The document summarizes a study on using a high step-up zeta converter fed by a solar PV panel for a DC drive application. Key points:
- A zeta converter with a coupled inductor and capacitor multiplier is used to achieve high step-up voltage conversion from a 15-40V solar PV panel input.
- Steady-state analysis of the converter in continuous conduction mode shows it can achieve a voltage gain of (1+n) where n is the turns ratio of the coupled inductor.
- Simulation results using Matlab/Simulink validate the converter design and show it can provide the required output voltage for a DC drive from the solar PV input with high efficiency for resist
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.
This paper presents a step 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 4.9.
Transformer less Boost Converter Topologies with Improved Voltage Gain Operat...IJMER
In this project, a new step up converter proposed in a recent work is analyzed, designed, simulated with MATLAB Simulink. Conventional dc–dc boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors. This paper proposes transformer less dc–dc converters to achieve high step-up voltage gain without an extremely high duty ratio. In the proposed converters, two inductors with the same level of inductance are charged in parallel during the switch-on period and are discharged in series during the switch-off period. The structures of the proposed converters are very simple.
Design and Simulation of Efficient DC-DC Converter Topology for a Solar PV Mo...Sajin Ismail
Modulated Integrated Converter systems are considered to be the new and global turning point in the field of
Solar PV systems. These converters are highly recognised for its modular size and compact nature and they are supposed to
be attached directly with each PV module and since one PV module is having the power rating of a few watts ranging from
0-500Ws, the design rating would be in the same range and thus the most vital condition in such a design is efficiency
under these relatively low loads. In this paper an isolated interleaved boost converter topology is considered in the DC-DC
section and which is designed and simulated for a specific power rating (250W) and the efficiency is analysed with varying
load conditions and compared with the target efficiency of the system.
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.
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.
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.
This paper presents a step 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 4.9.
Transformer less Boost Converter Topologies with Improved Voltage Gain Operat...IJMER
In this project, a new step up converter proposed in a recent work is analyzed, designed, simulated with MATLAB Simulink. Conventional dc–dc boost converters are unable to provide high step-up voltage gains due to the effect of power switches, rectifier diodes, and the equivalent series resistance of inductors and capacitors. This paper proposes transformer less dc–dc converters to achieve high step-up voltage gain without an extremely high duty ratio. In the proposed converters, two inductors with the same level of inductance are charged in parallel during the switch-on period and are discharged in series during the switch-off period. The structures of the proposed converters are very simple.
Design and Simulation of Efficient DC-DC Converter Topology for a Solar PV Mo...Sajin Ismail
Modulated Integrated Converter systems are considered to be the new and global turning point in the field of
Solar PV systems. These converters are highly recognised for its modular size and compact nature and they are supposed to
be attached directly with each PV module and since one PV module is having the power rating of a few watts ranging from
0-500Ws, the design rating would be in the same range and thus the most vital condition in such a design is efficiency
under these relatively low loads. In this paper an isolated interleaved boost converter topology is considered in the DC-DC
section and which is designed and simulated for a specific power rating (250W) and the efficiency is analysed with varying
load conditions and compared with the target efficiency of the system.
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.
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.
Fuzzy based control of Transformer less Coupled inductor based DC-DC converterIJERA Editor
Most of the industrial applications use any one of the basic DC-DC converter configurations namely buck,
boost, buck–boost, and Cuk converters. These converters are non-isolating converters. Buck-boost converters
use inductors for storing energy from the source and release the same to load or output. This results in high
stress across magnetic components. This drawback restricts usage of buck-boost converters to low power
applications. Flyback converters popularly have known as buck-boost converters uses transformers for
achieving wide range of step down and step up voltages. Coupled inductor based converters or tapped inductor
based converters are used for achieving wide input – wide output conversion ratios. Coherent transition between
step-down and step-up modes is achieved by a proper control scheme. This paper proposes fuzzy logic based
closed loop control scheme for control of converter switches. Theoretical derivations of control parameters with
their membership values, mamdani based rules for development of fuzzy rules and simulation results of a
coupled inductor based DC-DC converter using MATLAB / SIMULINK are concluded.
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
Analysis of 1MHz Class-E Power Amplifier for Load and Duty Cycle VariationsIJPEDS-IAES
This paper presents the simulation and experimental of Class-E power
amplifier which consists of a load network and a single transistor. The
transistor is operated as a switch at the carrier frequency of the output signal.
