Abstract Modeling of solar cell is a very difficult task. This is because of the non linear behavior of the cell. Different types of modeling for solar cells are available in the literature. The theme of the modeling is based on the solar radiation and temperature of the system and environment. Determination of cell parameters like Iph, Is, Rs ,Rsh and ideality factor generally affects the performance of the solar cell. This paper will basically describe about the one diode model of the solar cell. The initial parameter are evaluated by generating some random number through a computer program and from the manufacturer data sheet provided by the manufacturer. The result of the simulation will describe about the performance of two types of model. Keywords: Solar PV, One diode model, Two diode model
ESTIMATION OF THE PARAMETERS OF SOLAR CELLS FROM CURRENT-VOLTAGE CHARACTERIST...ijscai
This paper presents a method for calculating the light generated current, the series resistance, shun
resistance and the two components of the reverse saturation current usually encountered in the double
diode representation of the solar cell from the experimental values of the current-voltage characteristics
of the cell using genetic algorithm. The theory is able to regenerate the above mentioned parameters to
very good accuracy when applied to cell data that was generated from pre-defined parameters. The
method is applied to various types of space quality solar cells and sub cells. All parameters except the
light generated current are seen to be nearly the same in the case of a cell whose characteristics under
illumination and in dark were analyzed. The light generated current is nearly equal to the short- circuit
current in all cases. The parameters obtained by this method and another method are nearly equal
wherever applicable. The parameters are also shown to represent the current-voltage characteristics
well.
Mathematical Modeling and Simulation of Photovoltic ArrayIJERA Editor
With the increasing demand of power and depleting resources, PV based power system has been a ray of hope
for the future energy scenario. The non-linear V-I Characteristics of PV module depends on solar irradiance and
other environmental factors. This paper deals with power electronics based simulation model for photovoltaic
integrated module. The model includes the real time behavior of the PV module. Detailed simulink modeling for
PV module along with numerical values has been presented. The simulation model has been verified for 36 W
PV modules. The proposed model has been found to exhibit better and accurate result for any irradiance and
temperature variations
Study and Simulation of Inccond Based Maximum Power Point Tracking (MPPT) Alg...paperpublications3
Abstract: The entire world is facing a challenge to overcome the hurdle of energy crisis. It is fairly evident that a need exist for developing alternative energy sources. Amongst all the available renewable energy sources, solar energy appears to be a viable option as it is easily and widely available. If used in a proper way, it has a capacity to fulfill numerous energy needs of the world. Hence there is great scope of work in field of solar photovoltaic aiming at improved and efficient performances. Solar PV modules convert solar energy into electrical form but are having high non-linear current-voltage relationship which implies that they can operate at only one single point for maximum power. So extraction of maximum power in itself becomes a challenge under varying set of conditions of irradiation and temperature. A step by step approach is followed to analyze and address the problem with high frequency switching DC-DC converters that act as an interface between the module and the load and adjust the switching duty ratio so as to match the load line with that of Maximum Power Point load line. Further there exist various control algorithms to modify duty ratio. Their study is done and one such technique Incremental Conductance (IncCond) is used to process current and voltage of PV array to get the duty ratio. The results are obtained for changing radiation as well. In the present study, a review of Hill Climbing MPPT techniques, has been carried out with detailed flowcharts of algorithms and includes latest research papers published on MPPT techniques.
Solar Module Modeling, Simulation And Validation Under Matlab / SimulinkIJERA Editor
Solar modules are systems which convert sunlight into electricity using the physics of semiconductors. Mathematical modeling of these systems uses weather data such as irradiance and temperature as inputs. It provides the current, voltage or power as outputs, which allows plot the characteristic giving the intensity I as a function of voltage V for photovoltaic cells. In this work, we have developed a model for a diode of a Photovoltaic module under the Matlab / Simulink environment. From this model, we have plotted the characteristic curves I-V and P-V of solar cell for different values of temperature and sunlight. The validation has been done by comparing the experimental curve with power from a solar panel HORONYA 20W type with that obtained by the model.
ESTIMATION OF THE PARAMETERS OF SOLAR CELLS FROM CURRENT-VOLTAGE CHARACTERIST...ijscai
This paper presents a method for calculating the light generated current, the series resistance, shun
resistance and the two components of the reverse saturation current usually encountered in the double
diode representation of the solar cell from the experimental values of the current-voltage characteristics
of the cell using genetic algorithm. The theory is able to regenerate the above mentioned parameters to
very good accuracy when applied to cell data that was generated from pre-defined parameters. The
method is applied to various types of space quality solar cells and sub cells. All parameters except the
light generated current are seen to be nearly the same in the case of a cell whose characteristics under
illumination and in dark were analyzed. The light generated current is nearly equal to the short- circuit
current in all cases. The parameters obtained by this method and another method are nearly equal
wherever applicable. The parameters are also shown to represent the current-voltage characteristics
well.
Mathematical Modeling and Simulation of Photovoltic ArrayIJERA Editor
With the increasing demand of power and depleting resources, PV based power system has been a ray of hope
for the future energy scenario. The non-linear V-I Characteristics of PV module depends on solar irradiance and
other environmental factors. This paper deals with power electronics based simulation model for photovoltaic
integrated module. The model includes the real time behavior of the PV module. Detailed simulink modeling for
PV module along with numerical values has been presented. The simulation model has been verified for 36 W
PV modules. The proposed model has been found to exhibit better and accurate result for any irradiance and
temperature variations
Study and Simulation of Inccond Based Maximum Power Point Tracking (MPPT) Alg...paperpublications3
Abstract: The entire world is facing a challenge to overcome the hurdle of energy crisis. It is fairly evident that a need exist for developing alternative energy sources. Amongst all the available renewable energy sources, solar energy appears to be a viable option as it is easily and widely available. If used in a proper way, it has a capacity to fulfill numerous energy needs of the world. Hence there is great scope of work in field of solar photovoltaic aiming at improved and efficient performances. Solar PV modules convert solar energy into electrical form but are having high non-linear current-voltage relationship which implies that they can operate at only one single point for maximum power. So extraction of maximum power in itself becomes a challenge under varying set of conditions of irradiation and temperature. A step by step approach is followed to analyze and address the problem with high frequency switching DC-DC converters that act as an interface between the module and the load and adjust the switching duty ratio so as to match the load line with that of Maximum Power Point load line. Further there exist various control algorithms to modify duty ratio. Their study is done and one such technique Incremental Conductance (IncCond) is used to process current and voltage of PV array to get the duty ratio. The results are obtained for changing radiation as well. In the present study, a review of Hill Climbing MPPT techniques, has been carried out with detailed flowcharts of algorithms and includes latest research papers published on MPPT techniques.
Solar Module Modeling, Simulation And Validation Under Matlab / SimulinkIJERA Editor
Solar modules are systems which convert sunlight into electricity using the physics of semiconductors. Mathematical modeling of these systems uses weather data such as irradiance and temperature as inputs. It provides the current, voltage or power as outputs, which allows plot the characteristic giving the intensity I as a function of voltage V for photovoltaic cells. In this work, we have developed a model for a diode of a Photovoltaic module under the Matlab / Simulink environment. From this model, we have plotted the characteristic curves I-V and P-V of solar cell for different values of temperature and sunlight. The validation has been done by comparing the experimental curve with power from a solar panel HORONYA 20W type with that obtained by the model.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
This paper presents a modeling of 185W Mono-crystalline Solar Panel Using Matlab/Simulink approach. The objective of this project to carried out the efficiency and performance of Solar Panel. The type of solar panel in this project is a mono-crystalline by the SC Origin Company. A temperature and irradiance are the input parameters of the system. The outputs of the system are voltage, current and power. In addition, the data of temperature and irradiance from August to December 2017 by RETScreen Website. This data are used as an inout for PV System and the curve of I-V and P-V as the output. The data are collected at location 1.86° N, 103.09° E which is in Bandar Penggaram, Johor. The output result of I-V and P-V will be used to compare with the reference.
