This document presents a design and simulation of a boost converter with input ripple cancellation for applications like fuel cells. It proposes a boost converter with a tapped inductor and ripple cancellation network (RCN) consisting of a small inductor and capacitor. This helps reduce input current ripples compared to a conventional boost converter. The RCN achieves input ripple cancellation by having its inductor current increase as the main inductor current decreases and vice versa. Simulation results show the proposed converter has lower input current ripple while maintaining output voltage regulation through a closed loop controller.
A Novel Approach of Position Estimation and Power Factor Corrector Converter ...IJPEDS-IAES
This paper proposes a Power factor Corrected (PFC) Bridgeless Buck-Boost converter fed BLDC motor drive. The Bridgeless configuration eliminates the Diode Bridge Rectifier in order to reduce the number of components and the conduction loss. The position sensors used in BLDC drives have drawbacks of additional cost, mechanical alignment problems. These bottle necks results in sensorless technique. The Sensorless technique mostly relies on measurement of Back EMF to determine relative positions of stator and rotor for the correct coil energising sequence can be implemented. This paper introduces the offline Finite Element method for sensorless operation. The proposed sensorless scheme estimates the motor position at standstill and running condition. The obtained Power Factor is within the acceptable limits IEC 61000-3-2. The proposed drive is simulated in MATLAB/Simulink the obtained results are validated experimentally on a developed prototype of the drive.
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.
IEEE 2015-15 Power Electronics and Power System Project titles for ME and BE Students,Bangalore.power electronics and power system projects in bangalore.
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
A Novel Approach of Position Estimation and Power Factor Corrector Converter ...IJPEDS-IAES
This paper proposes a Power factor Corrected (PFC) Bridgeless Buck-Boost converter fed BLDC motor drive. The Bridgeless configuration eliminates the Diode Bridge Rectifier in order to reduce the number of components and the conduction loss. The position sensors used in BLDC drives have drawbacks of additional cost, mechanical alignment problems. These bottle necks results in sensorless technique. The Sensorless technique mostly relies on measurement of Back EMF to determine relative positions of stator and rotor for the correct coil energising sequence can be implemented. This paper introduces the offline Finite Element method for sensorless operation. The proposed sensorless scheme estimates the motor position at standstill and running condition. The obtained Power Factor is within the acceptable limits IEC 61000-3-2. The proposed drive is simulated in MATLAB/Simulink the obtained results are validated experimentally on a developed prototype of the drive.
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.
IEEE 2015-15 Power Electronics and Power System Project titles for ME and BE Students,Bangalore.power electronics and power system projects in bangalore.
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
A Low Cost Single-Switch Bridgeless Boost PFC ConverterIJPEDS-IAES
This paper proposes the single-switch bridgeless boost power factor correction (PFC) converter to achieve high efficiency in low cost. The proposed converter utilizes only one active switching device forPFC operation as well as expecting higher efficiency than typical boost PFC converters. On the other hand, the implementation cost is less than traditional bridgeless boost PFC converters, in where two active switching deivces are necessary. The operational principle, the modeling, and the control scheme of the proposed converter arediscussed in detail. In order to verify the operation of the proposed converter, a 500W switching model is built in PSIM software package. The simulation results show that the proposed converter perfectly achieves PFC operation with only a single active switch.
IMPLEMENTATION OF DISCONTINUOUS INDUCTOR CURRENT MODE IN CUK CONVERTERS FED B...Journal For Research
This paper presents a bridgeless Cuk converter-fed brushless DC (BLDC) motor drive. A Bridgeless Cuk converter is constructed to operate at discontinuous inductor current mode to improve the quality of power and power factor at the AC mains for better speed control. The bridgeless converter is designed for obtaining the low conduction losses and requirement of low size of heat sink for the switches. TI-TMS320-F2812-based Digital Signal Processor (DSP) is used for the development of the hardware prototype of proposed BLDC motor drive.