In general, Class-E power amplifier is often used in designing a high
frequency ac power source because of its ability to satisfy the zero voltage
switching (ZVS) conditions efficiently even when working at high
frequencies with significant reduction in switching losses. In this paper, a
10W Class-E power amplifier is designed, constructed, and tested in the
laboratory. SK40C microcontroller board with PIC16F877A is used to
generate a pulse width modulation (PWM) switching signal to drive the
IRF510 MOSFET. To be specific, in this paper, the effect on switching and
performance at 1MHz frequency are studied in order to understand the Class-
E power amplifier behavior. Performance parameters relationships were
observed and analysed in respect to the load and duty cycle. The proposed
Class-E power amplifier efficiency is 98.44% powered with 12V dc,
operated at frequency 1MHz and 50% duty cycle to produce a stable
sinusoidal signal. Theoretical calculations, simulation and experimental
results for optimum operation using selected component values are then
compared and presented.
Modern trend in power generation is the use of two-stage configuration i.e., allocating a single PV cell
to a converter to produce grid voltage of adequate requirement and then to convert DC to AC voltage for grid
cnnection. Usually, the first stage is a DC-DC boost type converter which is responsible for extracting maximum
power from panel and boosting PV voltage to a value higher than peak of grid voltage. A converter is proposed,
which is derived from an active network based converter, is chosen as the first stage and a five level inverter is
used as the second stage of the configuration. Thus, in overall, the converter used is having high gain and reduced
switching stress. The Inverter used is having the advantage of low filter requirement, reduced stress, EMI and
reduced THD level. A closed loop control of the converter is done to maintain constant output voltage under
varying input voltage. MATLAB R2014a version software is used to simulate the model. The prototype of the
two stage configuration was developed and tested in the laboratory and results were verified using PIC 16F877A.
A Comparative Study of Various AC-DC Converters for Low Voltage Energy Harves...paperpublications3
Abstract: Electromagnetic microscale and mesoscale power generators with low voltage outputs are now widely used as kinetic energy harvesters. The extrinsic vibrations on the generator can excite the internal oscillations between the proof mass magnet and the electrical damper coils. These oscillations produce a periodically varying magnetic flux in coil, inducing a corresponding AC output voltage. This output can be converted to dc and can be used to supply power to electronic loads. The conventional AC-DC converters for energy harvesting system with diode rectifiers suffer considerable voltage drop resulting increase in power loss of circuitry and complexity. As a remedy various bridgeless boost converters were designed and implemented. Standard H bridge converter with 4 switch or 2 switch, dual polarity boost converters, parallel combination of boost and buck-boost converter, integrated boost and buck-boost combination bridgeless rectifier are some of these. These circuits are studied, simulated and compared. The simulation models are drawn and simulated using MATLAB R2010a.
An Efficient Photo Voltaic System for Onboard Ship ApplicationsIJERA Editor
In this paper a high efficient photovoltaic system is proposed for onboard ship applications which convert the
lower voltage obtained from solar modules to higher voltage required by the ship service loads. In a typical
photovoltaic system only step-up /boost converter is used due to which the converter has to operate in extreme
duty ratio, resulting in increase of switching losses and thus decreasing the overall efficiency. But in this paper
the conventional boost converter is used with interleaved inductors and capacitors. The poposed system stores
the energy in inductors and thus reduces the stress in the switches (Without allowing the total voltage to appear
across the switch). The simulation is designed using MATLAB/Simulink with an Input voltage of 40-V to
achieve a output voltage of 300-380 V. The developed simulation results are compared for output powers of
500W and 1kW
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.
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.
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.
Low Current Ripple, High Efficiency Boost Converter with Voltage MultiplierIJMTST Journal
An innovative high voltage-gain boost converter, which is made for home inverters contains the combination
of switched capacitors and coupled inductors made a voltage multiplier, which is used to increase the output
gain of a traditional converter abnormally without using an excessive switching frequency. The setup not only
maximizes the efficiency but also eliminates input current ripple almost, which deduces conduction losses
and current stress of switches causes to greater extension of input source lifetime. In addition, due to the
lossless passive clamp performance, leakage energy is recycled to the output terminal. Hence, large voltage
spikes across the main switches are alleviated, and the efficiency is improved. Even the low voltage stress
makes the low-voltage-rated MOSFETs be embraced for reductions conduction losses and expense.
Ultimately, the prototype circuit with 24-V input voltage, 230-V output, and 1000-W output power is operated
to verify its performance. The greatest effectiveness is 97.1 %.