A Management of power flow for DC Microgrid with Solar and Wind Energy SourcesAsoka Technologies
Today there is a rapid proliferation of DC loads into the market and DC micro grid with renewable energy sources is emerging as a possible solution to meet growing energy demand. As different energy sources like solar, wind, fuel cell, and diesel generators can be integrated into the DC grid, Management of power flow among the sources is essential. In this paper, a control strategy for Management of power flow in DC micro grid with solar and wind energy sources is presented. As the regulation of voltage profile is important in a standalone system, a dedicated converter is to be employed for maintaining the DC link voltage. DC link voltage is regulated by the battery circuit while maximum power is extracted from Solar and Wind to feed the loads connected at the DC bus. A power flow algorithm is developed to control among three sources in the DC Microgrid. The algorithm is tested for various load conditions and for fluctuations in solar and wind power in MATLAB/SIMULINK environment.
Modeling and Simulation of Solar Photovoltaic Systemijtsrd
Solar energy is a vital untapped resource in a tropical country like ours. The main hindrance for the penetration and reach of solar PV systems is their low efficiency and high capital cost. The efficiency of solar PV is very low. In order to increase the efficiency, Maximum Power Point Tracking (MPPT) techniques are to be undertaken to match the source and load property. These techniques are employed in PV systems to make full utilization of PV array output power. Recently, many MPPT algorithms of PV system have been proposed which depends on solar irradiation and temperature, but perturb and observe (P&O) and Incremental conductance algorithms are basic and most widely used. This project firstly introduces a Mat lab Simulink of photovoltaic array. To achieve the maximum power point tracking the Incremental Conductance method and perturb and observed (P&O) method are used. These two algorithms are employed with PV model along with converter in Mat lab Simulink. Three different converter boost, buck boost and cuk converter are design according to requirement and used. Few comparisons such as voltage, current and power output for each different combination have been recorded. Irfan Khan | Ameen Uddin Ahmad"Modeling and Simulation of Solar Photovoltaic System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-6 , October 2017, URL: http://www.ijtsrd.com/papers/ijtsrd5743.pdf http://www.ijtsrd.com/engineering/electrical-engineering/5743/modeling-and-simulation-of-solar--photovoltaic-system/irfan-khan
Artificial neural network approach for more accurate solar cell electrical ci...ijcsa
The implementation of a neural network especially for improving the accuracy of the electrical equivalent
circuit parameters of a solar cell is proposed. These electrical parameters mainly depend on solar
irradiation and temperature, but their relationship is nonlinear and cannot be easily expressed by any
analytical equation. Therefore, the proposed neural network is trained once by using some measured
current–voltage curves, and the equivalent circuit parameters are estimated by only reading the samples of
solar irradiation and temperature very quickly. Taking the effect of sunlight irradiance and ambient
temperature into consideration, the output current and power characteristics of PV model are simulated
and optimized. Finally, the proposed model has been validated with datasheet and experimental data from
commercial PV module, Kotak PV-KM0060 (60Wp).The comparison show the higher accuracy of the ANN
model than the conventional one diode circuit model for all operating conditions.
This project is based on Construction and connection of photovoltaic module and related theories about it. To utilize maximum energy from the photovoltaic cell first of all understanding of it characteristics is very important because of this in starting of project we done proper study on characteristics of photo voltaic module and maximum power point. After got proper understanding of characteristics we try to use output of photo voltaic cell efficiently with help of Maximum power point tracker and cuk converter.
Solar cells are a major alternate source of sustainable energy in the usual condition of depleting non- renewable energy sources. Nowadays, this source is getting more and more important due to its use in large and small-scale installations. One of the major causes of energy losses in photovoltaic (PV) modules is the shading. It can happen due to clouds passing, near trees, and/or neighboring structures. Generally, there are two types of PV module Shading which are either partial shading or complete shading. Both have a significant impact on the solar module output power. This paper is an attempt of carrying out a study of the electrical characteristics of a solar module with various percentages of simulated shading. The solar module tester (SMT) simulator was used in this study. The study approved the direct correlation between short-circuit current and solar irradiance. The advantage of using SMT is its stable irradiance in comparison to the practical unstable solar irradiance within the same period. The results of both methods of shading simulation show that shading has a significant impact on the performance of solar panel in terms of efficiency, fill factor and output power. For better performance, solar panels should install in shading free places as much as its possible.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Find out how to leverage the power of analytics to increase the social impact of your non-profit organization. Non profit organizations collect data through various means and tools. How do they use the data collected to understand the landscape they operate, make future predictions, and understand optimal ways to increase their impact heading towards the future.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
This paper presents a modeling of 185W Mono-crystalline Solar Panel Using Matlab/Simulink approach. The objective of this project to carried out the efficiency and performance of Solar Panel. The type of solar panel in this project is a mono-crystalline by the SC Origin Company. A temperature and irradiance are the input parameters of the system. The outputs of the system are voltage, current and power. In addition, the data of temperature and irradiance from August to December 2017 by RETScreen Website. This data are used as an inout for PV System and the curve of I-V and P-V as the output. The data are collected at location 1.86° N, 103.09° E which is in Bandar Penggaram, Johor. The output result of I-V and P-V will be used to compare with the reference.
A Management of power flow for DC Microgrid with Solar and Wind Energy SourcesAsoka Technologies
Today there is a rapid proliferation of DC loads into the market and DC micro grid with renewable energy sources is emerging as a possible solution to meet growing energy demand. As different energy sources like solar, wind, fuel cell, and diesel generators can be integrated into the DC grid, Management of power flow among the sources is essential. In this paper, a control strategy for Management of power flow in DC micro grid with solar and wind energy sources is presented. As the regulation of voltage profile is important in a standalone system, a dedicated converter is to be employed for maintaining the DC link voltage. DC link voltage is regulated by the battery circuit while maximum power is extracted from Solar and Wind to feed the loads connected at the DC bus. A power flow algorithm is developed to control among three sources in the DC Microgrid. The algorithm is tested for various load conditions and for fluctuations in solar and wind power in MATLAB/SIMULINK environment.
Modeling and Simulation of Solar Photovoltaic Systemijtsrd
Solar energy is a vital untapped resource in a tropical country like ours. The main hindrance for the penetration and reach of solar PV systems is their low efficiency and high capital cost. The efficiency of solar PV is very low. In order to increase the efficiency, Maximum Power Point Tracking (MPPT) techniques are to be undertaken to match the source and load property. These techniques are employed in PV systems to make full utilization of PV array output power. Recently, many MPPT algorithms of PV system have been proposed which depends on solar irradiation and temperature, but perturb and observe (P&O) and Incremental conductance algorithms are basic and most widely used. This project firstly introduces a Mat lab Simulink of photovoltaic array. To achieve the maximum power point tracking the Incremental Conductance method and perturb and observed (P&O) method are used. These two algorithms are employed with PV model along with converter in Mat lab Simulink. Three different converter boost, buck boost and cuk converter are design according to requirement and used. Few comparisons such as voltage, current and power output for each different combination have been recorded. Irfan Khan | Ameen Uddin Ahmad"Modeling and Simulation of Solar Photovoltaic System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-6 , October 2017, URL: http://www.ijtsrd.com/papers/ijtsrd5743.pdf http://www.ijtsrd.com/engineering/electrical-engineering/5743/modeling-and-simulation-of-solar--photovoltaic-system/irfan-khan
Artificial neural network approach for more accurate solar cell electrical ci...ijcsa
The implementation of a neural network especially for improving the accuracy of the electrical equivalent
circuit parameters of a solar cell is proposed. These electrical parameters mainly depend on solar
irradiation and temperature, but their relationship is nonlinear and cannot be easily expressed by any
analytical equation. Therefore, the proposed neural network is trained once by using some measured
current–voltage curves, and the equivalent circuit parameters are estimated by only reading the samples of
solar irradiation and temperature very quickly. Taking the effect of sunlight irradiance and ambient
temperature into consideration, the output current and power characteristics of PV model are simulated
and optimized. Finally, the proposed model has been validated with datasheet and experimental data from
commercial PV module, Kotak PV-KM0060 (60Wp).The comparison show the higher accuracy of the ANN
model than the conventional one diode circuit model for all operating conditions.