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.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
SIMULATION ANALYSIS OF CLOSED LOOP DUAL INDUCTOR CURRENT-FED PUSH-PULL CONVER...Journal For Research
The current electronic devices require DC power source, which is taken from a battery or DC power supply. DC-DC converter is utilized to get regulated dc voltage from unregulated one. Switched mode power supply (SMPS) are commonly used in industrial applications, because of more advantages compared to linear power supply. In SMPS we have isolated and non-isolated converters, where isolated converters are frequently used, in order to get more voltage with multiple outputs. So among different isolated converters, push-pull converter is chosen for micro converter applications to obtain high voltage conversion ratio by using HF transformer, due to their better utilization of transformer. New methodology of control is implemented for making ZVS and ZCS at same time and to reduce the number of switches in the secondary side of dual inductor CFPP converter, which is a voltage doubler circuit. This becomes the solution for problem identification. Thus this converter with soft-switching reduces the switching losses.The current-fed push-pull converters are used in many applications like photo-voltaic (PV) power converters for boosting the output voltage. Push-pull converter is chosen for micro converter applications, to obtain high voltage conversion ratio by using high frequency (HF) transformer, due to their better utilization of transformer. This deals with the design of dual inductor CFPP converter, where zero voltage switching (ZVS) and zero current switching (ZCS) is achieved for the primary side of the converter by using secondary switches. Primary side switches are controlled by closed loop control topology. The secondary side is made with voltage doubler to obtain high voltage. Open loop and closed loop control of dual inductor current fed push pull converter simulation is finished by MATLAB/SIMULINK and their outcomes are analyzed.
AN ACTIVE PFC WITH FLYBACK DESIGN FOR INTELLIGENCE IN STREET LIGHT APPLICATIONJournal For Research
As the requirement of energy demand is increasing due to rapid industrial development, it is necessary to meet the growing demand of energy. This can be achieved in two ways: find alternate resource to supply power or energy; or reduce the energy consumption of present resources available. The proposed work is basically the design and implementation of an intelligent street light of 50 W power output from the offline converter by using power LED. As power LED draws huge non sinusoidal current due to the presence of AC-DC converter, a Boost PFC and a fly back converter is used for better power factor and for dc voltage regulation. Along with this a PIR sensor and LDR sensors are also used. A PIC microcontroller is used for PWM dimming. This makes to reduce the power consumption in street light especially in urban cities in which most of the power is wasted in lighting streets during late night.
Fuzzy Logic Controller Based High Frequency Link AC-AC Converter For Voltage ...IJTET Journal
Abstract—In this paper, an advanced high frequency link AC-AC Push-pull cycloconverter for the voltage compensation is proposed in order to maintain the power quality in electric grid. The proposed methodology can be achieve arbitrary output voltage without using large energy storage elements. So that the system is more steadfast and less costly compared with the conventional inverter topology. Additionally, the proposed converter does not contain any line frequency transformer, which reduces the cost further. The control scheme for the push pull cycloconverter employs the fuzzy logic controller based sinusoidal pulse width modulation (SPWM) to accomplish better performance on voltage compensation, like unbalanced voltage harmonics elimination. The simulation results are given to show the effectiveness of the proposed high frequency link AC-AC converter and fuzzy logic controller based SPWM technology
Now day’s the power factor has become a major problem in power system to improve the power quality of the grid, as power factor is affected on the grid due to the nonlinear loads connected to it. Single phase bridgeless AC/DC power factor correction (PFC) topology to improve the power factor as well as the total harmonic distortion (THD) of the utility grid is proposed. By removing the input bridge in conventional PFC converters, the control circuit is simplified; the total harmonics distortion (THD) and power factor (PF) are improved. The PI controller operates in two loops one is the outer control loop which calculates the reference current through LC filter and signal processing. Inner current loop generates PWM switching signals through the PI controller. The output of the proposed PFC topology is verified for prototype using MATLAB circuit simulations. The experimental system is developed, and the simulation results are obtained.