Modeling and Analysis of Transformerless High Gain Buck-boost DC-DC ConvertersIAES-IJPEDS
This paper proposes a transfomerless switched capacitor buck boost converter model, which provides higher voltage gain and higher efficiency when compared to the conventional buck boost converter. The averaged model based on state- space description is analyzed in the paper. The simulation results are presented to confirm the capability of the converter to generate high voltage ratios. The comparison between the proposed model and the traditional model is also provided to reveal the improvement. The proposed converter is suitable for for a wide application which requires high step-up DC-DC converters such as DC micro-grids and solar electrical energy.
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
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
Fuzzy based control of Transformer less Coupled inductor based DC-DC converterIJERA Editor
Most of the industrial applications use any one of the basic DC-DC converter configurations namely buck,
boost, buck–boost, and Cuk converters. These converters are non-isolating converters. Buck-boost converters
use inductors for storing energy from the source and release the same to load or output. This results in high
stress across magnetic components. This drawback restricts usage of buck-boost converters to low power
applications. Flyback converters popularly have known as buck-boost converters uses transformers for
achieving wide range of step down and step up voltages. Coupled inductor based converters or tapped inductor
based converters are used for achieving wide input – wide output conversion ratios. Coherent transition between
step-down and step-up modes is achieved by a proper control scheme. This paper proposes fuzzy logic based
closed loop control scheme for control of converter switches. Theoretical derivations of control parameters with
their membership values, mamdani based rules for development of fuzzy rules and simulation results of a
coupled inductor based DC-DC converter using MATLAB / SIMULINK are concluded.
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
Analysis of 1MHz Class-E Power Amplifier for Load and Duty Cycle VariationsIJPEDS-IAES
This paper presents the simulation and experimental of Class-E power
amplifier which consists of a load network and a single transistor. The
transistor is operated as a switch at the carrier frequency of the output signal.
In general, Class-E power amplifier is often used in designing a high
frequency ac power source because of its ability to satisfy the zero voltage
switching (ZVS) conditions efficiently even when working at high
frequencies with significant reduction in switching losses. In this paper, a
10W Class-E power amplifier is designed, constructed, and tested in the
laboratory. SK40C microcontroller board with PIC16F877A is used to
generate a pulse width modulation (PWM) switching signal to drive the
IRF510 MOSFET. To be specific, in this paper, the effect on switching and
performance at 1MHz frequency are studied in order to understand the Class-
E power amplifier behavior. Performance parameters relationships were
observed and analysed in respect to the load and duty cycle. The proposed
Class-E power amplifier efficiency is 98.44% powered with 12V dc,
operated at frequency 1MHz and 50% duty cycle to produce a stable
sinusoidal signal. Theoretical calculations, simulation and experimental
results for optimum operation using selected component values are then
compared and presented.
Modern trend in power generation is the use of two-stage configuration i.e., allocating a single PV cell
to a converter to produce grid voltage of adequate requirement and then to convert DC to AC voltage for grid
cnnection. Usually, the first stage is a DC-DC boost type converter which is responsible for extracting maximum
power from panel and boosting PV voltage to a value higher than peak of grid voltage. A converter is proposed,
which is derived from an active network based converter, is chosen as the first stage and a five level inverter is
used as the second stage of the configuration. Thus, in overall, the converter used is having high gain and reduced
switching stress. The Inverter used is having the advantage of low filter requirement, reduced stress, EMI and
reduced THD level. A closed loop control of the converter is done to maintain constant output voltage under
varying input voltage. MATLAB R2014a version software is used to simulate the model. The prototype of the
two stage configuration was developed and tested in the laboratory and results were verified using PIC 16F877A.
A Comparative Study of Various AC-DC Converters for Low Voltage Energy Harves...paperpublications3
Abstract: Electromagnetic microscale and mesoscale power generators with low voltage outputs are now widely used as kinetic energy harvesters. The extrinsic vibrations on the generator can excite the internal oscillations between the proof mass magnet and the electrical damper coils. These oscillations produce a periodically varying magnetic flux in coil, inducing a corresponding AC output voltage. This output can be converted to dc and can be used to supply power to electronic loads. The conventional AC-DC converters for energy harvesting system with diode rectifiers suffer considerable voltage drop resulting increase in power loss of circuitry and complexity. As a remedy various bridgeless boost converters were designed and implemented. Standard H bridge converter with 4 switch or 2 switch, dual polarity boost converters, parallel combination of boost and buck-boost converter, integrated boost and buck-boost combination bridgeless rectifier are some of these. These circuits are studied, simulated and compared. The simulation models are drawn and simulated using MATLAB R2010a.
