document discusses renewable energy sources and focuses on solar photovoltaic energy. It states that solar PV capacity has grown rapidly in recent decades and is expected to become a major energy source in the future. However, solar PV still needs to be improved to maximize output, especially in areas with less sunlight. The project aims to develop a prototype solar tracking system to more efficiently orient panels toward the sun and increase solar PV performance.
This document provides an introduction and overview of a student project to design an automatic single axis solar tracker using a microcontroller. The project aims to increase the power generated by a solar panel by keeping it perpendicular to the sun's rays as the sun moves across the sky. The system will use light dependent resistors and a comparator circuit to sense the sun's position and control a stepper motor to adjust the panel orientation accordingly. It outlines the components that will be used, including an AT89S51 microcontroller, light sensors, a comparator IC, stepper motor, and driver circuitry. It also includes diagrams of the overall system design and the power supply circuit.
Power output from a small solar panel can be affected by its power consumption when it consumes power from the solar panel. There has been a lack of proper research and experiment in the use of small solar panel with tracking systems. Its significance was detailed in this paper where the voltage output are compared with those which were externally powered. The solar trackers and a microcontroller have been designed and fabricated for this research. Due to the use of the tracking system (single axis and dual axis), the power consumption varies from one to another and its effect on the voltage output. Several experiments have been conducted and it was concluded that small solar panels are not efficient enough to utilize with tracking capabilities due to an increase in power consumption. The externally powered system was found to generate 18% more output compared to a selfsustaining system and that the increase in average power consumptions compared to a fixed panel were 31.7% and 82.5% for single-axis and dualaxis tracker respectively. A concrete evidence was made that utilizing solar tracking capabilities for low power rated solar panel is unfeasible.
Design of Dual Axis Solar Tracker System Based on Fuzzy Inference Systems ijscai
Electric power is a basic need in today’s life. Due to the extensive usage of power, there is a need to look
for an alternate clean energy source. Recently many researchers have focused on the solar energy as a
reliable alternative power source. Photovoltaic panels are used to collect sun radiation and convert it into
electrical energy. Most of the photovoltaic panels are deployed in a fixed position, they are inefficient as
they are fixed only at a specific angle. The efficiency of photovoltaic systems can be considerably increased
with an ability to change the panels angel according to the sun position. The main goal of such systems is
to make the sun radiation perpendicular to the photovoltaic panels as much as possible all the day times.
This paper presents a dual axis design for a fuzzy inference approach-based solar tracking system. The
system is modeled using Mamdani fuzzy logic model and the different combinations of ANFIS modeling.
Models are compared in terms of the correlation between the actual testing data output and their
corresponding forecasted output. The Mean Absolute Percent Error and Mean Percentage Error are used
to measure the models error size. In order to measure the effectiveness of the proposed models, we
compare the output power produced by a fixed photovoltaic panels with the output which would be
produced if the dual-axis panels are used. Results show that dual-axis solar tracker system will produce
22% more power than a fixed panels system.
KEYWORDS
Fuzzy, Membership function, Universe of discourse, PV, ANFIS, DC motor, FLC.
1. INTRODUCTION
Fuzzy logic can be viewed as an extension of classical logical
The document describes a student project to design and test a universal solar tracker. A prototype solar tracking system was designed in SolidWorks and built using existing components. An Arduino microcontroller board controls the system based on input from light dependent resistors. Testing found that the solar tracker increased power output over a fixed position system, demonstrating the benefits of tracking systems for improving photovoltaic solar energy efficiency. A cost analysis found the system would sell for £551.14, significantly lower than other trackers on the market.
This document is a project report on the enhancement of a solar tracking system submitted in partial fulfillment of a Bachelor of Engineering degree. It includes an introduction outlining the project, a review of the project objectives, the evolution of solar trackers, and descriptions of the key system components and design considerations for the solar tracking system. The report covers types of solar trackers, the sun's apparent motion, specifications of the parts used, assembly techniques, working principles, programming, analysis, and conclusions. The project aims to develop an automatic solar tracking system to keep solar panels aligned with the sun to maximize energy production.
Development of Automatic PV Power Pack Servo Based Single Axis Solar Tracking...IOSR Journals
This document describes the development of an automatic single-axis solar tracking system using a servo motor mechanism. The system includes light dependent resistors (LDRs) to sense sunlight intensity, a microcontroller to send signals to the servo motor, and a mechanical structure to support the photovoltaic panel. The controller coding and servo mechanism were first simulated using PROTEUS 7 software. Then a prototype was developed including the mechanical structure, LDR sensors, microcontroller, servo motor, and battery. Testing showed the tracking system improved average efficiency by 7.67% compared to a fixed panel.
SOLAR ENERGY TRACKER SYSTEM SEMINAR REPORTeeeraviriet
The document discusses renewable energy sources and focuses on solar photovoltaic energy. It states that solar PV capacity has grown rapidly in recent decades and is expected to become a major energy source in the future. However, solar PV still needs to be improved to maximize output, especially in areas with less sunlight. The project aims to develop a prototype solar tracking system to more efficiently orient panels toward the sun and increase solar PV performance.
This document provides an introduction and overview of a student project to design an automatic single axis solar tracker using a microcontroller. The project aims to increase the power generated by a solar panel by keeping it perpendicular to the sun's rays as the sun moves across the sky. The system will use light dependent resistors and a comparator circuit to sense the sun's position and control a stepper motor to adjust the panel orientation accordingly. It outlines the components that will be used, including an AT89S51 microcontroller, light sensors, a comparator IC, stepper motor, and driver circuitry. It also includes diagrams of the overall system design and the power supply circuit.
7th sem final presentation solar tracking systemDebajyoti Chanda
This document presents a project on a solar tracking system developed by a group of students. It discusses how solar tracking can increase solar panel output by ensuring the panels always face the sun. It includes block diagrams of the system design using a microcontroller and sensors to control stepper motors and adjust the panel orientation. The document also discusses the concept design, Pro-E CAD model, design evaluation, and applications of the solar tracking system.
The document summarizes a 6-month internship project report on developing a solar tracking system. It provides background on the company where the internship was completed, Visesh Transmission Pvt. Ltd., an engineering company in Bangalore, India. It then describes the purpose and components of a solar tracking system, including photovoltaic panels, motors, microcontrollers, and actuators. The system works by using a microcontroller programmed with the sun's position over the year to orient the solar panels towards the sun for maximum efficiency. Solar tracking can increase energy output by 30% compared to fixed panels.
This document describes a project report submitted by four students for their Bachelor of Technology degree in Electrical Engineering. The report details the design and development of a dual axis solar tracker system. A dual axis solar tracker is able to track the sun's movement across both axes (east-west and north-south) to maximize solar panel exposure and increase energy generation by 35-45% compared to a fixed panel. The system is controlled using an Arduino UNO microcontroller and sensors to position the solar panel towards the strongest sunlight.
The Short and Long Term Peace Strategies: "Anglophone" Crisis, Cameroonijtsrd
Just like in Ethiopia, the unrest in the Republic of Cameroon is rooted in the countrys history, which dates back to many years. This paper seeks to analyze the institutional and attitudinal elements on the way forward for the restoration to normalcy of the state of affairs within the national territory. It is not a recipe for apportioning blames but of principles and options to a pacific settlement of disputes within the national territory. Maxwell N. Achu ""The Short and Long Term Peace Strategies: “Anglophone†Crisis, Cameroon"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23512.pdf
Paper URL: https://www.ijtsrd.com/humanities-and-the-arts/other/23512/the-short-and-long-term-peace-strategies-%C3%A2%E2%82%AC%C5%93anglophone-crisis-cameroon/maxwell-n-achu
This document provides information on solar tracking systems and photovoltaic panels. It discusses how solar tracking systems can increase the efficiency of photovoltaic panels by keeping them oriented towards the sun throughout the day. By maintaining an angle of incidence close to 0 degrees, solar tracking maximizes the amount of sunlight absorbed. This can boost the output of PV panels by 30-50% compared to fixed panels. The document also provides details on the components and functioning of solar tracking systems, including sensors, microcontrollers and motors. It examines how improvements in solar cell technology and solar tracking have increased the viability of solar power as a renewable energy source.
Making model of dual axis solar tracking with Maximum Power Point Trackingijsrd.com
Now a days solar harvesting is more popular. As the popularity become higher the material quality and solar tracking methods are more improved. There are several factors affecting the solar system. Major influence on solar cell, intensity of source radiation and storage techniques The materials used in solar cell manufacturing limit the efficiency of solar cell. This makes it particularly difficult to make considerable improvements in the performance of the cell, and hence restricts the efficiency of the overall collection process. Therefore, the most attainable maximum power point tracking method of improving the performance of solar power collection is to increase the mean intensity of radiation received from the source used. The purposed of tracking system controls elevation and orientation angles of solar panels such that the panels always maintain perpendicular to the sunlight. The measured variables of our automatic system were compared with those of a fixed angle PV system. As a result of the experiment, the voltage generated by the proposed tracking system has an overall of about 28.11% more than the fixed angle PV system. There are three major approaches for maximizing power extraction in medium and large scale systems. They are sun tracking, maximum power point (MPP) tracking or both.