Review of Integrated Power Factor Correction (PFC) Boost converter topologies...IJARBEST JOURNAL
This paper provides a review of various Power Factor Correction (PFC) boost
converter topologies suitable for telecoms. A novel integrated PFC topology is proposed which acts
as a backup power supply for telecommunication systems. The advantage of the proposed circuit is
that it operates based on soft switching principle thereby reducing the switching losses in the
converter. The topologies analyzed in this paper are conventional average current mode control
boost PFC, bridgeless boost PFC, semi-bridgeless boost PFC, totem-pole bridgeless boost PFC and
proposed integrated boost PFC. All these topology studies are investigated by carrying out the
simulation of the converter circuits using PSIM software. A detailed comparison of all the
topologies have been done and they are compared in terms of supply power factor, supply current
THD and displacement factor. From the results, it is inferred that the proposed integrated PFC
provides a reduced supply current THD and improved power factor. The results are validated.
IOSR Journal of Electrical and Electronics Engineering(IOSR-JEEE) is an open access international journal that provides rapid publication (within a month) of articles in all areas of electrical and electronics engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electrical and electronics engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
A three level quasi-two-stage single-phase pfc converter with flexible output...LeMeniz Infotech
A three level quasi-two-stage single-phase pfc converter with flexible output voltage and improved conversion efficiency
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Modified Bidirectional Converter with Current Fed InverterIJPEDS-IAES
A bidirectional dc-dc converter with multiple outputs are concatenated with a
high frequency current source parallel resonant push pull inverter is
presented in this paper. The two outputs are added together and it is taken as
the input source for the inverter. The current source parallel resonant push
pull inverter implemented here with high frequency applications like
induction heating, Fluorescent lighting, Digital signal processing sonar. This
paper proposes a simple photovoltaic power system consists of a
bidirectional converter and a current fed inverter for regulating the load
variations. Solar power is used as the input source for the system. Simulation
of the proposed system is carried out in PSIM software and experimentally
verified the results.
A Low Cost Single-Switch Bridgeless Boost PFC ConverterIJPEDS-IAES
This paper proposes the single-switch bridgeless boost power factor correction (PFC) converter to achieve high efficiency in low cost. The proposed converter utilizes only one active switching device forPFC operation as well as expecting higher efficiency than typical boost PFC converters. On the other hand, the implementation cost is less than traditional bridgeless boost PFC converters, in where two active switching deivces are necessary. The operational principle, the modeling, and the control scheme of the proposed converter arediscussed in detail. In order to verify the operation of the proposed converter, a 500W switching model is built in PSIM software package. The simulation results show that the proposed converter perfectly achieves PFC operation with only a single active switch.
IMPLEMENTATION OF DISCONTINUOUS INDUCTOR CURRENT MODE IN CUK CONVERTERS FED B...Journal For Research
This paper presents a bridgeless Cuk converter-fed brushless DC (BLDC) motor drive. A Bridgeless Cuk converter is constructed to operate at discontinuous inductor current mode to improve the quality of power and power factor at the AC mains for better speed control. The bridgeless converter is designed for obtaining the low conduction losses and requirement of low size of heat sink for the switches. TI-TMS320-F2812-based Digital Signal Processor (DSP) is used for the development of the hardware prototype of proposed BLDC motor drive.
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.