An Efficient Photo Voltaic System for Onboard Ship ApplicationsIJERA Editor
In this paper a high efficient photovoltaic system is proposed for onboard ship applications which convert the
lower voltage obtained from solar modules to higher voltage required by the ship service loads. In a typical
photovoltaic system only step-up /boost converter is used due to which the converter has to operate in extreme
duty ratio, resulting in increase of switching losses and thus decreasing the overall efficiency. But in this paper
the conventional boost converter is used with interleaved inductors and capacitors. The poposed system stores
the energy in inductors and thus reduces the stress in the switches (Without allowing the total voltage to appear
across the switch). The simulation is designed using MATLAB/Simulink with an Input voltage of 40-V to
achieve a output voltage of 300-380 V. The developed simulation results are compared for output powers of
500W and 1kW
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.
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.
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.
Low Current Ripple, High Efficiency Boost Converter with Voltage MultiplierIJMTST Journal
An innovative high voltage-gain boost converter, which is made for home inverters contains the combination
of switched capacitors and coupled inductors made a voltage multiplier, which is used to increase the output
gain of a traditional converter abnormally without using an excessive switching frequency. The setup not only
maximizes the efficiency but also eliminates input current ripple almost, which deduces conduction losses
and current stress of switches causes to greater extension of input source lifetime. In addition, due to the
lossless passive clamp performance, leakage energy is recycled to the output terminal. Hence, large voltage
spikes across the main switches are alleviated, and the efficiency is improved. Even the low voltage stress
makes the low-voltage-rated MOSFETs be embraced for reductions conduction losses and expense.
Ultimately, the prototype circuit with 24-V input voltage, 230-V output, and 1000-W output power is operated
to verify its performance. The greatest effectiveness is 97.1 %.
Modeling and Analysis of Transformerless High Gain Buck-boost DC-DC ConvertersIAES-IJPEDS
This paper proposes a transfomerless switched capacitor buck boost converter model, which provides higher voltage gain and higher efficiency when compared to the conventional buck boost converter. The averaged model based on state- space description is analyzed in the paper. The simulation results are presented to confirm the capability of the converter to generate high voltage ratios. The comparison between the proposed model and the traditional model is also provided to reveal the improvement. The proposed converter is suitable for for a wide application which requires high step-up DC-DC converters such as DC micro-grids and solar electrical energy.
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
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
Science Journals,
ER Publication,
IJETR, IJMCTR,
Journals,
International Journals,
High Impact Journals,
Monthly Journal,
Good quality Journals,
Research,
Research Papers,
Research Article,
Free Journals, Open access Journals,
erpublication.org,
Engineering Journal,
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Single-Input Double Output High Efficient Boost Dc–Dc ConverterIJMER
The aim of this project is to develop a high-efficiency single-input multiple-output (SIMO) dc–dc converter. The proposed converter can boost the voltage of a low-voltage input power source to a controllable high-voltage dc bus and middle-voltage output terminals. The high-voltage dc bus can take as the main power for a high-voltage dc load or the front terminal of a dc–ac inverter.Moreover, middle-voltage output terminals can supply powers for individual middle-voltage dc loads or for charging auxiliary power sources (e.g., battery modules). In this project, a coupled-inductor based dc–dc converter scheme utilizes only one power switch with the properties of voltage clamping and soft switching, and the corresponding device specifications are adequately designed. As a result, the objectives of high-efficiency power conversion, high step up ratio, and various output voltages with different levels can be obtained
Power Quality Enhancement in Grid Connected PV Systemsusing High Step up DC-D...IJECEIAES
Renewable energy sources (RES) are gaining more importance in the present scenario due to the depletion of fossil fuels and increasing power demand. Solar energy is the one of the most promising as it is clean and easily available source. The voltage obtained from the PV system is low. This voltage is increased by high step up dc-dc converter which uses only one switch leads to low switching losses and hence the efficiency of this converter is high. To get the good response this converter is operated in closed loop manner. Integration of PV system with existing grid has so many issues like distorted voltage, current and reactive power control etc. This paper presents a four leg inverter which works on hysteresis current control technique to address the power quality issues like reactive power compensation, balanced load currents and compensation of neutral current. The switching to the inverter is designed in such a way that it supplies the extra current to stabilise the current of the grid that is being supplied to the loads. Finally, the proposed technique is validated by using mat lab/Simulink software and corresponding results are presented in this paper.