This project is based on Construction and connection of photovoltaic module and related theories about it. To utilize maximum energy from the photovoltaic cell first of all understanding of it characteristics is very important because of this in starting of project we done proper study on characteristics of photo voltaic module and maximum power point. After got proper understanding of characteristics we try to use output of photo voltaic cell efficiently with help of Maximum power point tracker and cuk converter.
Solar cells are a major alternate source of sustainable energy in the usual condition of depleting non- renewable energy sources. Nowadays, this source is getting more and more important due to its use in large and small-scale installations. One of the major causes of energy losses in photovoltaic (PV) modules is the shading. It can happen due to clouds passing, near trees, and/or neighboring structures. Generally, there are two types of PV module Shading which are either partial shading or complete shading. Both have a significant impact on the solar module output power. This paper is an attempt of carrying out a study of the electrical characteristics of a solar module with various percentages of simulated shading. The solar module tester (SMT) simulator was used in this study. The study approved the direct correlation between short-circuit current and solar irradiance. The advantage of using SMT is its stable irradiance in comparison to the practical unstable solar irradiance within the same period. The results of both methods of shading simulation show that shading has a significant impact on the performance of solar panel in terms of efficiency, fill factor and output power. For better performance, solar panels should install in shading free places as much as its possible.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Find out how to leverage the power of analytics to increase the social impact of your non-profit organization. Non profit organizations collect data through various means and tools. How do they use the data collected to understand the landscape they operate, make future predictions, and understand optimal ways to increase their impact heading towards the future.
The Differences between Single Diode Model and Double Diode Models of a Solar...ssuser793b4e
This research paper systematically reviewed and investigated single
diode model and double diode model of a solar photovoltaic systems in terms
of accuracy, differences under major unknown PV parameters, different
optimization and fabrication. This research paper reviewed the differences and
the similarities between the single diode model and double diode model. From
the review, it was clear that single diode model has less computation time and
number of unknown parameters compared to double diode model. The double
diode model on its own superiority is more accurate under solar shading
condition effect than single diode model but single diode model performs
better under high insolation levels. None of the two models is superior than
the other but the solar photovoltaic modelers/installers should bear the solar
irradiance of the environment before installation
A study on modelling and simulation of photovoltaic cellseSAT Journals
Abstract This Paper presents a detailed study on the types of modelling of the PV Panel for simulation studies. The main concern of this study is to analyze the results and compare them under standard test conditions. PV systems are generally integrated with specific control algorithms in order to extract the maximum possible power. Hence it is highly imperative that the Maximum Power Point (MPP) is achieved effectively and thus we need to design a model from which the MPPT algorithm can be realized in an efficient way. Also other parameters should be taken into account for finding the best model for the use in simulation. It is very important to choose the appropriate model based on the application. The models used for study in this paper include the single diode model, two diode model and Simscape modelling. MATLAB/Simulink presents a powerful tool to study such systems. The work tests the accuracy of the models under different temperature and irradiance conditions. The two diode model is known to have better accuracy at low irradiance levels which allows for a more accurate prediction of PV system performance. Simscape, part of Simulink environment, has a solar cell block that makes building a PV model straightforward and much easier programming with full demonstration to all system details. On the basis of the study, the best model that can be used for simulation purposes can be selected. It is envisaged that the work can be very useful for professionals who require simple and accurate PV simulators for their design. All the systems here are modeled and simulated in MATLAB/Simulink environment. Keywords: PV cell, STC, MATLAB Simulink, Ideality Factor
Modeling and simulation of solar photovoltaic module using matlab simulinkeSAT Journals
Abstract
The paper presents the modeling ,simulation and implementation of the solar photovoltaic cell using MATLAB/SIMULINK .The I-V ,
P-V & I-V characteristics are obtained for (1) Single solar cell module (2) Solar PV module with variable temp.& fixed radiation (3)
Solar PV module with fixed temp.& variable radiation with M.file and mathematical model using MATLAB/SIMULINK .
Index Terms: photovoltaic module, radiation, temperature, M.file, MATLAB/SIMULINK
A Novel Approach on Photovoltaic Technologies for Power Injection in Grid Usi...IJERA Editor
The paper presents the simulation of the Solar Photovoltaic module using Matlab Simulink. This model is based on mathematical equations and is described through an equivalent circuit including a photocurrent source, a diode, a series resistor and a shunt resistor. This paper presents integration of the grid distribution network in Indian scenario with solar power technology to meet the additional electrical energy demand of urban as well as rural sectors which are both rapidly expanding. First of all the data of a real life power plant having 24V, 230W Power PV module has been compared and analyzed with that of matlab program output for identical module and it has been find out that a variation in temperature affects the parameters values as well as the performance of the solar module. After the above analysis the design and Simulink implementation for single phase power grid connected PV system has been done. The system includes the PV array model, the integration of the MPPT with boost dc converter , dc to ac inverter, single phase series load connected to ac grid. It is demonstrated that the model works well at different temperature conditions and predicting the General behavior of single-phase grid- connected PV systems .
Estimation Of The Parameters Of Solar Cells From Current-Voltage Characterist...IJSCAI Journal
This paper presents a method for calculating the light generated current, the series resistance, shun
resistance and the two components of the reverse saturation current usually encountered in the double
diode representation of
the solar cell from the experimental values of the current
-
voltage characteristics
of the cell using genetic algorithm. The theory is able to regenerate the above mentioned parameters to
very good accuracy when applied to cell data that was generated from
pre
-
defined parameters. The
method is applied to various types of space quality solar cells and sub cells. All parameters except the
light generated current are seen to be nearly the same in the case of a cell whose characteristics under
illumination and i
n dark were analyzed. The light generated current is nearly equal to the short
-
circuit
current in all cases. The parameters obtained by this method and another method are nearly equal
wherever applicable. The parameters are also shown to represent the cur
rent
-
voltage characteristics
well
ESTIMATION OF THE PARAMETERS OF SOLAR CELLS FROM CURRENT-VOLTAGE CHARACTERIST...ijscai
This paper presents a method for calculating the light generated current, the series resistance, shun
resistance and the two components of the reverse saturation current usually encountered in the double
diode representation of the solar cell from the experimental values of the current-voltage characteristics
of the cell using genetic algorithm. The theory is able to regenerate the above mentioned parameters to
very good accuracy when applied to cell data that was generated from pre-defined parameters. The
method is applied to various types of space quality solar cells and sub cells. All parameters except the
light generated current are seen to be nearly the same in the case of a cell whose characteristics under
illumination and in dark were analyzed. The light generated current is nearly equal to the short- circuit
current in all cases. The parameters obtained by this method and another method are nearly equal
wherever applicable. The parameters are also shown to represent the current-voltage characteristics
well.
Identification study of solar cell/module using recent optimization techniquesIJECEIAES
This paper proposes the application of a novel metaphor-free population optimization based on the mathematics of the Runge Kutta method (RUN) for parameter extraction of a double-diode model of the unknown solar cell and photovoltaic (PV) module parameters. The RUN optimizer is employed to determine the seven unknown parameters of the two-diode model. Fitting the experimental data is the main objective of the extracted unknown parameters to develop a generic PV model. Consequently, the root means squared error (RMSE) between the measured and estimated data is considered as the primary objective function. The suggested objective function achieves the closeness degree between the estimated and experimental data. For getting the generic model, applications of the proposed RUN are carried out on two different commercial PV cells. To assess the proposed algorithm, a comprehensive comparison study is employed and compared with several well-matured optimization algorithms reported in the literature. Numerical simulations prove the high precision and fast response of the proposed RUN algorithm for solving multiple PV models. Added to that, the RUN can be considered as a good alternative optimization method for solving power systems optimization problems.