Welcome to International Journal of Engineering Research and Development (IJERD)IJERD Editor
journal publishing, how to publish research paper, Call For research paper, international journal, publishing a paper, IJERD, journal of science and technology, how to get a research paper published, publishing a paper, publishing of journal, publishing of research paper, reserach and review articles, IJERD Journal, How to publish your research paper, publish research paper, open access engineering journal, Engineering journal, Mathemetics journal, Physics journal, Chemistry journal, Computer Engineering, Computer Science journal, how to submit your paper, peer reviw journal, indexed journal, reserach and review articles, engineering journal, www.ijerd.com, research journals,
yahoo journals, bing journals, International Journal of Engineering Research and Development, google journals, hard copy of journal
SIMULATION ANALYSIS OF CLOSED LOOP DUAL INDUCTOR CURRENT-FED PUSH-PULL CONVER...Journal For Research
The current electronic devices require DC power source, which is taken from a battery or DC power supply. DC-DC converter is utilized to get regulated dc voltage from unregulated one. Switched mode power supply (SMPS) are commonly used in industrial applications, because of more advantages compared to linear power supply. In SMPS we have isolated and non-isolated converters, where isolated converters are frequently used, in order to get more voltage with multiple outputs. So among different isolated converters, push-pull converter is chosen for micro converter applications to obtain high voltage conversion ratio by using HF transformer, due to their better utilization of transformer. New methodology of control is implemented for making ZVS and ZCS at same time and to reduce the number of switches in the secondary side of dual inductor CFPP converter, which is a voltage doubler circuit. This becomes the solution for problem identification. Thus this converter with soft-switching reduces the switching losses.The current-fed push-pull converters are used in many applications like photo-voltaic (PV) power converters for boosting the output voltage. Push-pull converter is chosen for micro converter applications, to obtain high voltage conversion ratio by using high frequency (HF) transformer, due to their better utilization of transformer. This deals with the design of dual inductor CFPP converter, where zero voltage switching (ZVS) and zero current switching (ZCS) is achieved for the primary side of the converter by using secondary switches. Primary side switches are controlled by closed loop control topology. The secondary side is made with voltage doubler to obtain high voltage. Open loop and closed loop control of dual inductor current fed push pull converter simulation is finished by MATLAB/SIMULINK and their outcomes are analyzed.
AN ACTIVE PFC WITH FLYBACK DESIGN FOR INTELLIGENCE IN STREET LIGHT APPLICATIONJournal For Research
As the requirement of energy demand is increasing due to rapid industrial development, it is necessary to meet the growing demand of energy. This can be achieved in two ways: find alternate resource to supply power or energy; or reduce the energy consumption of present resources available. The proposed work is basically the design and implementation of an intelligent street light of 50 W power output from the offline converter by using power LED. As power LED draws huge non sinusoidal current due to the presence of AC-DC converter, a Boost PFC and a fly back converter is used for better power factor and for dc voltage regulation. Along with this a PIR sensor and LDR sensors are also used. A PIC microcontroller is used for PWM dimming. This makes to reduce the power consumption in street light especially in urban cities in which most of the power is wasted in lighting streets during late night.
Fuzzy Logic Controller Based High Frequency Link AC-AC Converter For Voltage ...IJTET Journal
Abstract—In this paper, an advanced high frequency link AC-AC Push-pull cycloconverter for the voltage compensation is proposed in order to maintain the power quality in electric grid. The proposed methodology can be achieve arbitrary output voltage without using large energy storage elements. So that the system is more steadfast and less costly compared with the conventional inverter topology. Additionally, the proposed converter does not contain any line frequency transformer, which reduces the cost further. The control scheme for the push pull cycloconverter employs the fuzzy logic controller based sinusoidal pulse width modulation (SPWM) to accomplish better performance on voltage compensation, like unbalanced voltage harmonics elimination. The simulation results are given to show the effectiveness of the proposed high frequency link AC-AC converter and fuzzy logic controller based SPWM technology
Now day’s the power factor has become a major problem in power system to improve the power quality of the grid, as power factor is affected on the grid due to the nonlinear loads connected to it. Single phase bridgeless AC/DC power factor correction (PFC) topology to improve the power factor as well as the total harmonic distortion (THD) of the utility grid is proposed. By removing the input bridge in conventional PFC converters, the control circuit is simplified; the total harmonics distortion (THD) and power factor (PF) are improved. The PI controller operates in two loops one is the outer control loop which calculates the reference current through LC filter and signal processing. Inner current loop generates PWM switching signals through the PI controller. The output of the proposed PFC topology is verified for prototype using MATLAB circuit simulations. The experimental system is developed, and the simulation results are obtained.