Microcontroller based automatic solar power tracking systemIAEME Publication
The document summarizes a research paper on a microcontroller-based automatic solar power tracking system. The system aims to increase the efficiency of solar panels by keeping them aligned with the sun's position throughout the day. It uses a PIC18F452 microcontroller to control the movement of a stepper motor that adjusts the position of the solar panel from east to west. The system operates automatically based on a program loaded onto the microcontroller. It tracks the sun's movement precisely and provides higher power output compared to stationary solar panels.
Solar energy is rapidly gaining notoriety as an important means of expanding renewable energy
resources. As such, it is vital that those in engineering fields understand the technologies associated
with this area. Our project will include the design and construction of a microcontroller-based solar
panel tracking system. Solar tracking allows more energy to be produced because the solar array is
able to remain aligned to the sun. This system builds upon topics learned in this course. A working
system will ultimately be demonstrated to validate the design. Problems and possible improvements
will also be presented .Sustainable energy systems are necessary for the economic growth and a
healthy environment. To overcome the issues about lack of energy sources the use of renewable
energy resources needs to be enhanced manifold. The main purpose of this paper is to present a
control system which will cause better alignment of Photo voltaic (PV) array with sun light and to
harvest solar power. The proposed system changes its direction in two axis to trace the coordinate of
sunlight by detecting change in light intensity through light sensors. Hardware testing of the proposed
system is done for checking the system ability to track and follow the sunlight in an efficient way.
Dual axis solar tracking system superiority over single axis solar tracking and fixed PV system is also
presented.
Design and Construction of Automatic Dual-Axis Solar Tracking System Using Li...Mahfuza Mansura
Solar energy is most promising green energy resource.. This project was done to increase the power produced by solar PV Cells by developing a advance dual-axis solar tracking system.
A solar tracking system is proposed to maximize solar energy collection using a panel that tracks the sun from east to west automatically. The system uses an LDR light sensor to detect sunlight intensity and control a stepper motor driver to move the panel. It operates by sensing changes in light levels to keep the panel oriented towards the strongest sunlight throughout the day. A microcontroller is used to process sensor feedback and power the motor drive accordingly. The tracking system aims to continually point the panel towards the sun to obtain the highest solar intensity from morning to afternoon.
Two axis solar tracking system based on microcontrollerJagadeesh Yadav
The document describes a two-axis solar tracking system based on a microcontroller that uses light dependent resistors and differential signals from sensor pairs to control motors and position a solar panel to continuously face the sun for optimal energy collection. A PIC16F877 microcontroller receives input from four LDR sensors to calculate the angular error in both the azimuth and elevation plane and minimize the error by repositioning the panel. The system allows for increased solar collection over fixed panels and can operate independently based on location.
This document provides details about a dual axis solar tracker project submitted for a diploma in electrical engineering. It includes an acknowledgment, declaration, table of contents, and abstract summarizing the goal of developing a prototype solar tracking system to enhance the performance of photovoltaic modules. The working involves using light dependent resistors and a microcontroller to control servo motors that rotate the solar panel to maximize exposure to sunlight based on sensor inputs, with the aim of increasing overall power output.
This document describes the benefits of a dual axis solar tracker. It begins by providing background on solar energy production in India and the technologies of photovoltaics and concentrated solar power. It then discusses how single and dual axis solar trackers work, with dual axis trackers able to follow the sun's movement across the sky more precisely for about 40% greater energy production. The document outlines the circuit diagram and components used in the dual axis solar tracker, including Arduino, servo motors, light dependent resistors and charge controller. It concludes by discussing the financial benefits and future improvements possible with solar tracking technologies.
Design and Development of Reliable Solar Tracking System with Rotation and Ti...IRJET Journal
This document describes the design and development of a solar tracking system that allows for both rotation and tilt of solar panels. The system uses light dependent resistors (LDRs) to sense sunlight intensity and determine the sun's position. An Arduino microcontroller receives input from the LDRs and controls stepper motors to rotate the solar panel. A mechanical damper is also used to tilt the panel for maximum sunlight absorption. The tracking system aims to keep the solar panels perpendicular to the sun's rays throughout the day for improved energy collection efficiency compared to fixed panels.
Development of FPGA based Dual Axis Solar Tracking Systemdrboon
Field Programmable Gate Arrays (FPGAs) meet critical timing and performance requirements with parallel processing and real-time control application performance, allowing greater system integration and lower development cost. This paper describes a dual axis solar tracking system is based on astronomical equations. The position of sun at anytime is a function of azimuth and altitude angle values. Azimuth and altitude angle values are collected off line. The prototype of dual axis solar tracking system is developed on FPGA to implement the proposed idea. The system comprises of digital clock module, rise time module and two pulses generator modules. Pulse generator modules employ Pulse Width Modulation (PWM) technique for controlling two stepper motors for tracking the azimuth and altitude angles. The functionality of various blocks of the system is described in Very High Speed Integrated Circuit (VHSIC) Hardware Description Language (VHDL). The control logic has been successfully implemented on Spartan 3E FPGA device. Xilinx ISE 14.1 suit is used for design entry, synthesis and burning the bit stream file into FPGA device. The functional verification has been performed using Xilinx simulator.
Design and Implementation of Dual Axis Solar Tracking systemIJERA Editor
Solar energy is a promising technology that can have huge long term benefits. Solar cells convert the solar energy into electrical energy. Solar tracking system is the most suited technology to improve the efficiency and enhance the performance by utilizing maximum solar energy through the solar cell. In hardware development we utilize LDR’s as sensors and two servomotors to direct the position of the solar panel. The software part is implemented on a code written using an Arduino Uno controller.
Dual Axis Solar Tracker Using MicrocontrollerIRJET Journal
This document describes a dual axis solar tracker system that uses a microcontroller to rotate solar panels throughout the day to maximize solar energy collection. The system tracks the sun's movement across the sky by using a real-time clock and microcontroller to calculate the sun's position and send signals to a stepper motor to adjust the panel orientation accordingly. It aims to increase solar panel efficiency by more than 40% compared to fixed panels. The system was tested outdoors where it successfully tracked the sun and measurements found it increased hourly solar energy production.
This document discusses single axis solar tracking systems. It begins with an introduction that outlines the increasing demand for renewable energy and potential of solar energy. It then describes the concept of a single axis solar tracking system which uses a tilted solar panel mount and motor to move the panel relative to the sun's position. The document goes on to describe different types of single axis trackers and discuss sun-earth angles and how they vary throughout the year. It also includes calculations of incidence angles for different periods in Warangal, India. Finally, it discusses the future of solar tracking and double axis tracking systems.
Solar Tracking For Maximum Utilization Of Solar EnergyIRJET Journal
This document describes a solar tracking system that aims to maximize solar energy utilization by automatically adjusting the position of solar panels to always face the sun. It uses light dependent resistors (LDRs) and a DC motor controlled by a microcontroller to enable one-axis of horizontal tracking automatically and another axis of vertical tracking manually. By more accurately positioning the panels perpendicular to the sun's rays throughout the day, the system can increase energy collection efficiency compared to fixed panels. It discusses the hardware components, control logic, and concludes that such a low-cost tracking system has potential to increase renewable energy access in rural areas.
single axis solar tracker with out micro controllerNarendhar Kumar
This document is a project report for a solar tracker system developed by six students. It includes:
1) An introduction describing solar energy potential in India and motivation for the project.
2) Details of the solar tracker system components including a light sensor, motor driver, comparator, battery, and DC motor.
3) A circuit diagram and description of how the solar tracker functions to keep the solar panel oriented towards the sun using feedback from the light sensor.
4) Acknowledgements and future work sections noting the guidance received and potential to improve the system with a real-time clock.
In summary, the document presents a student project to develop a single-axis solar tracker using various electrical components
The significance of the solar energy is to intensify the effectiveness of the Solar Panel with the use of a primordial solar tracking system. Here we propounded a solar positioning system with the use of the global positioning system (GPS) , artificial neural network (ANN) and image processing (IP) . The azimuth angle of the sun is evaluated using GPS which provide latitude, date, longitude and time. The image processing used to find sun image through which centroid of sun is calculated and finally by comparing the centroid of sun with GPS quadrate to achieve optimum tracking point. Weather conditions and situation observed through AI decision making with the help of IP algorithms. The presented advance adaptation is analyzed and established via experimental effects which might be made available on the memory of the cloud carrier for systematization. The proposed system improve power gain by 59.21% and 10.32% compare to stable system (SS) and two-axis solar following system (TASF) respectively. The reduced tracking error of IoT based Two-axis solar following system (IoT-TASF) reduces their azimuth angle error by 0.20 degree.
IRJET- Comparative Analysis of Dual Axis Automated Solar Tracking SystemIRJET Journal
This document presents a comparative analysis of a dual axis automated solar tracking system. It begins with an introduction to solar energy and the benefits of increasing solar panel efficiency. It then describes the design and testing of a prototype dual axis solar tracker, which uses light dependent resistors and servo motors to orient solar panels perpendicular to the sun throughout the day. Experimental results show that the dual axis tracker increased average solar panel voltage by 8.61% compared to a stationary system. Therefore, solar tracking systems can significantly boost solar energy harvesting efficiency.