The Application of Artificial Intelligence Techniques for Modeling and Simula...MohammadMomani26
Abstract— This paper accurately models photovoltaic (PV) arrays based on genetic and Cuckoo Optimization algorithms. These algorithms are used to obtain the parameters of the array model based on a PV cell datasheet information. In this work, a comparison between the two-diode model and the single-diode model is presented. The adopted model is implemented on simulation platforms using MATLAB 2020a environment and it is designed to be of use to power electronics specialists. The mathematical analysis of the model is presented in detail where different cases of different temperature and solar irradiance are adopted. The model was tested and validated with experimental data. Validation and comparison data are taken from the Mutah university PV power plant. The results show that the two-diode model is more accurate than the single diode model, Cuckoo optimization algorithm handles the problem with low iterations and better fitness value as compared with the genetic algorithm. The work in paper is useful for power electronics designers and researchers who need an effective and more accurate way to model and simulate photovoltaic arrays.
Mathematical modeling, simulation and validation of photovoltaic cellseSAT Journals
Abstract In this paper, an analysis has been done on the effect of varying physical and environmental factors on the I-V (current voltage characteristics) of a photovoltaic cell using Matlab-Simulink. A standalone model has been created based on the mathematical relations between various parameters in photovoltaic cells made up of a single diode, a series resistance, and a shunt resistance. To validate the developed model, the values from I-V characteristics of this model have been compared with the experimental results. In addition, simulations have been done for I-V characteristics for different temperature and resistance values. The results obtained are analyzed and presented in this paper. Keywords: Solar cell, Modeling, Matlab-simulink
Development and Simulation of Stand Alone Photovoltaic Model Using Matlab/Sim...IJPEDS-IAES
This paper presents the implementation of a generalized photovoltaic model
using Matlab/Simulink software package, which can be representative of PV
cell, module for easy use on simulation platform. The proposed model is
designed with a user-friendly icon and a dialog box like Simulink block
libraries which makes the generalized PV model easily simulated and
analyzed in conjunction with power electronics. Taking the effect of sunlight
irradiance and cell temperature into consideration, the output current and
power characteristics of PV model are simulated and optimized using the
proposed model. The proposed model enables the dynamics of PV power
system to be easily simulated, analyzed and optimized.
Modeling and Simulation of Solar Photovoltaic module using Matlab/SimulinkIOSR Journals
Abstract: This paper presents the circuit model of photovoltaic (PV) module. Simulation and modeling is done
using MATLAB/ Simulink software package. The proposed model is user friendly and can be used as a common
platform for both applied physics scientist and power electronics engineers. A detailed modeling procedure is
presented. The designed model is verified by using STP255-20/Wd PV module. The IV and PV characteristics
are simulated at different temperature and irradiance conditions and the results are verified. The proposed
model is very simple fast and accurate. The designed model can be used for analysis of PV characteristics and
for simulation of maximum power point tracking algorithms
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
A Comprehensive Analysis of Partial Shading Effect on Output Parameters of a ...IJECEIAES
One of the issues of grid-connected photovoltaic systems is the effect of the partial shading on the key parameters and performance of the system. In practice, a share of the entire PV panel may shadded because of the various reasons, inevitably. In this case, the key parameters of the system output are affected with respect to the shading extent and paradigm. In this paper, the effects of the various partial shading patterns on the ouput of the system are examined. This is performed by deriving relevant equations and appropriate modeling of the system and defining different scenarios. The analysis on the system performance is carried out on the dominant output parameters including panel voltage, panel power, and total harmonic distortion (THD) of the inverter. Also, the study considers the effect of using bypass diodes in the panels or not. Addintionally, to compare derived conclusions, the study is implementd on a practical system. The set up is made up of a 7-level multilevel inverter, a Z-source converter, and 1 kW lateral circuitry. The real world test results of the study demonstrate a negligible deviation compared to the simulation results.
A MATLAB /Simulink Modal of Triple-Junction Solar Cell and MPPT Based on Incr...IJERA Editor
Photovoltaic energy is the most important energy resource since it is clean, pollution free, and unlimited. In
current years, a large number of techniques have been projected for tracking the maximum power point.
Maximum power point tracking is used in photovoltaic systems to maximize the photovoltaic array output
power, irrespective of the temperature and radiation conditions and of the load electrical characteristics the PV
array output power is used to directly control the boost converter, thus reducing the complexity of the system.
The method is based on use of a Incremental conductance of the PV to determine an optimum operating current
for the maximum output power. The implementation of a PV model is based on the triple-junction solar cell in
the form of masked block in Matlab/Simulink software package that has a user-friendly icon. It is fast and
accurate technique to follow the maximum power point. This paper presents a new Matlab/Simulink model of a
PV module and a maximum power point tracking (MPPT) system for high efficiency InGaP/InGaAs/Ge triplejunction
solar cell.
Maximum power point tracking based on improved spotted hyena optimizer for s...IJECEIAES
The conventional maximum power point tracking (MPPT) method such as perturb and observe (P&O) under partial shading conditions with non-uniform irradiation, can get trapped on local maximum power point (LMPP) and cannot reach global maximum power point (GMPP). This study proposes a bio-inspired metaheuristic algorithm spotted hyena optimizer (SHO) and improved SHO as a new MPPT technique. The proposed SHO-MPPT and improved SHO-MPPT are used to extract GMPP from solar photovoltaic (PV) arrays operated under uniform irradiation and non-uniform irradiation. Simulation with Powersim (PSIM) and experimental with the emulated PV source were presented. Furthermore, to evaluate the performance of the proposed algorithm, SHO-MPPT is compared with P&O-MPPT and particle swarm optimization (PSO)-MPPT. The SHO-MPPT has an accuracy of 99% and has the good capability, but there are power fluctuations before reaching MPP. Therefore, improved SHO-MPPT was developed to get better results. The improved SHO-MPPT proved high accuracy of 99% and faster than SHO-MPPT and PSO-MPPT in tracking the maximum power point (MPP). Furthermore, there are minor power fluctuations.
Similar to Comparative study of one and two diode model of solar photovoltaic cell (20)
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
Managing drought short term strategies in semi arid regions a case studyeSAT Journals
Abstract
Drought management needs multidisciplinary action. Interdisciplinary efforts among the experts in various fields of the droughts
prone areas are helpful to achieve tangible and permanent solution for this recurring problem. The Gulbarga district having the total
area around 16, 240 sq.km, and accounts 8.45 per cent of the Karnataka state area. The district has been situated with latitude 17º 19'
60" North and longitude of 76 º 49' 60" east. The district is situated entirely on the Deccan plateau positioned at a height of 300 to
750 m above MSL. Sub-tropical, semi-arid type is one among the drought prone districts of Karnataka State. The drought
management is very important for a district like Gulbarga. In this paper various short term strategies are discussed to mitigate the
drought condition in the district.
Keywords: Drought, South-West monsoon, Semi-Arid, Rainfall, Strategies etc.
Life cycle cost analysis of overlay for an urban road in bangaloreeSAT Journals
Abstract
Pavements are subjected to severe condition of stresses and weathering effects from the day they are constructed and opened to traffic
mainly due to its fatigue behavior and environmental effects. Therefore, pavement rehabilitation is one of the most important
components of entire road systems. This paper highlights the design of concrete pavement with added mono fibers like polypropylene,
steel and hybrid fibres for a widened portion of existing concrete pavement and various overlay alternatives for an existing
bituminous pavement in an urban road in Bangalore. Along with this, Life cycle cost analyses at these sections are done by Net
Present Value (NPV) method to identify the most feasible option. The results show that though the initial cost of construction of
concrete overlay is high, over a period of time it prove to be better than the bituminous overlay considering the whole life cycle cost.
The economic analysis also indicates that, out of the three fibre options, hybrid reinforced concrete would be economical without
compromising the performance of the pavement.
Keywords: - Fatigue, Life cycle cost analysis, Net Present Value method, Overlay, Rehabilitation
Laboratory studies of dense bituminous mixes ii with reclaimed asphalt materialseSAT Journals
Abstract
The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to
provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing
pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this
are today’s burning issue and has become the purpose of the study.