Review of Integrated Power Factor Correction (PFC) Boost converter topologies...IJARBEST JOURNAL
This paper provides a review of various Power Factor Correction (PFC) boost
converter topologies suitable for telecoms. A novel integrated PFC topology is proposed which acts
as a backup power supply for telecommunication systems. The advantage of the proposed circuit is
that it operates based on soft switching principle thereby reducing the switching losses in the
converter. The topologies analyzed in this paper are conventional average current mode control
boost PFC, bridgeless boost PFC, semi-bridgeless boost PFC, totem-pole bridgeless boost PFC and
proposed integrated boost PFC. All these topology studies are investigated by carrying out the
simulation of the converter circuits using PSIM software. A detailed comparison of all the
topologies have been done and they are compared in terms of supply power factor, supply current
THD and displacement factor. From the results, it is inferred that the proposed integrated PFC
provides a reduced supply current THD and improved power factor. The results are validated.
IOSR Journal of Electrical and Electronics Engineering(IOSR-JEEE) is an open access international journal that provides rapid publication (within a month) of articles in all areas of electrical and electronics engineering and its applications. The journal welcomes publications of high quality papers on theoretical developments and practical applications in electrical and electronics engineering. Original research papers, state-of-the-art reviews, and high quality technical notes are invited for publications.
International Journal of Engineering and Science Invention (IJESI)inventionjournals
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
A three level quasi-two-stage single-phase pfc converter with flexible output...LeMeniz Infotech
A three level quasi-two-stage single-phase pfc converter with flexible output voltage and improved conversion efficiency
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
Modified Bidirectional Converter with Current Fed InverterIJPEDS-IAES
A bidirectional dc-dc converter with multiple outputs are concatenated with a
high frequency current source parallel resonant push pull inverter is
presented in this paper. The two outputs are added together and it is taken as
the input source for the inverter. The current source parallel resonant push
pull inverter implemented here with high frequency applications like
induction heating, Fluorescent lighting, Digital signal processing sonar. This
paper proposes a simple photovoltaic power system consists of a
bidirectional converter and a current fed inverter for regulating the load
variations. Solar power is used as the input source for the system. Simulation
of the proposed system is carried out in PSIM software and experimentally
verified the results.
Design of an Integrated Power Factor Converter with PI Controller for Low Pow...IOSRJEEE
In this paper, an integrated power factor converter with PI controller is proposed. The circuit topology is obtained by integrating two converters namely the buck converter and a boost converter. The boost converter is normally a step up converter which obtain an unity power factor and performs low harmonics at the input. Based on the simple circuit topology and easy control the boost converter or buck-boost converter is used as power factor correctors. Similarly the buck converter regulates the dc-link voltage and provide a stable dc output voltage. To achieve unity power factor, the output voltage of both converter should be higher than the amplitude of the ac line voltage. The steady -state analysis is developed and a design is provided
International Journal of Engineering Research and Applications (IJERA) aims to cover the latest outstanding developments in the field of all Engineering Technologies & science.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
In order to meet the increase in energy demand globally it is necessary to harness renewable energy at its maximum potential for the purpose of electric power generation. For the achievement of high output voltage and efficiency DC-DC converters plays a vital role in low voltage PV array and fuel cells. LUO converters are gaining importance because of geometric progression output. . LUO converters find its application because of high transient performance of the system, high power transfer gain, efficiency and reduced ripple .Because of load and line disturbances the output voltage of DC-DC converter must be operated in closed loop mode. This paper interpolates multitudinous controller for positive output elementary super lift LUO converter (POESLL). The pursuance of the converter under manifold such as variation in input, load are developed and compared for current mode controller and SMC.
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
A High Step Up Hybrid Switch Converter Connected With PV Array For High Volt...ijitjournal
T
his paper
presents
a
ste
p up DC
-
to
-
DC converter with
hybrid switch capacitor technique having
high
voltage conversion ratio with small
switch voltage stress
. The converter is suitable for the applications
where high voltage conversion is required. The proposed
DC
-
DC converter
has low voltage ratted
MOSFET switch and is connected to PV array to get high output voltage at small duty ratios.
Hence it has
high efficiency.