7th sem final presentation solar tracking systemDebajyoti Chanda
This document presents a project on a solar tracking system developed by a group of students. It discusses how solar tracking can increase solar panel output by ensuring the panels always face the sun. It includes block diagrams of the system design using a microcontroller and sensors to control stepper motors and adjust the panel orientation. The document also discusses the concept design, Pro-E CAD model, design evaluation, and applications of the solar tracking system.
The document summarizes a 6-month internship project report on developing a solar tracking system. It provides background on the company where the internship was completed, Visesh Transmission Pvt. Ltd., an engineering company in Bangalore, India. It then describes the purpose and components of a solar tracking system, including photovoltaic panels, motors, microcontrollers, and actuators. The system works by using a microcontroller programmed with the sun's position over the year to orient the solar panels towards the sun for maximum efficiency. Solar tracking can increase energy output by 30% compared to fixed panels.
This document describes a project report submitted by four students for their Bachelor of Technology degree in Electrical Engineering. The report details the design and development of a dual axis solar tracker system. A dual axis solar tracker is able to track the sun's movement across both axes (east-west and north-south) to maximize solar panel exposure and increase energy generation by 35-45% compared to a fixed panel. The system is controlled using an Arduino UNO microcontroller and sensors to position the solar panel towards the strongest sunlight.
The Short and Long Term Peace Strategies: "Anglophone" Crisis, Cameroonijtsrd
Just like in Ethiopia, the unrest in the Republic of Cameroon is rooted in the countrys history, which dates back to many years. This paper seeks to analyze the institutional and attitudinal elements on the way forward for the restoration to normalcy of the state of affairs within the national territory. It is not a recipe for apportioning blames but of principles and options to a pacific settlement of disputes within the national territory. Maxwell N. Achu ""The Short and Long Term Peace Strategies: “Anglophone†Crisis, Cameroon"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-3 , April 2019, URL: https://www.ijtsrd.com/papers/ijtsrd23512.pdf
Paper URL: https://www.ijtsrd.com/humanities-and-the-arts/other/23512/the-short-and-long-term-peace-strategies-%C3%A2%E2%82%AC%C5%93anglophone-crisis-cameroon/maxwell-n-achu
This document provides information on solar tracking systems and photovoltaic panels. It discusses how solar tracking systems can increase the efficiency of photovoltaic panels by keeping them oriented towards the sun throughout the day. By maintaining an angle of incidence close to 0 degrees, solar tracking maximizes the amount of sunlight absorbed. This can boost the output of PV panels by 30-50% compared to fixed panels. The document also provides details on the components and functioning of solar tracking systems, including sensors, microcontrollers and motors. It examines how improvements in solar cell technology and solar tracking have increased the viability of solar power as a renewable energy source.
Making model of dual axis solar tracking with Maximum Power Point Trackingijsrd.com
Now a days solar harvesting is more popular. As the popularity become higher the material quality and solar tracking methods are more improved. There are several factors affecting the solar system. Major influence on solar cell, intensity of source radiation and storage techniques The materials used in solar cell manufacturing limit the efficiency of solar cell. This makes it particularly difficult to make considerable improvements in the performance of the cell, and hence restricts the efficiency of the overall collection process. Therefore, the most attainable maximum power point tracking method of improving the performance of solar power collection is to increase the mean intensity of radiation received from the source used. The purposed of tracking system controls elevation and orientation angles of solar panels such that the panels always maintain perpendicular to the sunlight. The measured variables of our automatic system were compared with those of a fixed angle PV system. As a result of the experiment, the voltage generated by the proposed tracking system has an overall of about 28.11% more than the fixed angle PV system. There are three major approaches for maximizing power extraction in medium and large scale systems. They are sun tracking, maximum power point (MPP) tracking or both.
Microcontroller based automatic solar power tracking systemIAEME Publication
The document summarizes a research paper on a microcontroller-based automatic solar power tracking system. The system aims to increase the efficiency of solar panels by keeping them aligned with the sun's position throughout the day. It uses a PIC18F452 microcontroller to control the movement of a stepper motor that adjusts the position of the solar panel from east to west. The system operates automatically based on a program loaded onto the microcontroller. It tracks the sun's movement precisely and provides higher power output compared to stationary solar panels.
Solar energy is rapidly gaining notoriety as an important means of expanding renewable energy
resources. As such, it is vital that those in engineering fields understand the technologies associated
with this area. Our project will include the design and construction of a microcontroller-based solar
panel tracking system. Solar tracking allows more energy to be produced because the solar array is
able to remain aligned to the sun. This system builds upon topics learned in this course. A working
system will ultimately be demonstrated to validate the design. Problems and possible improvements
will also be presented .Sustainable energy systems are necessary for the economic growth and a
healthy environment. To overcome the issues about lack of energy sources the use of renewable
energy resources needs to be enhanced manifold. The main purpose of this paper is to present a
control system which will cause better alignment of Photo voltaic (PV) array with sun light and to
harvest solar power. The proposed system changes its direction in two axis to trace the coordinate of
sunlight by detecting change in light intensity through light sensors. Hardware testing of the proposed
system is done for checking the system ability to track and follow the sunlight in an efficient way.
Dual axis solar tracking system superiority over single axis solar tracking and fixed PV system is also
presented.
Design and Construction of Automatic Dual-Axis Solar Tracking System Using Li...Mahfuza Mansura
Solar energy is most promising green energy resource.. This project was done to increase the power produced by solar PV Cells by developing a advance dual-axis solar tracking system.
A solar tracking system is proposed to maximize solar energy collection using a panel that tracks the sun from east to west automatically. The system uses an LDR light sensor to detect sunlight intensity and control a stepper motor driver to move the panel. It operates by sensing changes in light levels to keep the panel oriented towards the strongest sunlight throughout the day. A microcontroller is used to process sensor feedback and power the motor drive accordingly. The tracking system aims to continually point the panel towards the sun to obtain the highest solar intensity from morning to afternoon.
Two axis solar tracking system based on microcontrollerJagadeesh Yadav
The document describes a two-axis solar tracking system based on a microcontroller that uses light dependent resistors and differential signals from sensor pairs to control motors and position a solar panel to continuously face the sun for optimal energy collection. A PIC16F877 microcontroller receives input from four LDR sensors to calculate the angular error in both the azimuth and elevation plane and minimize the error by repositioning the panel. The system allows for increased solar collection over fixed panels and can operate independently based on location.
This document provides details about a dual axis solar tracker project submitted for a diploma in electrical engineering. It includes an acknowledgment, declaration, table of contents, and abstract summarizing the goal of developing a prototype solar tracking system to enhance the performance of photovoltaic modules. The working involves using light dependent resistors and a microcontroller to control servo motors that rotate the solar panel to maximize exposure to sunlight based on sensor inputs, with the aim of increasing overall power output.
This document describes the benefits of a dual axis solar tracker. It begins by providing background on solar energy production in India and the technologies of photovoltaics and concentrated solar power. It then discusses how single and dual axis solar trackers work, with dual axis trackers able to follow the sun's movement across the sky more precisely for about 40% greater energy production. The document outlines the circuit diagram and components used in the dual axis solar tracker, including Arduino, servo motors, light dependent resistors and charge controller. It concludes by discussing the financial benefits and future improvements possible with solar tracking technologies.
Design and Development of Reliable Solar Tracking System with Rotation and Ti...IRJET Journal
This document describes the design and development of a solar tracking system that allows for both rotation and tilt of solar panels. The system uses light dependent resistors (LDRs) to sense sunlight intensity and determine the sun's position. An Arduino microcontroller receives input from the LDRs and controls stepper motors to rotate the solar panel. A mechanical damper is also used to tilt the panel for maximum sunlight absorption. The tracking system aims to keep the solar panels perpendicular to the sun's rays throughout the day for improved energy collection efficiency compared to fixed panels.
Development of FPGA based Dual Axis Solar Tracking Systemdrboon
Field Programmable Gate Arrays (FPGAs) meet critical timing and performance requirements with parallel processing and real-time control application performance, allowing greater system integration and lower development cost. This paper describes a dual axis solar tracking system is based on astronomical equations. The position of sun at anytime is a function of azimuth and altitude angle values. Azimuth and altitude angle values are collected off line. The prototype of dual axis solar tracking system is developed on FPGA to implement the proposed idea. The system comprises of digital clock module, rise time module and two pulses generator modules. Pulse generator modules employ Pulse Width Modulation (PWM) technique for controlling two stepper motors for tracking the azimuth and altitude angles. The functionality of various blocks of the system is described in Very High Speed Integrated Circuit (VHSIC) Hardware Description Language (VHDL). The control logic has been successfully implemented on Spartan 3E FPGA device. Xilinx ISE 14.1 suit is used for design entry, synthesis and burning the bit stream file into FPGA device. The functional verification has been performed using Xilinx simulator.