In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The
mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP).
RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II)
gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics.
Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the
variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the
methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes.
Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II
Laboratory investigation of expansive soil stabilized with natural inorganic ...eSAT Journals
Abstract
Soil stabilization has proven to be one of the oldest techniques to improve the soil properties. Literature review conducted revealed
that uses of natural inorganic stabilizers are found to be one of the best options for soil stabilization. In this regard an attempt has
been made to evaluate the influence of RBI-81 stabilizer on properties of black cotton soil through laboratory investigations. Black
cotton soil with varying percentages of RBI-81 viz., 0, 0.5, 1, 1.5, 2, and 2.5 percent were studied for moisture density relationships
and strength behaviour of soils. Also the effect of curing period was evaluated as literature review clearly emphasized the strength
gain of soils stabilized with RBI-81 over a period of time. The results obtained shows that the unconfined compressive strength of
specimens treated with RBI-81 increased approximately by 250% for a curing period of 28 days as compared to virgin soil. Further
the CBR value improved approximately by 400%. The studies indicated an increasing trend for soil strength behaviour with
increasing percentage of RBI-81 suggesting its potential applications in soil stabilization.
Influence of reinforcement on the behavior of hollow concrete block masonry p...eSAT Journals
Abstract
Reinforced masonry was developed to exploit the strength potential of masonry and to solve its lack of tensile strength. Experimental
and analytical studies have been carried out to investigate the effect of reinforcement on the behavior of hollow concrete block
masonry prisms under compression and to predict ultimate failure compressive strength. In the numerical program, three dimensional
non-linear finite elements (FE) model based on the micro-modeling approach is developed for both unreinforced and reinforced
masonry prisms using ANSYS (14.5). The proposed FE model uses multi-linear stress-strain relationships to model the non-linear
behavior of hollow concrete block, mortar, and grout. Willam-Warnke’s five parameter failure theory has been adopted to model the
failure of masonry materials. The comparison of the numerical and experimental results indicates that the FE models can successfully
capture the highly nonlinear behavior of the physical specimens and accurately predict their strength and failure mechanisms.
Keywords: Structural masonry, Hollow concrete block prism, grout, Compression failure, Finite element method,
Numerical modeling.
Influence of compaction energy on soil stabilized with chemical stabilizereSAT Journals
Abstract
Increase in traffic along with heavier magnitude of wheel loads cause rapid deterioration in pavements. There is a need to improve
density, strength of soil subgrade and other pavement layers. In this study an attempt is made to improve the properties of locally
available loamy soil using twin approaches viz., i) increasing the compaction of soil and ii) treating the soil with chemical stabilizer.
Laboratory studies are carried out on both untreated and treated soil samples compacted by different compaction efforts. Studies
show that increase in compaction effort results in increase in density of soil. However in soil treated with chemical stabilizer, rate of
increase in density is not significant. The soil treated with chemical stabilizer exhibits improvement in both strength and performance
properties.
Keywords: compaction, density, subgradestabilization, resilient modulus
Geographical information system (gis) for water resources managementeSAT Journals
Abstract
Water resources projects are inherited with overlapping and at times conflicting objectives. These projects are often of varied sizes
ranging from major projects with command areas of millions of hectares to very small projects implemented at the local level. Thus,
in all these projects there is seldom proper coordination which is essential for ensuring collective sustainability.
Integrated watershed development and management is the accepted answer but in turn requires a comprehensive framework that can
enable planning process involving all the stakeholders at different levels and scales is compulsory. Such a unified hydrological
framework is essential to evaluate the cause and effect of all the proposed actions within the drainage basins.
The present paper describes a hydrological framework developed in the form of a Hydrologic Information System (HIS) which is
intended to meet the specific information needs of the various line departments of a typical State connected with water related aspects.
The HIS consist of a hydrologic information database coupled with tools for collating primary and secondary data and tools for
analyzing and visualizing the data and information. The HIS also incorporates hydrological model base for indirect assessment of
various entities of water balance in space and time. The framework would be maintained and updated to reflect fully the most
accurate ground truth data and the infrastructure requirements for planning and management.
Keywords: Hydrological Information System (HIS); WebGIS; Data Model; Web Mapping Services
Forest type mapping of bidar forest division, karnataka using geoinformatics ...eSAT Journals
Abstract
The study demonstrate the potentiality of satellite remote sensing technique for the generation of baseline information on forest types
including tree plantation details in Bidar forest division, Karnataka covering an area of 5814.60Sq.Kms. The Total Area of Bidar
forest division is 5814Sq.Kms analysis of the satellite data in the study area reveals that about 84% of the total area is Covered by
crop land, 1.778% of the area is covered by dry deciduous forest, 1.38 % of mixed plantation, which is very threatening to the
environmental stability of the forest, future plantation site has been mapped. With the use of latest Geo-informatics technology proper
and exact condition of the trees can be observed and necessary precautions can be taken for future plantation works in an appropriate
manner
Keywords:-RS, GIS, GPS, Forest Type, Tree Plantation
Factors influencing compressive strength of geopolymer concreteeSAT Journals
Abstract
To study effects of several factors on the properties of fly ash based geopolymer concrete on the compressive strength and also the
cost comparison with the normal concrete. The test variables were molarities of sodium hydroxide(NaOH) 8M,14M and 16M, ratio of
NaOH to sodium silicate (Na2SiO3) 1, 1.5, 2 and 2.5, alkaline liquid to fly ash ratio 0.35 and 0.40 and replacement of water in
Na2SiO3 solution by 10%, 20% and 30% were used in the present study. The test results indicated that the highest compressive
strength 54 MPa was observed for 16M of NaOH, ratio of NaOH to Na2SiO3 2.5 and alkaline liquid to fly ash ratio of 0.35. Lowest
compressive strength of 27 MPa was observed for 8M of NaOH, ratio of NaOH to Na2SiO3 is 1 and alkaline liquid to fly ash ratio of
0.40. Alkaline liquid to fly ash ratio of 0.35, water replacement of 10% and 30% for 8 and 16 molarity of NaOH and has resulted in
compressive strength of 36 MPa and 20 MPa respectively. Superplasticiser dosage of 2 % by weight of fly ash has given higher
strength in all cases.
Keywords: compressive strength, alkaline liquid, fly ash
Experimental investigation on circular hollow steel columns in filled with li...eSAT Journals
Abstract
Composite Circular hollow Steel tubes with and without GFRP infill for three different grades of Light weight concrete are tested for
ultimate load capacity and axial shortening , under Cyclic loading. Steel tubes are compared for different lengths, cross sections and
thickness. Specimens were tested separately after adopting Taguchi’s L9 (Latin Squares) Orthogonal array in order to save the initial
experimental cost on number of specimens and experimental duration. Analysis was carried out using ANN (Artificial Neural
Network) technique with the assistance of Mini Tab- a statistical soft tool. Comparison for predicted, experimental & ANN output is
obtained from linear regression plots. From this research study, it can be concluded that *Cross sectional area of steel tube has most
significant effect on ultimate load carrying capacity, *as length of steel tube increased- load carrying capacity decreased & *ANN
modeling predicted acceptable results. Thus ANN tool can be utilized for predicting ultimate load carrying capacity for composite
columns.
Keywords: Light weight concrete, GFRP, Artificial Neural Network, Linear Regression, Back propagation, orthogonal
Array, Latin Squares
Experimental behavior of circular hsscfrc filled steel tubular columns under ...eSAT Journals
Abstract
This paper presents an outlook on experimental behavior and a comparison with predicted formula on the behaviour of circular
concentrically loaded self-consolidating fibre reinforced concrete filled steel tube columns (HSSCFRC). Forty-five specimens were
tested. The main parameters varied in the tests are: (1) percentage of fiber (2) tube diameter or width to wall thickness ratio (D/t
from 15 to 25) (3) L/d ratio from 2.97 to 7.04 the results from these predictions were compared with the experimental data. The
experimental results) were also validated in this study.