High Efficiency Dc-Dc Converter for Renewable Energy Applications and High Vo...IOSRJEEE
Renewable sources like solar PV cell is prefer to be operated at low voltages. This paper proposes a novel high voltage gain, high efficiency dc-dc converter based on coupled inductor, intermediate capacitor. The input energy acquired from the source is first stored in the coupled inductor and intermediate capacitor in a lossless manner. Improve the voltage gain and efficiency of the system. Exorbitant duty cycle values are not required for high voltage gain, when prevent the problems such as diode reverse recovery. Presence of a passive clamp network causes reduced voltage stress on the switch. Overall performance of the renewable energy with a step-up DC/DC converter using closed loop control action is used in the proposed system, improving the overall efficiency of the system.
An Efficient Photo Voltaic System for Onboard Ship ApplicationsIJERA Editor
In this paper a high efficient photovoltaic system is proposed for onboard ship applications which convert the
lower voltage obtained from solar modules to higher voltage required by the ship service loads. In a typical
photovoltaic system only step-up /boost converter is used due to which the converter has to operate in extreme
duty ratio, resulting in increase of switching losses and thus decreasing the overall efficiency. But in this paper
the conventional boost converter is used with interleaved inductors and capacitors. The poposed system stores
the energy in inductors and thus reduces the stress in the switches (Without allowing the total voltage to appear
across the switch). The simulation is designed using MATLAB/Simulink with an Input voltage of 40-V to
achieve a output voltage of 300-380 V. The developed simulation results are compared for output powers of
500W and 1kW
Coupled Inductor Based High Step-Up DC-DC Converter for Multi Input PV SystemIJERA Editor
With the shortage of the energy and ever increasing of the oil price, research on the renewable and green energy
sources, especially the solar arrays and the fuel cells, becomes more and more important. How to achieve high
step-up and high efficiency DC/DC converters is the major consideration in the renewable power applications
due to the low voltage of PV arrays and fuel cells. In this paper a coupled inductor dc-dc converter for photovoltaic
system is proposed. The circuit configuration of the proposed converter is very simple. Thus, the
proposed converter has higher step-up and step-down voltage gains than the conventional bidirectional dc–dc
boost/buck converter. Under same electric specifications for the proposed converter and the conventional
bidirectional boost/buck converter, the average value of the switch current in the proposed converter is less than
the conventional bidirectional boost/buck converter. The operating principles have been applied to multi input
photovoltaic system and outputs have been observed.
Abstract: Energy from the sun and the wind can alleviate the pressure on traditional sources that has been considerably depleted. Many stages of renewable energy conversion require DC-DC converters with high voltage gain and high power. The applications where electrical isolation is not necessary, transformer less high gain converters can be used in order to avoid the difficulty of using large capacity transformers. This is a step up resonant converter which can achieve high voltage-gain using LC parallel resonant tank. Zero-voltage-switching (ZVS) of semiconductor devices in a resonant converter can be achieved by resonant devices. It is characterized by ZVS turn-on and nearly ZVS turn-off of main switches. Moreover, the equivalent voltage stress of the semiconductor devices is lower than other resonant step up converters. A resonant converter is simulated using MATLAB/SIMULINK and experimental results are also verified.
Keywords: Frequency Modulation, Resonant Converter, Zero Voltage Switching, Voltage Stress.
Title: Variable Switching Frequency Based Resonant Converter
Author: Anooja Shahul, Prof. Annie P Oommen, Prof. Sera Mathew
ISSN 2349-7815
International Journal of Recent Research in Electrical and Electronics Engineering (IJRREEE)
Paper Publications
A Novel High Step-Up DC–DC Converter for Hybrid Renewable Energy System appli...IJERD Editor
Large electric drives and utility applications require advanced power electronics converter to meet
the high power demands. As a result, power converter structure has been introduced as an alternative in high
power and medium voltage situations using Renewable energy sources (RES). This paper describes a new
DC/DC converter with safety, high efficiency and high step up capabilities. This converter is best suited for
Wind/Fuel cell(FC)based Induction Motor applications for pumping systems. The safety feature of this
converter makes it friendly for the farmers to use it for irrigation and agriculture usages. The converter achieves
high step-up voltage gain with appropriate duty ratio and low voltage stress on the power switches. Also, the
energy stored in the leakage inductor of the coupled inductor can be recycled to the output. The maximum
output voltage is determined by the number of the capacitors. The capacitors are charged in parallel and are
discharged in series by the coupled inductor, stacking on the output capacitor. Thus, the proposed converter can
achieve high step-up voltage gain with appropriate duty ratio and interfaced to induction motor through 9-level
inverter and also energy fed to grid system when no load operation. The simulation results are obtained using
MATLAB/SIMULINK software.