Design and Implementation of Dual Axis Solar Tracking systemIJERA Editor
Solar energy is a promising technology that can have huge long term benefits. Solar cells convert the solar energy into electrical energy. Solar tracking system is the most suited technology to improve the efficiency and enhance the performance by utilizing maximum solar energy through the solar cell. In hardware development we utilize LDR’s as sensors and two servomotors to direct the position of the solar panel. The software part is implemented on a code written using an Arduino Uno controller.
Dual Axis Solar Tracker Using MicrocontrollerIRJET Journal
This document describes a dual axis solar tracker system that uses a microcontroller to rotate solar panels throughout the day to maximize solar energy collection. The system tracks the sun's movement across the sky by using a real-time clock and microcontroller to calculate the sun's position and send signals to a stepper motor to adjust the panel orientation accordingly. It aims to increase solar panel efficiency by more than 40% compared to fixed panels. The system was tested outdoors where it successfully tracked the sun and measurements found it increased hourly solar energy production.
This document discusses single axis solar tracking systems. It begins with an introduction that outlines the increasing demand for renewable energy and potential of solar energy. It then describes the concept of a single axis solar tracking system which uses a tilted solar panel mount and motor to move the panel relative to the sun's position. The document goes on to describe different types of single axis trackers and discuss sun-earth angles and how they vary throughout the year. It also includes calculations of incidence angles for different periods in Warangal, India. Finally, it discusses the future of solar tracking and double axis tracking systems.
Solar Tracking For Maximum Utilization Of Solar EnergyIRJET Journal
This document describes a solar tracking system that aims to maximize solar energy utilization by automatically adjusting the position of solar panels to always face the sun. It uses light dependent resistors (LDRs) and a DC motor controlled by a microcontroller to enable one-axis of horizontal tracking automatically and another axis of vertical tracking manually. By more accurately positioning the panels perpendicular to the sun's rays throughout the day, the system can increase energy collection efficiency compared to fixed panels. It discusses the hardware components, control logic, and concludes that such a low-cost tracking system has potential to increase renewable energy access in rural areas.
single axis solar tracker with out micro controllerNarendhar Kumar
This document is a project report for a solar tracker system developed by six students. It includes:
1) An introduction describing solar energy potential in India and motivation for the project.
2) Details of the solar tracker system components including a light sensor, motor driver, comparator, battery, and DC motor.
3) A circuit diagram and description of how the solar tracker functions to keep the solar panel oriented towards the sun using feedback from the light sensor.
4) Acknowledgements and future work sections noting the guidance received and potential to improve the system with a real-time clock.
In summary, the document presents a student project to develop a single-axis solar tracker using various electrical components
The significance of the solar energy is to intensify the effectiveness of the Solar Panel with the use of a primordial solar tracking system. Here we propounded a solar positioning system with the use of the global positioning system (GPS) , artificial neural network (ANN) and image processing (IP) . The azimuth angle of the sun is evaluated using GPS which provide latitude, date, longitude and time. The image processing used to find sun image through which centroid of sun is calculated and finally by comparing the centroid of sun with GPS quadrate to achieve optimum tracking point. Weather conditions and situation observed through AI decision making with the help of IP algorithms. The presented advance adaptation is analyzed and established via experimental effects which might be made available on the memory of the cloud carrier for systematization. The proposed system improve power gain by 59.21% and 10.32% compare to stable system (SS) and two-axis solar following system (TASF) respectively. The reduced tracking error of IoT based Two-axis solar following system (IoT-TASF) reduces their azimuth angle error by 0.20 degree.
IRJET- Comparative Analysis of Dual Axis Automated Solar Tracking SystemIRJET Journal
This document presents a comparative analysis of a dual axis automated solar tracking system. It begins with an introduction to solar energy and the benefits of increasing solar panel efficiency. It then describes the design and testing of a prototype dual axis solar tracker, which uses light dependent resistors and servo motors to orient solar panels perpendicular to the sun throughout the day. Experimental results show that the dual axis tracker increased average solar panel voltage by 8.61% compared to a stationary system. Therefore, solar tracking systems can significantly boost solar energy harvesting efficiency.
Dual Axis Solar Tracking System with Weather Sensorijtsrd
Energy crisis is one in every of the major problems in world developing countries like Republic of India. Theres a huge gap between generation and demand of current. Nearly half of the population of the country cannot get the power supply. Renewable energy is one of the answers to solve this issue. Solar power is one in every of the foremost effective resources of the renewable energy that might play a big role to resolve this drawback. This analysis presents a performance analysis of the dual axis solar tracking system using Arduino and led and servo motors. The most objective of this research is whether the solar tracker is better than a solar panel. This work is split into 2 light dependent resistors LDR is employed to observe the almost source of illumination from the sun. Two servo motors put together accustomed move the electrical device to most source of illumination location perceived by the LDRs. In the other half, the software part is written by using C programming language which head towards to the Arduino UNO controller. The result of the solar tracking system has analyzed and compared with the mounted or static solar panel found higher performance in terms of current, power and voltage. Therefore, the solar tracking system is evidenced additional sensible for capturing the most daylight provide for star gathering applications. The result showed dual axis solar tracking system made further 10.53 watt power compared with mounted fixed and single axis solar tracking system. Components hardware and computer code. Mrs. Surbhi R. Shroff "Dual Axis Solar Tracking System with Weather Sensor" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-7 | Issue-3 , June 2023, URL: https://www.ijtsrd.com.com/papers/ijtsrd57378.pdf Paper URL: https://www.ijtsrd.com.com/engineering/electrical-engineering/57378/dual-axis-solar-tracking-system-with-weather-sensor/mrs-surbhi-r-shroff
An Efficient Microcontroller Based Sun Tracker Control for Solar Cell SystemsIJECEIAES
The solar energy is fast becoming a different means of electricity resource. Now in world Fossil fuels are seriously depleting thus the need for another energy source is a necessity. To create effective utilization of its solar, energy efficiency must be maximized. An attainable way to deal with amplifying the power output of sun-powered exhibit is by sun tracking. This paper presents the control system for a solar cell orientation device which follows the sun in real time during daytime.
This study investigates experimentally the performance of two-dimensional solar tracking systems with reflector using commercial silicon based photovoltaic module, with open and closed loop control systems. Different reflector materials were also investigated. The experiments were performed at the Hashemite University campus in Zarqa at a latitude of 32⁰, in February and March. Photovoltaic output power and performance were analyzed. It was found that the modified photovoltaic module with mirror reflector generated the highest value of power, while the temperature reached a maximum value of 53 ̊ C. The modified module suggested in this study produced 5% more PV power than the two-dimensional solar tracking systems without reflector and produced 12.5% more PV power than the fixed PV module with 26⁰ tilt angle.
Optimization of photovoltaic energy by a microcontroller saad motahhir
One of the major challenges of all nations today is to find new energy sources to meet the needs for continued growth in Energy Term. The conversion of sunlight into electricity via photovoltaic solar cells is becoming a necessity in particular through the observation of a global evolution in clean energy that respects the environment. The main challenge is to optimize as much as possible the cost / energy ($/watt) ratio thus boosting both energy performance and at the same time take full advantage of the sun's rays throughout the day.In this context the sun trackers are such devices for efficiency improvement.
Fabrication and Performance Analysis of Solar Tracking System by Using By-Pas...IJMREMJournal
Energy is a burning issue that almost every person experience now a days. Energy demand increases exponentially
since a decade. Due to the global warming and it’s threatening impacts on human life. Therefore, to overcome
such disastrous impacts on the planet, renewable energy resources play vital role now a days. Solar energy is one
of the vastest available renewable energy resources around the globe, but the main issue is its poor efficiency.
Pakistan is facing energy shortage that can be compensated through solar power and the need is to design a project
that maximizes its efficiency. So, the research is mainly focused on improving efficiency of solar panels against
shading loss by using different techniques. In this research, different results will be obtained and compared with
different techniques which are LDR based solar tracking system, by-pass diodes technology and super capacitors.
Fabrication of solar tracker is based on Microcontroller that drives L298N driver to operate stepper motor.
An investigation of an Arduino-based solar tracking system with panel surface...IRJET Journal
This document describes a study investigating an Arduino-based solar tracking system with an integrated panel cleaning mechanism. The system uses light dependent resistors to sense sunlight intensity and direct a servo motor to adjust the solar panel orientation to maximize energy capture from the sun throughout the day. It also includes motorized wipers to periodically clean the panel surface. The findings indicate that the solar tracking panel produces more energy than a stationary panel and that keeping the panel surface clean further enhances energy production. The system aims to improve solar energy efficiency.
This document describes the development of an automatic single-axis solar tracking system using a servo motor mechanism. The system includes light dependent resistors (LDRs) to sense sunlight intensity, a microcontroller to send signals to the servo motor, and a mechanical structure to support the photovoltaic panel. The controller coding and servo mechanism were first simulated using PROTEUS 7 software. Then a prototype was developed including the mechanical design, active control components like the LDRs, microcontroller and servo motor, and a power system. Testing showed the tracking system improved average efficiency by 7.67% compared to a fixed panel.