Keywords: Self-compacting concrete; Concrete-filled steel tube; axial load behavior; Ultimate capacity.
Evaluation of punching shear in flat slabseSAT Journals
Abstract
Flat-slab construction has been widely used in construction today because of many advantages that it offers. The basic philosophy in
the design of flat slab is to consider only gravity forces; this method ignores the effect of punching shear due to unbalanced moments
at the slab column junction which is critical. An attempt has been made to generate generalized design sheets which accounts both
punching shear due to gravity loads and unbalanced moments for cases (a) interior column; (b) edge column (bending perpendicular
to shorter edge); (c) edge column (bending parallel to shorter edge); (d) corner column. These design sheets are prepared as per
codal provisions of IS 456-2000. These design sheets will be helpful in calculating the shear reinforcement to be provided at the
critical section which is ignored in many design offices. Apart from its usefulness in evaluating punching shear and the necessary
shear reinforcement, the design sheets developed will enable the designer to fix the depth of flat slab during the initial phase of the
design.
Keywords: Flat slabs, punching shear, unbalanced moment.
Evaluation of performance of intake tower dam for recent earthquake in indiaeSAT Journals
Abstract
Intake towers are typically tall, hollow, reinforced concrete structures and form entrance to reservoir outlet works. A parametric
study on dynamic behavior of circular cylindrical towers can be carried out to study the effect of depth of submergence, wall thickness
and slenderness ratio, and also effect on tower considering dynamic analysis for time history function of different soil condition and
by Goyal and Chopra accounting interaction effects of added hydrodynamic mass of surrounding and inside water in intake tower of
dam
Key words: Hydrodynamic mass, Depth of submergence, Reservoir, Time history analysis,
Evaluation of operational efficiency of urban road network using travel time ...eSAT Journals
Abstract
Efficiency of the road network system is analyzed by travel time reliability measures. The study overlooks on an important measure of
travel time reliability and prioritizing Tiruchirappalli road network. Traffic volume and travel time were collected using license plate
matching method. Travel time measures were estimated from average travel time and 95th travel time. Effect of non-motorized vehicle
on efficiency of road system was evaluated. Relation between buffer time index and traffic volume was created. Travel time model has
been developed and travel time measure was validated. Then service quality of road sections in network were graded based on
travel time reliability measures.
Keywords: Buffer Time Index (BTI); Average Travel Time (ATT); Travel Time Reliability (TTR); Buffer Time (BT).
Estimation of surface runoff in nallur amanikere watershed using scs cn methodeSAT Journals
Abstract
The development of watershed aims at productive utilization of all the available natural resources in the entire area extending from
ridge line to stream outlet. The per capita availability of land for cultivation has been decreasing over the years. Therefore, water and
the related land resources must be developed, utilized and managed in an integrated and comprehensive manner. Remote sensing and
GIS techniques are being increasingly used for planning, management and development of natural resources. The study area, Nallur
Amanikere watershed geographically lies between 110 38’ and 110 52’ N latitude and 760 30’ and 760 50’ E longitude with an area of
415.68 Sq. km. The thematic layers such as land use/land cover and soil maps were derived from remotely sensed data and overlayed
through ArcGIS software to assign the curve number on polygon wise. The daily rainfall data of six rain gauge stations in and around
the watershed (2001-2011) was used to estimate the daily runoff from the watershed using Soil Conservation Service - Curve Number
(SCS-CN) method. The runoff estimated from the SCS-CN model was then used to know the variation of runoff potential with different
land use/land cover and with different soil conditions.
Keywords: Watershed, Nallur watershed, Surface runoff, Rainfall-Runoff, SCS-CN, Remote Sensing, GIS.
Estimation of morphometric parameters and runoff using rs & gis techniqueseSAT Journals
Abstract
Land and water are the two vital natural resources, the optimal management of these resources with minimum adverse environmental
impact are essential not only for sustainable development but also for human survival. Satellite remote sensing with geographic
information system has a pragmatic approach to map and generate spatial input layers of predicting response behavior and yield of
watershed. Hence, in the present study an attempt has been made to understand the hydrological process of the catchment at the
watershed level by drawing the inferences from moprhometric analysis and runoff. The study area chosen for the present study is
Yagachi catchment situated in Chickamaglur and Hassan district lies geographically at a longitude 75⁰52’08.77”E and
13⁰10’50.77”N latitude. It covers an area of 559.493 Sq.km. Morphometric analysis is carried out to estimate morphometric
parameters at Micro-watershed to understand the hydrological response of the catchment at the Micro-watershed level. Daily runoff
is estimated using USDA SCS curve number model for a period of 10 years from 2001 to 2010. The rainfall runoff relationship of the
study shows there is a positive correlation.
Keywords: morphometric analysis, runoff, remote sensing and GIS, SCS - method
-
Effect of variation of plastic hinge length on the results of non linear anal...eSAT Journals
Abstract The nonlinear Static procedure also well known as pushover analysis is method where in monotonically increasing loads are applied to the structure till the structure is unable to resist any further load. It is a popular tool for seismic performance evaluation of existing and new structures. In literature lot of research has been carried out on conventional pushover analysis and after knowing deficiency efforts have been made to improve it. But actual test results to verify the analytically obtained pushover results are rarely available. It has been found that some amount of variation is always expected to exist in seismic demand prediction of pushover analysis. Initial study is carried out by considering user defined hinge properties and default hinge length. Attempt is being made to assess the variation of pushover analysis results by considering user defined hinge properties and various hinge length formulations available in literature and results compared with experimentally obtained results based on test carried out on a G+2 storied RCC framed structure. For the present study two geometric models viz bare frame and rigid frame model is considered and it is found that the results of pushover analysis are very sensitive to geometric model and hinge length adopted. Keywords: Pushover analysis, Base shear, Displacement, hinge length, moment curvature analysis
Effect of use of recycled materials on indirect tensile strength of asphalt c...eSAT Journals
Abstract
Depletion of natural resources and aggregate quarries for the road construction is a serious problem to procure materials. Hence
recycling or reuse of material is beneficial. On emphasizing development in sustainable construction in the present era, recycling of
asphalt pavements is one of the effective and proven rehabilitation processes. For the laboratory investigations reclaimed asphalt
pavement (RAP) from NH-4 and crumb rubber modified binder (CRMB-55) was used. Foundry waste was used as a replacement to
conventional filler. Laboratory tests were conducted on asphalt concrete mixes with 30, 40, 50, and 60 percent replacement with RAP.
These test results were compared with conventional mixes and asphalt concrete mixes with complete binder extracted RAP
aggregates. Mix design was carried out by Marshall Method. The Marshall Tests indicated highest stability values for asphalt
concrete (AC) mixes with 60% RAP. The optimum binder content (OBC) decreased with increased in RAP in AC mixes. The Indirect
Tensile Strength (ITS) for AC mixes with RAP also was found to be higher when compared to conventional AC mixes at 300C.
Keywords: Reclaimed asphalt pavement, Foundry waste, Recycling, Marshall Stability, Indirect tensile strength.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Comparative study of one and two diode model of solar photovoltaic cell
1. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 03 Issue: 10 | Oct-2014, Available @ http://www.ijret.org 190
COMPARATIVE STUDY OF ONE AND TWO DIODE MODEL OF
SOLAR PHOTOVOLTAIC CELL
Ritesh Dash1
, S.M Ali2
1
PG Scholar, School of Electrical Engineering, KIIT University
2
Asso.Prof. School of Electrical Engineering, KIIT University
Abstract
Modeling of solar cell is a very difficult task. This is because of the non linear behavior of the cell. Different types of modeling for
solar cells are available in the literature. The theme of the modeling is based on the solar radiation and temperature of the system
and environment. Determination of cell parameters like Iph, Is, Rs ,Rsh and ideality factor generally affects the performance of
the solar cell. This paper will basically describe about the one diode model of the solar cell. The initial parameter are evaluated
by generating some random number through a computer program and from the manufacturer data sheet provided by the
manufacturer. The result of the simulation will describe about the performance of two types of model.