The principles of operations and the theoretical analysis are presented in this paper.
All the
simulations are
done in MATLAB
-
SIMULINK Environment and
results were obtained with voltage
conversion ratio of 4.
An Efficient High Gain DC-DC Converter for Automotive ApplicationsIJPEDS-IAES
This paper presents a high gain DC-DC converter which uses a clamp circuit
to achieve soft switching. The proposed converter is designed to supply a
high intensity discharge (HID) lamp used in automobile head lamps. The
converter operates from a 12V input supply and provides an output voltage
of 120V at 35W output power. A clamp circuit consisting of a clamp
capacitor, clamp switch and resonant inductor will help to achieve zero
voltage switching (ZVS) of the both main and clamp switches. The practical
performance of the converter was validated through experimental results.
Results obtained from the prototype hardware prove that the converter meets
the requirements of HID lamp application and can be a very good alternative
to existing converters.
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.
Design of Half Bridge LLC Resonant Converter for Low Voltage Dc ApplicationsIOSRJEEE
An advanced hybrid LLC series resonant converter with united flying-capacitor cell is proposed in this paper to permit the high step-down conversion in the high input voltage applications. The in-built flyingcapacitor branch in the primary side can efficiently share out the primary switch voltage stress related with the half-bridge LLC converters. And the input voltage can be shared correspondingly and automatically between the two series half-bridge components lacking additional balance circuit or control strategies owing to the built-in flying- capacitor cell. Likewise, the inherent soft switching performance in extensive load range that exists in the LLC converters is still kept to decrease the switching losses, which ensures the high efficiency. In addition, the proposed converter can be comprehensive to reduce the switch voltage stress byemploying stacked connection. Finally, a 500∼640 Vinput 48 Voutput 1 kW prototype is built and tested to verify the efficiency of the proposed converter. The results prove that the proposed converter is an excellent candidate for the high input voltage and high step-down dc/dc conversion systems.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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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.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
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.
2. In this paper, a closed loop step up converter with low input
current ripple for fuel cell system application is presented. The
block diagram of proposed converter consisting of boost
converter with tapped inductor ripple cancellation network and
closed loop system with PI controller is shown in fig. 2In the
proposed circuit, a ripple cancellation network consisting of a
small capacitor and inductor with tapped inductor is used.
Tapped inductor can be realized by adding extra tap to the
main inductor. Since the capacitor and inductor in RCN do not
need to handle main power as the conventional LC input filter,
size and weight of proposed converter are relatively small
comparing the CBC with the input LC filter. Also better
voltage regulation is achieved by the closed loop control of
boost converter. DC voltage regulation is achieved through
settling the PWM (Pulse Width Modulation)at certain
frequencies and switching devices using MOSFET or IGBT,
and by regulating the duty cycle. The operating principle and
theoretical analysis of proposed circuit is explained in later
sections.
II. PROPOSED CLOSED LOOP BOOST CONVERTER
A. Schematic diagram
Schematic of proposed closed loop boost converter with
ripple cancellation network is shown in fig.3.The inductors
Lpand Ls form the tapped inductor which is realized by
shorting two terminals of the transformer and the ripple
cancellation network comprises inductor Lrand capacitor Cr.
DC voltage regulation is achieved by the control circuit with
two PI controllers
Yin
Co
Ro
PI +2::)---4
1l
>
Fig.3. Schematic of closed loop boost converter with RCN
Tapped inductor with RCN in the proposed circuit can be
replaced by three equivalent non coupled inductor based on
kirchoff circuit law. The element representation of tapped
inductorLp,Ls and its equivalent non coupled inductor L11,L22
is shown in fig.4. The inductance can be represented as follows
(I)
b
(a) (b)
a Lll L22
b
�
(c)
Fig.4. Element representation (a) inductor (b) tapped inductor
(c) non coupled inductor
B. Modes ofoperation
The proposed converter has two stages in one operational
period, and the corresponding equivalent circuit and key
wavefonns for each operational stage are shown in figure
Cr
D
OFF
Co
ON
(a)
Cr
Co
OFF
(b)
Fig. 5.Equivalent circuit during one switching cycle (a)
Mode I[to - t1l (b) Mode 2[t1 - t2l
Mode l[to - td
The switch S is ONat to. Current through inductor L11 and
L22 increases linearly with different slopes. Output diode
remains OFF with the voltage stress equivalent to the output
voltage. The current through the ripple cancellation network
decreases linearly in order to achieve input current ripple
cancellation of proposed converter.