The document describes a solar tracking system that uses LDR sensors and a microcontroller to optimize the power output of solar panels. It discusses how single-axis and dual-axis trackers work to keep the panels oriented towards the sun throughout the day. Experimental results showed that a dual-axis active tracker increased power output compared to fixed panels, while a passive tracker using reflectors performed nearly as well at lower cost. The system aims to maximize solar energy collection with a low-cost design.
This document describes an automatic solar tracker system that uses dual-axis tracking to maximize solar panel efficiency. It uses four photodiode sensors and motors to continuously adjust the panel's position based on the sun's location. The system aims to improve energy output by keeping the panels perpendicular to the sun's rays throughout the day. It consists of a two-axis structure to rotate the panels vertically and horizontally. A microcontroller processes input from the sensors to control the motors accordingly. The authors conclude that such a tracking system can increase solar panel efficiency by 30-40% compared to stationary panels.
Microcontroller Based Solar tracking System for enhancing efficiency of a Pho...IJERA Editor
In today‟s scenario of increasing energy needs, there is a huge dependence on renewable energy sources along
with the conventional sources. One of the most important renewable energy resources is the sun. However, the
problem with solar power is that it is directly dependent on light intensity. To produce the maximum amount of
energy, a solar panel must be perpendicular to the light source. Because the sun moves both throughout the day
as well as throughout a year, a solar panel must be able to follow the sun‟s movement to produce the maximum
possible power. There are a large number of methods available for solar tracking and hence maximizing the
output .This paper proposes an Arduino Uno microcontroller board based solar tracking system. As compared to
the conventional solar panels, the one mounted with microcontroller based tracking system will give enhanced
output.
Report on the IMPROVING THE EFFICIENCY OF SOLAR PHOTOVOLTAIC POWER GENERATION...Yuvraj Singh
The document discusses various ways to improve the efficiency of solar photovoltaic power generation. It outlines how improving the conversion efficiency of solar cells, implementing solar tracking systems, utilizing maximum power point tracking technology, and researching new types of solar cells can enhance efficiency. Critical components of grid-tied solar inverter systems are also investigated to efficiently operate solar power systems. The goal is to identify areas for improving solar cell efficiency beyond the typical 10-20% range through techniques like optimizing light absorption and reducing parasitic resistance losses.
Development of a Smart Mechatronic Tracking System to Enhance Solar Cell Pan...IJMER
Two degree of freedom Mechatronic solar tracking system was developed in the present study
to improve the performance of photovoltaic cell panels. The present tracking control algorithm was
applied on a small prototype, simulating a solar cells panel tracking system, designed and constructed in
this work. The Mechatronic tracking hardware section consists mainly of a commercial arduino micro-controller with built in, two servo motor drivers, data input/output, and micro processor modules. Other
components of the tracking hardware are, servo motors actuators and four LDR light intensity sensors. A
feedback control soft ware program, designed and constructed in the present work, enables the solar
tracker to automatically compensate for the sun location’s change to enhance the PV cells efficiency. The
LDR sensors are employed to continuously detect the sun rays intensity at four, light exposed isolated
positions, representing up-right, up-left, down-right, and down-left sides of the solar panel. LDRs data is
hence sent to the control software. The data is used to decide proper actuation actions and send them to
the servomotors to redirect the PV cells panel perpendicular to incident sun rays. Sensors and actuation
signals are exchanged via the in/out data module of the Arduino package. Results of the present
experimental work show that using the present tracking system increases the PV cell out power by about
38% compared with that of a fixed collector
This project aims to develop dual axis solar tracker with IOT monitoring system using Arduino. Generally, solar energy is the technology to get useful energy from sunlight. Solar energy has been used in many traditional technologies over the centuries and has been widely used in the absence of other energy supplies. Its usefulness is widespread when awareness of the cost of the environment and the supply is limited by other energy sources such as fuel. The solar tracking system is the most effective technology to improve the efficiency of solar panels by tracking and following the sun's movement. With the help of this system, solar panels can improve the way of sunlight detection so that more electricity can be collected as solar panels can maintain a sunny position. Thus the project discusses the development of two-axis solar-tracking developers using Arduino Uno as main controller the system. For develops this project, four light-dependent resistors (LDRs) have been used for sunlight detection and a maximum light intensity. Two servo motors have been used to rotate the solar panel according to the sun's light source detected by the LDR. Next a WIFI ESP8266 device is used as an intermediary between device and IOT monitoring system. The IOT monitoring system is a website that functions to store data. The efficiency of this system has been tested and compared with a single axial solar tracker. As a result, the two-axis solar tracking system generates more power, voltage and current.
IRJET - Two Axis with Four Sensors Solar Tracking SystemIRJET Journal
This document describes a two-axis solar tracking system with four light dependent resistor (LDR) sensors. The system uses an Arduino UNO microcontroller to control two DC motors that adjust the position of a solar panel based on input from the four LDR sensors. The LDR sensors detect light intensity and send signals to the Arduino to rotate the solar panel and ensure it remains perpendicular to the sun's rays for maximum energy absorption. Experimental results showed the dual-axis tracking system increased solar panel efficiency by up to 40% compared to a fixed solar panel system. The low-cost system provides an automatic way to track the sun's movement and improve renewable energy harvesting.
Design and Simulation of Grid Connected Solar Photovoltaic Plant for Munnar, ...IRJET Journal
This document describes a proposed 100kW solar photovoltaic system designed to electrify 48 homes in a tribal village in Munnar, India. The system would be grid-connected to reduce reliance on fossil fuels and connect remote areas. Key aspects of the design include:
- Selection of Munnar as the site due to suitable solar radiation levels and need to electrify remote tribal villages.
- Use of PVsyst software to simulate the system using meteorological data for Munnar.
- Design of the 100kW system including selection of polycrystalline solar panels and 30kW grid-tied inverters.
- Simulation results showing the system would generate 142.3MWh per
Solar Photovoltaic Systems – Applications & ConfigurationsIRJET Journal
This document discusses solar photovoltaic (PV) systems, their applications, and configurations. It begins by explaining how PV cells work by converting sunlight directly into electricity through the photovoltaic effect. It then outlines several common applications of PV systems including water pumping, cooking, heating, lighting, traffic signals, cold storage, and use in space. The document also describes different configurations for PV systems including stand-alone systems with and without battery storage, grid-interactive systems, hybrid systems combining PV with other energy sources, and building integrated PV systems. It concludes by emphasizing the benefits of PV systems in reducing emissions and fuel use while contributing to a more sustainable energy future.
Similar to Design and implementation of an automatically aligned solar tracking system (20)
The aim of this research is the speed tracking of the permanent magnet synchronous motor (PMSM) using an intelligent Neural-Network based adapative backstepping control. First, the model of PMSM in the Park synchronous frame is derived. Then, the PMSM speed regulation is investigated using the classical method utilizing the field oriented control theory. Thereafter, a robust nonlinear controller employing an adaptive backstepping strategy is investigated in order to achieve a good performance tracking objective under motor parameters changing and external load torque application. In the final step, a neural network estimator is integrated with the adaptive controller to estimate the motor parameters values and the load disturbance value for enhancing the effectiveness of the adaptive backstepping controller. The robsutness of the presented control algorithm is demonstrated using simulation tests. The obtained results clearly demonstrate that the presented NN-adaptive control algorithm can provide good trackingperformances for the speed trackingin the presence of motor parameter variation and load application.
The document presents a new method for fault classification and direction discrimination in transmission lines using 1D convolutional neural networks (1D-CNNs). A 132kV transmission line model is simulated to generate training and testing data for the 1D-CNN algorithm. The proposed 1D-CNN approach directly uses the voltage and current signals from one end as input, merging feature extraction and classification into a single learning process. Testing shows the 1D-CNN method accurately classifies and discriminates fault direction with higher accuracy than conventional neural network and fuzzy neural network methods under different fault conditions.
Among the most widespread renewable energy sources is solar energy; Solar panels offer a green, clean, and environmentally friendly source of energy. In the presence of several advantages of the use of photovoltaic systems, the random operation of the photovoltaic generator presents a great challenge, in the presence of a critical load. Among the most used solutions to overcome this problem is the combination of solar panels with generators or with the public grid or both. In this paper, an energy management strategy is proposed with a safety aspect by using artificial neural networks (ANNs), in order to ensure a continuous supply of electricity to consumers with a maximum solicitation of renewable energy.
In this paper, the artificial neural network (ANN) has been utilized for rotating machinery faults detection and classification. First, experiments were performed to measure the lateral vibration signals of laboratory test rigs for rotor-disk-blade when the blades are defective. A rotor-disk-blade system with 6 regular blades and 5 blades with various defects was constructed. Second, the ANN was applied to classify the different x- and y-axis lateral vibrations due to different blade faults. The results based on training and testing with different data samples of the fault types indicate that the ANN is robust and can effectively identify and distinguish different blade faults caused by lateral vibrations in a rotor. As compared to the literature, the present paper presents a novel work of identifying and classifying various rotating blade faults commonly encountered in rotating machines using ANN. Experimental data of lateral vibrations of the rotor-disk-blade system in both x- and y-directions are used for the training and testing of the network.