Incremental Conductance MPPT Algorithm for PV System Implemented Using DC-DC ...IJERA Editor
The two basic topologies of switch mode DC-DC converters (Buck and Boost) are analyzed with a view of their use in PV (photovoltaic) systems, as the photovoltaic generator exhibits non-linear characteristics due to the change in environmental condition and load variation. As the efficiency of PV panels is low it becomes mandatory to extract maximum power from the PV panel at a given period of time. Several MPPT algorithms with different types of converters are being proposed for extracting maximum power from the PV panel. It is found that the nature of load plays an important role in the choice of topology. This paper investigates the implementation issues of Incremental Conductance method with Buck and Boost Converters. Mathematical analysis and desirable steady-state operating point of the converters are derived to give satisfactory maximum power point tracking operation.
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.
Extremely high duty cycle of boost converter may result in higher conduction losses. To achieve a high
conversion ratio without operating at extremely high duty ratio, some converters based on transformers or coupled
inductors or tapped inductors have been provided. However, the leakage inductance in the transformer, coupled
inductor or tapped inductor will cause high voltage spikes in the switches and reduce system efficiency. A novel
single switch cascaded dc-dc converter of boost and buck boost converters have extended voltage conversion ratio
to d/(1-d)2. The features of the converter are high voltage gain; only one switch for realizing the converter, the
number of magnetic components is small etc. So comparing with other topologies cascaded converter is more
effective. Simulation of the converter for a dc input voltage and fixed duty cycle was done, and the same was
verified experimentally for a low input voltage. The software used for simulation was MatlabR2014a
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Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
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How to Split Bills in the Odoo 17 POS ModuleCeline George
Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
1. International Journal of Engineering and Technical Research (IJETR)
ISSN: 2321-0869, Volume-1, Issue-10, December 2013
13 www.erpublication.org
Abstract— in this paper performance of DC drive fed by high
step-up converter is studied. High step up zeta converter is
employed here with solar PV as a source without Extreme duty
ratios and the numerous turns-ratios of a coupled inductor ,
converter achieves a high step-up voltage-conversion ratio and
the leakage inductor energy of the coupled inductor is efficiently
recycled to the load. These features explain the module’s high
efficiency performance. The operating principles and
steady-state analyses of continuous and boundary conduction
modes, as well as the voltage and current stresses of the active
components, are analyzed for a 250W circuit model using
MATLAB SIMULINK.
Index Terms— Zeta converter, PWM technique, Coupled
Inductor, Active Switch.
I. INTRODUCTION
In recent years photovoltaic (PV) has became attractive as
a result PV market would grow up to 30 GW by 2014, due to
the following policy-driven scenario [1];One type of
renewable energy source is the photovoltaic (PV) cell, which
converts sunlight to electrical current, without any form for
mechanical or thermal interlink. Fig.1 Shows the block
diagram of the proposed converter, that the PV panel
(100~300W) is connected to the high step-up DC_DC
converter, the input voltage of the converter is 15~40Volt
from the PV panel.
Fig.1 General configuration of DC module.
PV cells are usually connected together to make PV modules,
consisting of 72 PV cells, which generates a DC voltage
between 15 Volt to 45 Volt and a typical maximum power of
160 Watt, depending on temperature and solar irradiation.
Fig. 2 shows that the maximum power point (MPP) voltage
Manuscript received November 29, 2013.
G.Arthiraja, PG Scholar, Dept. of Power Electronics and Drives, Jeppiaar
engineering College, Chennai, India, 9677969377.
B. Arunkumaran, PG Scholar, Dept. of Power Electronics and Drives,
Jeppiaar Engineering College, Chennai, India, 9445484322.
M. Ammal Dhanalakshm, PG Scholar, Dept. of Power Electronics and
Drives, Jeppiaar Engineering College, Chennai, India, 9677282451.
M. Sasikumar, Professor & Head, Dept. of Power Electronics and
Drives, Jeppiaar Engineering College, Chennai, India, 9094277053.
range is from 15 V to 40 V with various power capacities of
about 100 W to 300 W for a single commercial PV panel.
Fig.2 MPP voltage (Vmp) distribution with various power
capacities of PVpanel.