Keywords: Solar PV, One diode model, Two diode model
--------------------------------------------------------------------***----------------------------------------------------------------------
1. INTRODUCTION
Shortage of energy drives us to think for some alternate
source of energy. Major portion of energy is usually
extracted from the coal. But from estimation it was found
that the amount of coal available will last for another 30
years. So in this regard harvesting energy from renewable
sources is the only option to adopt. Among the different
renewable sources solar photovoltaic is the leading area of
research. Now days, solar photovoltaic finds its wide
applications in grid connected system as well as off grid
applications. This is because of its availability and easy to
handle and installation. By keeping view on the rapid
growth of the solar industry it seems to be the largest source
of energy producer in the future. Solar photovoltaic
performance depends upon a number of parameters like
altitude, humidity, temperature, solar radiation, shadow,
azimuthal angle, tilt angle and the amount of load connected
to the system. Solar cells are generally connected in series
and parallel connection to increase the rating of the system
and hence increase the efficiency. Despite of all the effort
made to increase the efficiency of the solar cell the
maximum achievable efficiency is only 30 percent and
having maximum life span of 25 years. Another major cause
of lower efficiency is the non linear behavior of the output,
which again depends upon solar radiation. Efficiency of the
solar cell can be increased to a markup value through proper
design and modeling of the cell. Modeling of the cell
depends upon the initial assumption for the system and as
well as the type of the material. The modeling should satisfy
the exact characteristic of the practical solar cell. Again run
time of the model should be reasonable and under control.
Different types of modeling are available like artificial
neural network, particle swarm model, loop control
algorithm and many more. All these methods have some
advantages as well as disadvantages. Artificial neural
network and particle swarm optimization are not suitable
because lots of data are required to process and test the
model. Similarly particle swarm optimization use a number
of data to simulate the system. With increase in parameter,
PSO becomes lengthy and time consuming. Another point
can be made like in ANN training at each node is required.
Further more training requires lots of experiment to train the
node and a regular updating of the node is a time consuming
operation. On the other hand lumped parameter analysis is
quite easy and also efficient one. Different types of lumped
parameter model are their like one diode model, two diode
model. The main problem with this type of model is that
prior to the simulation it is required to solve a number of
equations to find the first initial condition. One diode model
assumes only two parameter i.e. solar radiation and
temperature. However this method neglects the
recombination losses i.e. occurring inside the cell due to
charge carriers. Therefore the maximum efficiency will
occur only in the varying temperature condition. Similarly
under low irradiance condition its accuracy cannot be
determined with one diode model. Therefore two diode
model was developed. The model also suffers from some
problem like it assumes Rsh and Rse before calculating the
modeling parameter.
This paper will describe about different types of modeling of
solar cell with their detailed mathematical derivation. The
last part of the paper will describe about the comparison
between different types of modeling.
2. MODELING OF SOLAR CELL
Different methods of modeling were described in the
literature. Ref[2] has proposed a model based on particle
swarm optimization method with its derived parameter
from hybrid model. Similarly Ref.[3] described about the
modeling of solar cell using matlab simulink model.
.However both the method has assumed a lots of parameter
2. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 03 Issue: 10 | Oct-2014, Available @ http://www.ijret.org 191
like coefficient, Ki, Kv which not only increase the number
of equations but also increases the computation time.
Wolf has proposed a solar cell consisting of a current
source, diode and resistor. Latter on wolf modeling has been
simplified to one diode model system. From the one diode
model of solar cell, the total photogene generated current
(Iph) can be written as
--------- (1)
Where g is the solar radiation, Gstc is the solar radiation
under standard temperature condition , ki is the current
coefficient , t is the temperature and tstc is the temperature
under stc. Similarly the total output current from the solar
cell can be found from –2 as
I=Iph-Id-Ir--------- (2)
Where I is the net output current of the solar cell Iph is the
net photo generated current from the solar cell, Id is the
diode current flowing through the diode and ir is the current
through the resistor. Expanding the current equation with its
internal parameter it becomes
--------- (3)
Where T is the temperature of the solar cell under solar
irradiance and n is the ideality factor of the solar cell. These
equations are quite suitable for for simulating the solar cell
under different constraints. But one of the draw back with
this type of simulation is that it is not suitable under low
irradiance condition. Under this condition the net photo
generation from the solar cell behaves like an open circuit
condition. So under open circuit condition the equation fails
to describe about the recombination process or
recombination losses occurring in the solar cell. Under
varying temperature condition it exhibits non linear dynamic
equation where it is difficult to study the characteristics of
solar cell. the above problem associated with the one diode
model can be eliminated with two diode model . However
the number of equations to be solved for two diode model is
much more as well as tedious to describe. The problem
associated with two diode model simulation is that the run
time for simulation. Thevenin modelling of solar cell is
applied to calculate the parameters. Series and shunt
resistance are included to calculate the performance.
Levenberg function is applied finally on the output result to
study the curve of solar cell. The equation introduced under
this method has a lots of parameter. So iteration method is
applied to find the parameters. The iteration method has a
lots of assumption like initial condition , step size for
iteration and result testing. Choosing the initial condition is
a difficult task . The output of the solar cell is very sensitive
to the initial parameter of the solar cell. The two diode
model of the solar cell has two different method like small
signal analysis and large signal model analysis. The small
signal model consist of only five numbers of parameter
where as large signal analysis consist of seven parameter
model . The initial value for five parameter model consist of
series and shunt resistance where as for seven parameter
analysis only series resistance is required. It is better to
choose one variable rather than two variable. So this paper
will describe the basic equations of different model and an
iterative technique to find the solution.
3. METHODOLOGY
From figure-1 the equation for one diode model becomes
--------- (4)
and from figure-2 the equation for the equation for two
diode model becomes
------ (5)
The difference between the two modelling equation is the
introduction of saturation current . The two diode model
Consist of two saturation current i.e. Is1 and Is2.The two
diode model represents the recombination losses occurring
in the junction of solar cell. If Np is the number of cells
connected in parallel and Ns is the number of cells
connected in series then the current equation becomes
------ (6)
The photo generated current Iph can be found out as follows
-------- (7)
Similarly the saturation current can be written as
-------- (8)
and that of
-------- (9)
Here Is1 and Is2 depends on the temperature and irradiance
Is1 and Is2 can be found out from the Newton's iterative
method. According to Newton's iterative method the
parameters at short circuit current and open circuit voltage
can be found out as
---
---- (10)
3. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 03 Issue: 10 | Oct-2014, Available @ http://www.ijret.org 192
And
------- (11)
In five and seven parameter analysis of solar cell, all the
parameters have a very sensitive effect on the performance
of the solar cell. Among all these parameters ideality factor
have several effect on the performance of cell. It represents
the movement of carriers across the junction of the solar
cell. generally two types of movement are there like
diffusion process and recombination process. if the
movement is diffusion then ideality factor becomes one and
for recombination process the ideality factor is two. Some of
the paper also recommended to take it as 1.5. So it can be
calculated as
-------- (12)
Where Vth represents thermally generated voltage ,Vmp is
the maximum voltage at the output curve, Imp is the
maximum current at the output of MPP. Rso and Rsho
represents series and shunt resistance of the cell respectively
under open circuit condition. Actually this Rso and Rsho acts
as a balancing intermediate parameter between Rs and Rsh
respectively. This reduces the open circuit voltage into as
follows
-------- (13)
So Voc now depend on both Rso and Rs . A very small
change in resistance selection affects the open circuit
voltage. The ohmic loss of a solar cell is determined by the
amount of series and shunt resistance. Series resistance
represents the contact resistance of the system, base
resistance and inter metallic resistance or
Rse=Rb+R1+Rm------------------ (14)
4. RESULT AND DISCUSSION
Solar cell parameters were calculated numerically with the
mathematical equations discussed above. The result of the
model are listed in table-1. The PV characteristic is obtained
under different solar radiation i.e. 800,900 and 1000
watt/m2 respectively. For all the characteristic the ideality
factor is one.