Ro
Ro
L = + +2M = +
3. The differential equation of proposed converter during on
state can be expressed as
L
di1-0n +-L
di2-on
-v:.
11 dt 22 dt
-
m
L
di1-on -L
di3-on
-v: v: v:
11 ----;;t + 33 ----;;t - in- Cr- 0
Mode 2[tl - t2l
(2)
(3)
Switch S is turn OFF at tb both inductors L11 and L22 start
to transfer their energy to the load Ro, so the inductor currents
i1 and i2 decreases linearly. The voltage stresses across switch
S are equal to the output voltage. The current through the RCN
increases linearly in order to achieve input ripple cancellation
in this mode.
The differential equation of proposed converter during off
state can be expressed as
L
di1-offf +-L
di2-off
=
v:. - v:
11 dt 22 dt m 0
di1-off di3-off
L11 -d-t- +-L33 -
d
- t - =
Vin- VCr-Va
(4)
(5)
The input current ripple LJlin of the proposed boost
converter with RCN can be expressed as
(6)
Under same operating condition, the current ripple of
conventional boost converter can be expressed as
(7)
Output voltage of proposed converter is same as that of
CBC and is given as
v:
- Vin
o
-l-D
(8)
The current ripple ratio of boost converter is as follows
(9)
Fig. 6. Key waveforms of proposed converter
The voltage gain of boost converter can be expressed as the
ratio of output voltage to the input voltage.
C. Control circuit statergy
In this a voltage sensor is used to sense output voltage and the
error signal obtained due to difference of output voltage and
reference voltage is given to PI controller.
To control over steady state and to improve the settling time
and overshoot on output voltage of boost converter, and also
to keep the boost converter output voltage to be constant,
despite the variation of load and input voltage, the
combination of P and I controller can be used. Coefficients of
P and I aim to accelerate respond of the system and eliminate
the offset. PI controller output is the sum of proportional and
integral controller output.
The controller output is given by
Kpe(t)+ Ki J e(t)dt (10)
Where e(t) is the error or deviation of actual measured value
from the set point, integral gain Ki = Kp.
T
The corrected signal is compared with a triangular pulse. The
output signal obtained from comparator is used to control the
switch S.
Ill. DESIGN PROCEDURE
A. Spec!fications 0.[proposed converter
Table 1 :Specifiations of proposed converter
PARAMETER DESCRIPTION
Vin Input voltage
Va Output voltage
is Switching
frequency
Po System capacity
Np:Ns Turns ratio
K Coupling
coefficient
B. Design ofL11, L22, L33
VALUES
36V
200V
100KHz
500W
2:3
0.7
For the boost converter in this paper, the maximum
average input current lin-max = 13.88A and the duty
ratio is 0.82.
V· DT
Tapped inductor, Lp'='� 53!lH
Lin
(II)
(12)
Mutual inductance, M = I<...[f;r:; = 55.65!lH (13)
Total inductance, L = Lp + Ls + 2M =283.55!lH (14)
The inductor Lr in the ripple cancellation network
should be equal to mutual inductor M inorder to achieve
input ripple cancellation.