This paper focuses on the artificial bee colony (ABC) algorithm, which is a nonlinear optimization problem. is proposed to find the optimal power flow (OPF). To solve this problem, we will apply the ABC algorithm to a power system incorporating wind power. The proposed approach is applied on a standard IEEE-30 system with wind farms located on different buses and with different penetration levels to show the impact of wind farms on the system in order to obtain the optimal settings of control variables of the OPF problem. Based on technical results obtained, the ABC algorithm is shown to achieve a lower cost and losses than the other methods applied, while incorporating wind power into the system, high performance would be gained.
Kosovo has limited renewable energy resources and its power generation sector is based on fossil fuels. Such a situation emphasizes the importance of active research and efficient use of renewable energy potential. According to the analysis of meteorological data for Kosovo, it can be concluded that among the most attractive potential wind power sites are the locations known as Kitka (42° 29' 41" N and 21° 36' 45" E) and Koznica (42° 39′ 32″ N, 21° 22′30″E). The two terrains in which the analysis was carried out are mountain areas, with altitudes of 1142 m (Kitka) and 1230 m (Koznica). the same measuring height, about 84 m above the ground, is obtained for these average wind speeds: Kitka 6,667 m/s and Koznica 6,16 m/s. Since the difference in wind speed is quite large versus a difference in altitude that is not being very large, analyses are made regarding the terrain characteristics including the terrain relief features. In this paper it will be studied how much the roughness of the terrain influences the output energy. Also, that the assumption to be taken the same as to how much they will affect the annual energy produced.
The document summarizes a research paper that proposes using a battery energy storage system (BESS) with droop control to reduce frequency fluctuations in a multi-machine power system connected to a large-scale photovoltaic (PV) plant. The paper develops a droop control strategy for the BESS that incorporates a frequency error signal and dead-band. Simulation results using PSCAD/EMTDC software show that the proposed droop control-based BESS can efficiently curtail frequency oscillations caused by fluctuations in PV power injection due to changing solar irradiance.
This paper focuses on the modeling and control of a wind energy conversion chain using a permanent magnet synchronous machine. This system behaves a turbine, a generator, DC/DC and DC/AC power converters. These are connected on both sides to the DC bus, where the inverter is followed by a filter which is connected to the grid. In this paper, we have been used two types of controllers. For the stator side converter, we consider the Takagi-Sugeno approach where the parameters of controller have been computed by the theory of linear matrix inequalities. The stability synthesis has been checked using the Lyapunov theory. According to the grid side converter, the proportional integral controller is exploited to keep a constant voltage on the DC bus and control both types of powers. The simulation results demonstrate the robustness of the approach used.
The development of modeling wind speed plays a very important in helping to obtain the actual wind speed data for the benefit of the power plant planning in the future. The wind speed in this paper is obtained from a PCE-FWS 20 type measuring instrument with a duration of 30 minutes which is accumulated into monthly data for one year (2019). Despite the many wind speed modeling that has been done by researchers. Modeling wind speeds proposed in this study were obtained from the modified Rayleigh distribution. In this study, the Rayleigh scale factor (Cr) and modified Rayleigh scale factor (Cm) were calculated. The observed wind speed is compared with the predicted wind characteristics. The data fit test used correlation coefficient (R2), root means square error (RMSE), and mean absolute percentage error (MAPE). The results of the proposed modified Rayleigh model provide very good results for users.
This paper deals with an advanced design for a pump powered by solar energyto supply agricultural lands with water and also the maximum power point is used to extract the maximum value of the energy available inside the solar panels and comparing between techniques MPPT such as Incremental conductance, perturb & observe, fractional short current circuit, and fractional open voltage circuit to find the best technique among these. The solar system is designed with main parts: photovoltaic (PV) panel, direct current/direct current (DC/DC) converter, inverter, filter, and in addition, the battery is used to save energy in the event that there is an increased demand for energy and not to provide solar radiation, as well as saving energy in the case of generation more than demand. This work was done using the matrix laboratory (MATLAB) simulink program.
The objective of this paper is to provide an overview of the current state of renewable energy resources in Bangladesh, as well as to examine various forms of renewable energies in order to gain a comprehensive understanding of how to address Bangladesh's power crisis issues in a sustainable manner. Electricity is currently the most useful kind of energy in Bangladesh. It has a substantial influence on a country's socioeconomic standing and living standards. Maintaining a stable source of energy at a cost that is affordable to everyone has been a constant battle for decades. Bangladesh is blessed with a wealth of natural resources. Bangladesh has a huge opportunity to accelerate its economic development while increasing energy access, livelihoods, and health for millions of people in a sustainable way due to the renewable energy system.
When the irradiance distribution over the photovoltaic panels is uniform, the pursuit of the maximum power point is not reached, which has allowed several researchers to use traditional MPPT techniques to solve this problem Among these techniques a PSO algorithm is used to have the maximum global power point (GMPPT) under partial shading. On the other hand, this one is not reliable vis-à-vis the pursuit of the MPPT. Therefore, in this paper we have treated another technique based on a new modified PSO algorithm so that the power can reach its maximum point. The PSO algorithm is based on the heuristic method which guarantees not only the obtaining of MPPT but also the simplicity of control and less expensive of the system. The results are obtained using MATLAB show that the proposed modified PSO algorithm performs better than conventional PSO and is robust to different partial shading models.
A stable operation of wind turbines connected to the grid is an essential requirement to ensure the reliability and stability of the power system. To achieve such operational objective, installing static synchronous compensator static synchronous compensator (STATCOM) as a main compensation device guarantees the voltage stability enhancement of the wind farm connected to distribution network at different operating scenarios. STATCOM either supplies or absorbs reactive power in order to ensure the voltage profile within the standard-margins and to avoid turbine tripping, accordingly. This paper present new study that investigates the most suitable-location to install STATCOM in a distribution system connected wind farm to maintain the voltage-levels within the stability margins. For a large-scale squirrel cage induction generator squirrel-cage induction generator (SCIG-based) wind turbine system, the impact of STATCOM installation was tested in different places and voltage-levels in the distribution system. The proposed method effectiveness in enhancing the voltage profile and balancing the reactive power is validated, the results were repeated for different scenarios of expected contingencies. The voltage profile, power flow, and reactive power balance of the distribution system are observed using MATLAB/Simulink software.
The electrical and environmental parameters of polymer solar cells (PSC) provide important information on their performance. In the present article we study the influence of temperature on the voltage-current (I-V) characteristic at different temperatures from 10 °C to 90 °C, and important parameters like bandgap energy Eg, and the energy conversion efficiency η. The one-diode electrical model, normally used for semiconductor cells, has been tested and validated for the polemeral junction. The PSC used in our study are formed by the poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM). Our technique is based on the combination of two steps; the first use the Least Mean Squares (LMS) method while the second use the Newton-Raphson algorithm. The found results are compared to other recently published works, they show that the developed approach is very accurate. This precision is proved by the minimal values of statistical errors (RMSE) and the good agreement between both the experimental data and the I-V simulated curves. The obtained results show a clear and a monotonic dependence of the cell efficiency on the studied parameters.
The inverter is the principal part of the photovoltaic (PV) systems that assures the direct current/alternating current (DC/AC) conversion (PV array is connected directly to an inverter that converts the DC energy produced by the PV array into AC energy that is directly connected to the electric utility). In this paper, we present a simple method for detecting faults that occurred during the operation of the inverter. These types of faults or faults affect the efficiency and cost-effectiveness of the photovoltaic system, especially the inverter, which is the main component responsible for the conversion. Hence, we have shown first the faults obtained in the case of the short circuit. Second, the open circuit failure is studied. The results demonstrate the efficacy of the proposed method. Good monitoring and detection of faults in the inverter can increase the system's reliability and decrease the undesirable faults that appeared in the PV system. The system behavior is tested under variable parameters and conditions using MATLAB/Simulink.
The document describes a proposed modified bridge-type nonsuperconducting fault current limiter (NSFCL) for distribution networks. The NSFCL consists of a bridge rectifier, two DC reactors (one small in series and one large in parallel), and an IGBT semiconductor switch controlled by a command circuit. During normal operation, the IGBT is on and the parallel reactor is bypassed, making the NSFCL invisible. During a fault, the IGBT turns off, inserting the parallel reactor to limit fault current. Simulation results showed the design effectively limits fault current while minimally affecting normal operation.
This paper provides a new approach to reducing high-order harmonics in 400 Hz inverter using a three-level neutral-point clamped (NPC) converter. A voltage control loop using the harmonic compensation combined with NPC clamping diode control technology. The capacitor voltage imbalance also causes harmonics in the output voltage. For 400 Hz inverter, maintain a balanced voltage between the two input (direct current) (DC) capacitors is difficult because the pulse width modulation (PWM) modulation frequency ratio is low compared to the frequency of the output voltage. A method of determining the current flowing into the capacitor to control the voltage on the two balanced capacitors to ensure fast response reversal is also given in this paper. The combination of a high-harmonic resonator controller and a neutral-point voltage controller working together on the 400 Hz NPC inverter structure is given in this paper.