On analyzing the result, there is a very small change in Rse
and photo generated current. However the reverse saturation
current is more in the two diode model and less in one diode
model.
Table-1 Comparision between mathematical and cell
modeling
Parameter Mathematical
Modelling
Cell Modelling
Isc 2.03 2.02
Voc 85.5365 86.8
Im 1.54 1.93
Vm 67.78 70.4
Table-2 Voc and Isc at different solar insolation
Paramete
r
100W/m
2
700W/m
2
800W/m
2
1000W/m
2
Voc 75 84.3 84.92 85.5365
Isc 0.19 1.6 1.82 2.03
Table 1 and 2 represents the simulation result of
mathematical and cell modeling of solar cell. The result
shows that error percentage between the mathematical and
cell modeling is very close to each other and can be adopted
for cell modeling.
Table-3 Comparison between one and two diode modeling
Parameter One diode
modelling
Two diode
modelling
FF 0.6011 0.7749
η 10.4374 13.5868
Rch 44.01 36.47
Rch 42.13 42.57
Fig: 1 Flow chart of the computer programming
4. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 03 Issue: 10 | Oct-2014, Available @ http://www.ijret.org 193
The entire computer program used to calculate the cell
parameters are presented by a flow chart. on comparing
different simulation result the best result was adopted for the
simulation.
50 55 60 65 70 75 80 85
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
Voltage
Current
Fig: 2 V-I Characteristics under 800 W/m2 radiation
50 55 60 65 70 75 80 85
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Voltage
Current
Fig: 3 V-I Characteristics under 900 W/m2 radiation
50 55 60 65 70 75 80 85 90
0
0.5
1
1.5
2
2.5
Voltage
Current
Fig: 4 V-I Characteristics under 1000 W/m2 radiation
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
50
55
60
65
70
75
80
85
90
Time
Voltage
Fig: 5 Output Voltage curve for one diode model
0 1 2 3 4 5 6 7 8 9 10
84.5
85
85.5
86
86.5
87
Time
Voltage
Fig: 6 Output Voltage curve for two diode model
50 55 60 65 70 75 80 85 90
0
20
40
60
80
100
120
140
Voltage
Power
Fig: 7 P-V curve for one diode model
Figure 5 and 6 represents the output voltage of the one and
two diode model of the solar cell with respect to time. The
voltage for the two simulation was very much close to each
other how ever the voltage profile of two diode model
slightly small and the transient for the two diode model was
also not there. This is because of the system loss in the
series and shunt resistance.
5. IJRET: International Journal of Research in Engineering and Technology eISSN: 2319-1163 | pISSN: 2321-7308
_______________________________________________________________________________________
Volume: 03 Issue: 10 | Oct-2014, Available @ http://www.ijret.org 194
5. CONCLUSION
This work describes a new way of calculating the solar cell
parameters. At first the numerical equations were solved to
calculate the model for solar cell. The non linear equations
involved in the modeling were represented by suitable block
diagram in the matlab. The proposed method shown above
can be used for calculating the parameters involved in the
solar cell. The more précised analysis can be applied to real
and practical system. The drawback involved in this type
modeling is to solve a number of non linear equations. This
in turn increases the execution time of the system.
ACKNOWLEDGEMENTS
We would like to thank the school of electrical engineering
for providing us the necessary set up for successful
completion of this research work.
REFERENCE
[1] F. Ghani, G. Rosengarten, M. Duke, J.K. Carson,
The numerical calculation of single-diode solar-cell
modelling parameters, Renewable Energy, Volume
72, December 2014, Pages 105-112, ISSN 0960-
1481
[2] Otwin Breitenstein, An Alternative One-diode
Model for Illuminated Solar Cells, Energy
Procedia, Volume 55, 2014, Pages 30-37, ISSN
1876-6102
[3] F. Ghani, M. Duke, Numerical determination of
parasitic resistances of a solar cell using the
Lambert W-function, Solar Energy, Volume 85,
Issue 9, September 2011, Pages 2386-2394, ISSN
0038-092X
[4] Wook Kim, Woojin Choi, A novel parameter
extraction method for the one-diode solar cell
model, Solar Energy, Volume 84, Issue 6, June
2010, Pages 1008-1019, ISSN 0038-092X
[5] Kashif Ishaque, Zainal Salam, Hamed Taheri, Amir
Shamsudin, A critical evaluation of EA
computational methods for Photovoltaic cell
parameter extraction based on two diode model,
Solar Energy, Volume 85, Issue 9, September
2011, Pages 1768-1779, ISSN 0038-092X
[6] M. Chegaar, G. Azzouzi, P. Mialhe, Simple
parameter extraction method for illuminated solar
cells, Solid-State Electronics, Volume 50, Issues 7–
8, July–August 2006, Pages 1234-1237, ISSN
0038-1101
[7] Adelmo Ortiz-Conde, Francisco J. García Sánchez,
Juan Muci, New method to extract the model
parameters of solar cells from the explicit analytic
solutions of their illuminated I–V characteristics,
Solar Energy Materials and Solar Cells, Volume
90, Issue 3, 15 February 2006, Pages 352-361,
ISSN 0927-0248
[8] W. De Soto, S.A. Klein, W.A. Beckman,
Improvement and validation of a model for
photovoltaic array performance, Solar Energy,
Volume 80, Issue 1, January 2006, Pages 78-88,
ISSN 0038-092X
[9] M. Glatthaar, M. Riede, N. Keegan, K. Sylvester-
Hvid, B. Zimmermann, M. Niggemann, A. Hinsch,
A. Gombert, Efficiency limiting factors of organic
bulk heterojunction solar cells identified by
electrical impedance spectroscopy, Solar Energy
Materials and Solar Cells, Volume 91, Issue 5, 6
March 2007, Pages 390-393, ISSN 0927-0248
[10] C. Carrero, J. Rodríguez, D. Ramírez, C. Platero,
Simple estimation of PV modules loss resistances
for low error modelling, Renewable Energy,
Volume 35, Issue 5, May 2010, Pages 1103-1108,
ISSN 0960-1481
[11] C. Carrero, D. Ramírez, J. Rodríguez, C.A. Platero,
Accurate and fast convergence method for
parameter estimation of PV generators based on
three main points of the I–V curve, Renewable
Energy, Volume 36, Issue 11, November 2011,
Pages 2972-2977, ISSN 0960-1481
[12] Hassan Fathabadi, Lambert W function-based
technique for tracking the maximum power point of
PV modules connected in various configurations,
Renewable Energy, Volume 74, February 2015,
Pages 214-226, ISSN 0960-1481
[13] Pankaj Yadav, Brijesh Tripathi, Kavita Pandey,
Manoj Kumar, Effect of varying concentration and
temperature on steady and dynamic parameters of
low concentration photovoltaic energy system,
International Journal of Electrical Power & Energy
Systems, Volume 61, October 2014, Pages 101-
110, ISSN 0142-0615
[14] ankaj Yadav, Brijesh Tripathi, Makarand
Lokhande, Manoj Kumar, Estimation of steady
state and dynamic parameters of low concentration
photovoltaic system, Solar Energy Materials and
Solar Cells, Volume 112, May 2013, Pages 65-72,
ISSN 0927-0248
BIOGRAPHIES
Ritesh Dash is a research scholar of power
and energy system at KIIT university in the
school of Electrical Engg. He has
published more than 20 no. of papers both
in journal and conferences. His research
area includes Solar PV, Hybrid system, power system
transient analysis.
Dr S M Ali is Associate Professor in
Electrical Engineering of KIIT University
Bhubaneswar. He received his DSc &
Ph.D. in Electrical Engineering from
International university, California, USA in
2008 & 2006 respectively. His area of research in the field
of Renewable Energy both Solar & Wind Energy. He has
also presented more than 50 papers in different National &
International conferences in the field of Renewable Energy
apart from around 20 nos of paper also published in
National and International journals.