The typical Zeta converter will provide either a step-up or a
step-down function to the output, similar to that of the
buck-boost or SEPIC converter topologies.The conventional
Zeta converter has been configured of two inductors, a series
capacitor and a diode. Previous research works have
developed diverse Zeta converter applications, as follows.A
coupled inductor could be employed to reduce power supply
dimensions[2]. Some Zeta and fly back combination
converters have extend the output range by the use of this
coupled-inductor technique[3],[5]. ]. By Employing soft
switching technique, zero-voltage switching and zero-current
switching, on the Zeta converter; and hanging the input
inductor of the ZETA converter[3],[6],[7]; to a coupled
inductor have obtained a higher step-up conversion
ratio[8],[20]. Many research works on high step-up converter
topology included analyses of the switched-inductor and
switched-capacitor types[9]–[11],transformerless
switched-capacitor type [12], [13],the boost type integrated
with the coupled inductor [14], [15], the voltage-lift type and
the capacitor-diode voltage multiplier. The equivalent series
resistance (ESR) of the capacitor and the parasitic resistances
of the inductor are also affecting the overall efficiency. In
regard to increasing voltage gain, this attribute is constricted
by the voltage stress on the active switch. However, if the
leakage inductor energy of the coupled inductor could be
recycled, then the voltage stress is reduced on the active
switch, that means the coupled-inductor and the
voltage-multiplier or voltage-lift techniques are able to
accomplish the goal of achieving higher voltage gain
[2]–[22].The DC-DC boost converter is used for voltage
step-up applications, and in this case this converter will be
Solar PV Based Zeta Converter with Capacitor
Multiplier and Coupled Inductor for DC Drive
Application
G.Arthiraja, M. Ammal Dhanalakshmi, B.Arunkumaran and M. Sasikumar
2. Solar PV Based Zeta Converter with Capacitor Multiplier and Coupled Inductor for DC Drive Application
14 www.erpublication.org
operated at extremely high duty ratio to achieve high step-up
voltage gain. However, the voltage gain and the efficiency are
limited due to the constraining effect of power switches,
diodes, and the equivalent series resistance (ESR) of
inductors and capacitors. Moreover, the extremely high
duty-ratio operation will result in a serious reverse-recovery
problem. Much higher voltage gain is achieved by using the
coupled inductor and the voltage-multiplier or voltage-lift
techniques. The operating principles and steady-state analysis
are presented in the following sections.
II. OPERATING PRINCIPLES OF THE
PROPOSED CONVERTERS
Fig. 3 shows the circuit configuration of the proposed
converter, which consists of two active switch S1,one coupled
inductor, three diodes D1~D3 and three capacitor C1~C3.The
coupled inductor is modeled as a magnetizing inductor L
m
,
primary leakage inductor L
k1
, secondary leakage inductor L
k2
,
and an ideal transformer.
Fig.3 simplified model of proposed converter.
All components are ideal. The ON-state resistance RDS(ON)
of the active switches, the forward voltage drop of the diodes,
and the equivalent series resistance (ESR) of the
coupled-inductor and output capacitors are ignored The turns
ratio n of the coupled inductor T1 winding is equal to
N2/N1.Fig. 4 shows some typical waveforms during one
switching period in continuous conduction mode (CCM)
operation. The operating principle and the five operating
modes are described as follows.
A. CCM Operation
Mode I [t0,t1]: In this interval the capacitor C2 obtain energy
continuously from the secondary leakage inductor Lk2.The
current flow path is shown in Fig. 5(a); switch S1 and diodes
D2 are conducting. The source voltage Vin is applied on
magnetizing inductor Lm and primary leakage inductor Lk1
,the current iLm is decreased; at the same time, Lm also releases
its energy to the secondary winding, as well as charges the
capacitor C2 along with the decrease in energy, the charging
current iD2 and iC2 also decreases. The secondary leakage
inductor current iLK2 is being declined according to iLm/n. Once
when the increasing iLk1 equals the decreasing iLm this mode
ends at t=t1.
iin(t) = iDS(t) = iLk1(t) (1)
diLm(t) = vLm (2)
dt Lm
diLk1(t) = Vin - vLm (3)
dt Lk1
iLk2(t) = iLm(t) - iLk1(t) (4)
n
Fig.4. Typical waveforms of the proposed converter at CCM
operation.