(15)
= DT
4. The non coupled inductorL11= Lp+M, L22= Ls+M, L33=
Lr-M
C. Design ofCo andCr
The value of Co is designed so that the output voltage
ripples can be reduced. For the output voltage ripple L'lV of
0.4%,
So, Co = 4hlF
The value of capacitor, Cr can be expressed as
C
dVCr ..
rdt=-13
36
Table 2: component values
PARAMETER
Inductor L11
Inductor L22
Inductor L33
Auxiliary capacitor
Cr
Output capacitor Co
11 � 13.31747 283.55e.6
L
VALUE
108f.1H
175f.1H
0.25f.1H
3.3f.1F
47f.1F
(16)
(17)
Fig.7. Simulation diagram of conventional boost converter
C9 O.2SU 3_3u
Vo=199.40383
Fig.8. Simulation diagram of boost converter with RCN
Vo
"
PI 1------"(
Fig.9. Simulation diagram of closed loop boost
converter with RCN
IV. STMULATTON RESULTS
Three 36V to 200V converter (fig.7, fig.8, fig.9) with
output power rating 500W are simulated using PSIM and
specifications of the three converters are shown in table 2. The
waveform of input current ripple of CBC and proposed boost
converter is shown in fig. 10.In the simulation, input current
ripple of CBC is about 1.04A while in case of boost converter
with RCN input current ripples are reduced to 50mA.
Fig. 10. Waveform of gate pulses, input current ripple of
CBC and proposed boost converter
5. The current waveform through ripple cancellation network
of proposed converter is shown in fig. II. The peak to peak
value of this current waveform is about 0.85A . The diode
current waveforms of above three converters areshown in
fig.12and fig. l3.The diode current stress of boost converter
with RCN isl4.48Awhich is slightly higher than the current
stress of CBC of 14.37A. But in case of proposed closed loop
boost converter with RCN diode current stress is reduced by a
value of 13.72A. The input current ripple and current ripple
ratio of CBC and proposed converter is listed in table 3.
. . . . . . "
................. " . . . ...... 1'.." ....... . . . . ."'.... .
I J "
,,/
Fig. II Current waveform of ripple cancellation network
Fig.12 Diode current waveform of CBC and boost
converter with RCN
::::::::: ::: :::::::::::: ::: :::::::::'.
·�,LdJ����
Fig.l3 Diode current waveform of closed loop boost
converter with RCN
Table 3:Values of current ripple
PARAMETERS CONVENTIONAL BOOST
BOOST CONVERTER
CONVERTER WlTHRCN
Input current IA 0.05A
ripple
Current ripple 7.2% 0.36%
ratio
A comparative study of open loop system (fig.8) and closed
loop system (fig.9) is analyzed by varying input voltage
between 22V and 48V. The output waveforms of open loop
and closed loop boost converter with RCN are respectively
shown in fig.14and fig.15.
Fig. 140utput voltage of open loop system (Vin =
36V, Va = 200V, Po = 200W)
In case of open loop system, the average output voltage to
input variation is 178.79 and the average error is 21% (table 4)
whereas for closed loop system it is 200.54 and 0.335% (table
5) respectively.
Table 4: Open loop control
Vin Vref Va Absolute
error
22V 200V 115.78V 42%
26V 200V 136.83V 31.58%
28V 200V 147.36V 26.32%
32V 200V 168V 15.795%
34V 200V 178.9V 10.55%
36V 200V 199.9V 0.005%
44V 200V 231.56V 15.78%
48V 200V 252V 26%
Fig. 15. Output voltage of closed loop system(Vin =
36V, Va = 200V, Po = 200W)
6. Vin
22V
26V
28V
32V
34V
36V
44V
48V
Table 5: Closed loop control
Vref Va
200V 199.2V
200V 200.48V
200V 201V
200V 200.78V
200V 200.59V
200V 200.5V
200V 200.8V
200V 201V
V. CONCLUSION
Absolute
error
0.4%
0.24%
0.505%
0.09%
0.295%
0.25%
0.4%
0.5%
The boost converter with input current ripple reduction is
achieved by RCN including a small capacitor and inductor. The
simulation results show that current ripples are reduced to 95%
in the proposed converter. Thus a near zero ripple current is
achieved at the input side of the converter which improves fuel
cell stack life cycle that leads to the application of low input
current ripple. Also closed loop control of boost converter
provides a better voltage regulation than open loop control.
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