Direct current (DC) electronic load is a useful equipment for testing the electrical system. It can emulate various load at a high rating. The electronic load requires a power converter to operate and a linear regulator is a common option. Nonetheless, it is hard to control due to the temperature variation. This paper proposed a DC electronic load using the boost converter. The proposed electronic load operates in the continuous current mode and control using the integral controller. The electronic load using the boost converter is compared with the electronic load using the linear regulator. The results show that the boost converter able to operate as an electronic load with an error lower than 0.5% and response time lower than 13 ms.
This paper presents a new simplified cascade multiphase DC-DC buck power converter suitable for low voltage and large current applications. Cascade connection enables very low voltage ratio without using very small duty cycles nor transformers. Large current with very low ripple content is achieved by using the multiphase technique. The proposed converter needs smaller number of components compared to conventional cascade multiphase DC-DC buck power converters. This paper also presents useful analysis of the proposed DC-DC buck power converter with a method to optimize the phase and cascade number. Simulation and experimental results are included to verify the basic performance of the proposed DC-DC buck power converter.
A new bidirectional multilevel inverter topology with a high number of voltage levels with a very reduced number of power components is proposed in this paper. Only TEN power switches and four asymmetric DC voltage sources are used to generate 25 voltage levels in this new topology. The proposed multilevel converter is more suitable for e-mobility and photovoltaic applications where the overall energy source can be composed of a few units/associations of several basic source modules. Several benefits are provided by this new topology: Highly sinusoidal current and voltage waveforms, low Total Harmonic Distortion, very low switching losses, and minimum cost and size of the device. For optimum control of this 25-level voltage inverter, a special Modified Hybrid Modulation technique is performed. The proposed 25-level inverter is compared to various topologies published recently in terms of cost, the number of active power switches, clamped diodes, flying capacitors, DC floating capacitors, and the number of DC voltage sources. This comparison clearly shows that the proposed topology is cost-effective, compact, and very efficient. The effectiveness and the good performance of the proposed multilevel power converter (with and without PWM control) are verified and checked by computational simulations.
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metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
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Understanding Inductive Bias in Machine LearningSUTEJAS
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The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
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Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
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CHINA’S GEO-ECONOMIC OUTREACH IN CENTRAL ASIAN COUNTRIES AND FUTURE PROSPECTjpsjournal1
The rivalry between prominent international actors for dominance over Central Asia's hydrocarbon
reserves and the ancient silk trade route, along with China's diplomatic endeavours in the area, has been
referred to as the "New Great Game." This research centres on the power struggle, considering
geopolitical, geostrategic, and geoeconomic variables. Topics including trade, political hegemony, oil
politics, and conventional and nontraditional security are all explored and explained by the researcher.
Using Mackinder's Heartland, Spykman Rimland, and Hegemonic Stability theories, examines China's role
in Central Asia. This study adheres to the empirical epistemological method and has taken care of
objectivity. This study analyze primary and secondary research documents critically to elaborate role of
china’s geo economic outreach in central Asian countries and its future prospect. China is thriving in trade,
pipeline politics, and winning states, according to this study, thanks to important instruments like the
Shanghai Cooperation Organisation and the Belt and Road Economic Initiative. According to this study,
China is seeing significant success in commerce, pipeline politics, and gaining influence on other
governments. This success may be attributed to the effective utilisation of key tools such as the Shanghai
Cooperation Organisation and the Belt and Road Economic Initiative.
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varies along with the daily movement and position of the sun at different seasons, the solar tracking system
orients the PV solar panels toward the sun to maximize the amount of solar radiation directed at these panels.
Many types of solar trackers with varying costs, development stages, and performance are being
used today. The accuracy requirements of these trackers greatly depend on their application. For instance,
concentrators require a high degree of accuracy especially in PV applications to ensure that the concentrated
sunlight is precisely directed toward the powered device that is located at the focal point (or near) of
the reflector. Given that concentrators typically do not work without tracking, using at least a single-axis
tracking is mandatory.
A solar electric panel comprises many PV cells that are wired together in a series to achieve
the desired voltage as shown in Figure 1. The thin wires in front of the PV panel pick up the free electrons.
Figure 1. Multi-crystalline PV panel
A PV cell generates electric energy from solar energy. The absorbed light is made of photons with
frequency-dependent energies. The energy of these photons excites the electrons in a p–n semiconductor
material to higher energy levels and to transform them into free-electrons. This behavior is known as
the photoelectric effect, in which an electric current is produced when the p–n junction is exposed to light as
shown in Figure 2. The intensity of the generated current reaches its maximum at midday when the solar
radiation level is at its peak. However, given that only a minimum level of solar radiation is observed at both
extremes of a day, the produced current is not always constant and greatly depends on the radiation level.
As the intensity of the sunlight falling on the PV cell increases, a higher electrical current is produced [8].
Figure 2. PV cell structure [8]
2. SOLAR TRACKER FUNDAMENTALS
A solar tracker is a device that aligns a single PV panel or an array of panels with the sun.
The implementation of solar trackers can dramatically improve the power output of a system by keeping
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the sun in focus throughout the day. A well-designed tracker needs less PV panels due to its increased
efficiency, thereby reducing the initial implementation costs.
Solar drive trackers can be divided into three types depending on the type of drive and sensing or
positioning system:
1. Passive trackers use solar radiation to heat gases that move the tracker across the sky [9].
2. Active trackers use electric or hydraulic drives and some types of gearings or actuators to move
the tracker [10].
3. Open loop trackers determine the position of the sun by using computer-controlled algorithms or
simple timing systems [11].
Many types of solar trackers can also be grouped into single- and double-axes trackers. On the one
hand, single-axis solar trackers follow the sun automatically from east to west by using horizontal or vertical
axles [12]. A horizontal axle is used in areas with short periods of daytime and high temperatures at noon,
such as in tropical regions, while a vertical axle is used in areas with long periods of daytime (especially
during summer) but with not too high temperatures, such as in high latitude regions. Meanwhile, Double-axis
solar trackers, also known as dual-axis trackers, follow the sun from east to west and from north to south by
using horizontal and vertical axles [13-15]. This tracker produces an output power of 40% greater than that
produced by single-axis solar trackers [5].
3. MECHANICAL SYSTEM
A frame-holder for the tracking system with a special alignment was designed to position the array
and motors of the PV as shown in Figure 3, thereby allowing to increase accuracy by increasing sun radiation
that reach normally to the PV and providing the system with some freedom in its movement to overcome the
problems associated with the tilt of the frame-holder. This mechanical system comprises two DC motors,
a warm gear, four photo-sensors, and two limit switches.
The first motor controls the azimuth of the PV’s array in one plane, while the second motor is
the DC linear actuator motor as shown in Figure 4. This motor was selected because of its simple control,
high reliability, and its gear box, which converts rotational motion into linear motion by using an arm that
lifts the frame up and down as appropriate to change the location of the sun from north to south throughout
the year. Linear actuators can have a static loading capacity, which means that when the motor stops, these
actuators are locked in place and can support either pulling or pushing load. The braking force of the linear
actuator varies along with the angular pitch of the screw threads and the specific design of the threads.
Figure 3. Proposed design of the sun-tracking
alignment system
Figure 4. DC linear actuator
The motors need to rotate less than 5° in order for the system to face the sun and receive
the maximum amount of sunlight. To achieve this goal, a worm gear was used to ensure a proper movement
and location for the frame as shown in Figure 5.
The final design of the gearing system is shown in Figure 6. A small cog was attached to the shaft of
the DC motor, which in turn was linked as an arc to a larger cog that is attached to the sensor plane of
movement. This gearing system effectively reduced the speed of frame, thereby accurately positioning
the PV’s array.
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Figure 5. Worm gear Figure 6. Motor gearing system
Given that the system is tracking the sun, an effective sensor design was developed while
considering the position and type of sensors. The sensor design of the tilted mount can effectively locate
the position of the sun. This design incorporates a triangle structure with a photo-sensor mounted on each
side as shown in Figure 7. Photo-sensors have a variable resistance that changes along with the intensity of
light that falls upon them, thereby allowing these equipment to be used in light-sensing circuits. The photo-
sensors are positioned orthogonally to the opposing sensor to ensure that they will have the same voltage
readings when the triangle points directly at the sun. The sensors are set at 45° as shown in Figure 7, where θ
is the angle of incidence and β is the tilted angle. When the triangle is not pointing directly at the sun,
the voltage increases on the side (s) that is the most exposed to the sun. This approach allows us to compare
these opposing sets of sensors and control the movement direction of the solar tracker.
Figure 7. Tilted mount
Light sensors are among the most common types of sensors. The simplest type of photo-sensor may
be a cadmium sulfide (CdS)-type photoresistor. CdS photo-sensors are passive components which resistance
is inversely proportional to the amount of light intensity directed toward them.
To further guarantee the safety of the system, two limit switches were used as shown in Figure 8.
When one of these switches is actuated, the motor stops working and moves back to the position the switch is
not actuated again. This mean the round is finished, and the frame holder should moves in different direction.
Figure 8. Limit switch design
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4. CONTROLLER AND ELECTRONIC SYSTEM
The proposed tracking system was implemented by using a PIC 16F877A microcontroller. The main
functions of this controller are to convert the analog voltages from the photo-sensors into digital values that
can be compared and to control the DC motors through the H-Bridge [16]. The code for the PIC
microcontroller system was developed by using the Flowcode language given its high flexibility and small
code size, which can shorten the development and debugging times as well as improve the efficiency.
The H-Bridge used for the motor driver is L298 [17], an integrated circuit that has a dual full-bridge
driver designed to drive inductive loads, such as relays, solenoids, and DC motors. By using this solar
tracker, a closed-loop solar tracking system that comprises electrical and mechanical systems was developed.
The overall block diagram of the proposed system is shown in Figure 9. As can be seen in this block diagram,
the power supply provides voltages of 12V and 5V, the system has four photo-sensors that provide feedback
to the microcontroller, the microcontroller processes the sensor input and provides output to the H-Bridges,
the H-bridges controls the rotation directions of the DC motors or linear actuators whether forward or
reverse, and the motor moves the gear as an arc. This motion along with the movement of linear actuators
adjusts the position of the frame-holder of a PV panel. The PV panel faces the sun and collects the maximum
amount of sunrays to ensure a highly efficient power collection.
A prototype of the closed-loop solar tracking system was then designed and implemented for testing
and experimental validation as shown in Figure 10. The system was tested on a real site throughout a single
day to check its operation.
Figure 9. Block diagram of the closed-loop solar tracking system
Figure 10. Final solar tracker prototype
Power Supply
PIC
Microcontroller
2 H-
Bridge
Linear
Actuator
Dc
Motor
Gear
2 LS
Solar Tracker with PV Panel
4 photo
sensors
2 H-
Bridge
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5. SOLAR TRACKING IMPLEMENTATION AND EXPERIMENTS
To improve the efficiency of the solar tracking system [18, 19], a feedback for the PV panel’s
position was designed. Four LDR photo-sensors were chosen as feedback elements, and their output shows
the changes in the incidence angles of the sunrays. Two pairs of LDR sensors were used in different tilt
angles to identify the way that gives the most efficient response. The first pair was mounted to face the sun
perpendicularly, while the second pair was mounted as shown in Figure 11. The tilt angle can be adjusted to
let the maximum amount of sunray to reach these LDR sensors. The first pair reported a worse accuracy than
the second pair.
Figure 11. Tilt-angle-mounted LDR photo-sensors
The best accuracy and response to a change in angle can be obtained by using the 45° tilt angle and
by fixing the LDR sensors on the panel surface. Each sensor connects with series resistance equal 122Ω, and
a voltmeter was connected in parallel to each resistance as shown in Figure 12. The PV panel surface was
then moved by hand toward the sun, and the voltage was observed from each voltmeter until an equal reading
was obtained, that is, when each LDR photo-sensor almost has the same sun light intensity reading.
Figure 12. Photo-sensor circuit
A photo-sensor was used to orient the PV panel toward the position of the sun. If this photo-sensor
is shaded, then the comparator in the microcontroller shows some differences in the readings of the two
photo-sensors. In this case, the controller turns the motor toward the direction of the shaded photo-sensor
until it faces the sun again. Doing so may keep the PV panel facing the sun as it moves across the sky.
The output voltage of this circuit increases along with light intensity and a decreasing photo-sensor
resistance. Table 1 presents some readings of photo-sensor resistance and output voltage when the light
intensity changes.
Sensor2
sensor1
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Table 1. Photo-sensor resistance and output voltage readings under a changing light intensity
Photo-Sensor Resistance (Ω) Output Voltage (V) Testing Status
310 1.41 Shaded photo-sensor
60 3.4 Light over photo-sensor
The differences between the two photo-sensors ranged around 2V to 3V when the sensors were not
vertically arranged toward the sun, while these differences are only around 0.2V when these sensors were
placed vertical toward the sun. The DC motors were connected through the drive circuit to the output port of
the microcontroller. These motors can rotate in forward or reverse directions by using the L298 dual
H-bridge driver circuit as shown in Figure 13. When Q1 and Q4 are on while Q2 and Q3 are off, the current
flows through the motor to make it rotate forward as shown in Figure 13. If Q1 and Q4 are turned off while
Q2 and Q3 are turned on, then the motor rotates in reverse.
Figure 13. Basic H-bridge circuit
The drive sequence used for the DC motor and linear actuator is shown in Table 2. All sequences
are presented for the motor and actuator.
The developed circuit boards for the L298 H-bridge driver and PIC16F877A microcontroller were
used in the experimental verification as shown in Figures 14(a) and 14(b), respectively.
Table 2. Drive sequence for each motor
DC Motor Linear Actuator
Right Left Up Down
1 0 0 1 0 1 1 0
(a) (b)
Figure 14. L298 and PIC 16F877A board circuit, (a) L298 board circuit, (b) PIC 16F877A
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After the individual circuit boards were built and tested, a Flowcode software for the
microcontroller was developed by using Proteus 7 Professional to draw the schematic diagram of
the circuitry. Figure 15 shows the system flowchart and outlines the steps of the program during the operation
of the tracking system.
Figure 15. System flowchart
The gains of the amplifiers were adjusted in order for the sensors to produce almost 5V and 1.3V
when the photo-sensor directly faces the sun and when they receive no light (thereby providing high and low
references to pin VRH of the microcontroller), respectively.
Comparisons in microcontroller could be made between opposite sensors reading, and
the movement of the motors can be controlled. For example, if sensor LDR1 has a greater voltage than
LDR4, then the DC motor rotates clockwise until both sensors have the same readings. However, if sensor
LDR4 has a smaller voltage than LDR1, then the DC motor rotates counterclockwise. The same technique
applies for sensors LDR2 and LDR3 with a linear actuator.
If all sensors read less than 0.5V, then the system returns to its initial (set) position and enters
the standby mode, which signifies that the sun has set (night) and that the system returns to the east. The
initial position of the PV’s array is the position when the panel actuated limit switch A. For protection, if an
error occurs by some shade light on one of LDR sensor, then the system will move the PV panel towards
the lightest area nearby. As an alternative, when one of the limit switches is actuated, then the motor stops
working and moves back to the previous point where the switch is not actuated again.
The proposed solar tracking system was tested simultaneously with a stationary PV, and records for
both systems were obtained to check for their differences. The experimental results based on the captured
data are presented in Figure 16.
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Figure 16. Power received: sun-tracking system vs stationary system
6. CONCLUSIONS
The main aim of this study is to maximize PV power and reduce CO2 emission by implementing
a highly efficient and low-cost solar tracking system. A special-alignment closed-loop solar tracker was
designed in this work as an economical, flexible, and efficient frame-holder. A low-cost and flexible PIC 16F
microcontroller was used as the control unit for the proposed system, and the sun position was detected by
using photo-sensors. The developed sun-tracking system captured the maximum possible amount of solar
energy throughout the entire day compared with the stationary system, which only collected maximum solar
energy when the sun was facing the PV panel. The experimental results prove that the efficiency of this
system is especially high in morning and afternoon hours and that using a stationary panel will be ineffective
due to the low radiations received from the sun during these periods. The comparison of the designed solar
trackers reveal a 40% improvement in the efficiency of the proposed system compared with stationary panels.
ACKNOWLEDGEMENTS
The authors thank the Palestine Technical University-Kadoorie for supporting this research as well
as the technicians and undergraduate students who provided technical assistance and lab work support.
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BIOGRAPHIES OF AUTHORS
Anees Abu Sneineh received the M.S. degree in Mechatronics Engineering from Harbin Institute
of Technology, China, in 2004, and Ph.D. degree in Power Electronics and Electrical Drives
Engineering from Harbin Institute of Technology, China, in 2007. He is currently an assistant
professor in Palestine Technical University-Khadoori. His research interests are power
electronics and electric drives, renewable energy systems, electrical machine and its automation,
Robotics and its application, and applied electronics. Dr. Abu Sneineh has published many
papers in international journals and conferences.
Wael A. Salah was born in Hebron, Palestine in 1978. He received his Bachelor degree in
Electrical and Computer Engineering from Palestine Polytechnic University in 2001. He
obtained his MS and PhD degrees in Electrical and Electronic Engineering from Universiti Sains
Malaysia in 2007 and 2012, respectively. From October 2012 until July 2014. Dr. Salah was
connected with the Faculty of Engineering of Multimedia University. Currently, he is an
associate professor at Palestine Technical University - Khadoori. His research interests include
power electronics and electric drives, energy management, energy efficiency, power control and
management, and renewable energy systems. Dr. Salah has published more than 50 papers in
international journals and conferences and is a recognized board member for several
international journals and conference proceedings. He is a member of the Jordanian Engineers
Association and Arab Engineers Association and is a Senior Member of the Institute of Electrical
and Electronics Engineers in the US.