Mode II [t1, t2]: During this interval, source energy Vinis
connected in series with C1, C2, secondary winding N2, and Lk2
to charge output capacitor C3 and load R; at the same time,
magnetizing inductor Lm also receives energy from Vin. The
path of current flow is shown in Fig. 5(b); as illustrated,
switch S1remains on, and only diode D3 is in conduction. The
iLm, iLk1, and iD3 have been increasing because the Vin
is crossing Lk1, Lm and primary winding N1; Lm and Lk1 are
storing energy from Vin; as well as, Vinis also in series with N2
of coupled inductor T1, and capacitors C1 and C2 have been
discharging their energy to capacitor C3 and load R, that leads
to increases in iLm, iLk1, iDS, and iD3. This mode ends at t = t2 at
which switch S1 is turned off.
iLm(t) = iLk1(t) - niLk2(t) (5)
diLm(t) = Vin (6)
dt Lm
iin(t) = iDS(t) = iLm(t) + (1+n) iLk2(t) (7)
diLk2(t) = diD3(t) = (1+n)Vin + VC1 + VC2 (8)
dt dt Lk2
Mode III [t2, t3]:During this transition interval, C3 is being
charged from secondary leakage inductor Lk2 when switch S1
is turned off. The current flow path is shown in Fig. 5(c), and
the diodes D1 and D3 are conducting. The energy stored in
leakage inductor Lk1 is flowing through diode D1 and the
capacitor C1 is charged instantly when S1 turns off. Also, the
Lk2 keeps the same current direction as in the previous mode
and is in series with C2 to charge output capacitor C3 and load
R. The summation of Vin, VLm, and VLk1 is the voltage across S1.
Currents iLk1 and iLk2 are rapidly declining, but iLm increases
because Lmis receiving energy from Lk2. Once when the
current iLk2 drops to zero, this mode endsatt= t3.
iin(t) = 0 (9)
3. International Journal of Engineering and Technical Research (IJETR)
ISSN: 2321-0869, Volume-1, Issue-10, December 2013
15 www.erpublication.org
iLm(t) = iLk1(t) - niLk2(t) (10)
diLk1(t) = -VC1 – vLm (11)
dt Lk1
diLk2(t) = diD3(t) = n vLm + VC1 – Vo (12)
dt dt Lk2
(a)
(b)
(c)
(d)
(e)Fig.5. During CCM operation, current flowing path in five
modes operation (a) Mode I. (b) Mode II. (c) Mode III. (d)
Mode IV. (e) Mode V.
Mode IV [t3, t4]:In this transition interval, the energy stored in
magnetizing inductor Lm is released simultaneously to C1 and
C2. The current flow path is shown in Fig. 5(d). and the
diodes D1 and D2 are conducting. As leakage energy still
flows through diode D1 and continues to charge capacitor
C1,Currents iLk1 and iD1 are persistently being decreased.
Through T1 and D2 , the Lmis delivering its energy for charging
capacitor C2. The energy stored in capacitors C3 is discharged
constantly to the load R. The voltage across S1 is the same as
in the prior mode. Current iD2 is increasing but iLk1 and iLm are
decreasing, but. This mode ends when current iLk1 becomes
zero at t = t4.
iLm(t) = iLk1(t) - niLk2(t) (13)
diLk1(t) = -VC1 – vLm (14)
dt Lk1
diLk2(t) = n vLm + VC2 (15)
dt Lk2
Mode V [t4, t5]:In this interval, magnetizing inductor Lm
constantly transfers energy to C2. The current flow path is
shown in Fig. 5(e), and diode D2 is alone conducting. Due to
the continuous flow of magnetizing inductor energy through
the coupled inductor T1 to secondary winding N2 and D2 for
charging capacitor C2 the iLm is decreasing. The stored energy
in capacitors C3 constantly discharges to the load R. The
summation of Vin and VLm is the voltage across S1.When switch
S1 is turned on at the beginning of the next switching period
this mode ends.
diLm(t) = vLm (16)
dt Lm
iLk1(t) = 0 (17)
diLk2(t) = n vLm + VC2 (18)
dt Lk2
III. STEADY-STATE ANALYSIS OF PROPOSED
CONVERTERS
CCM Operation:
To simplify the steady-state analysis, only modes II and IV
are considered for CCM operation, and the primary &
secondary side of leakage inductance are ignored. During
mode II the following equations can be written,
vLm= Vin
vN2 = nVin
The following equations can be written from mode IV:
vLm = -Vc1
-vN2 = Vc2.
Applying a volt-second balance on the magnetizing inductor
Lm yields
ʃ DTS
(Vin)dt + ʃ DTS
(-VC1)dt = 0 (19)
0 0
ʃ DTS
(nVin)dt + ʃ DTS
(-VC2)dt = 0 (20)
0 0
the voltage across capacitor C1 and C2 are
VC1 = D Vin (21)
1- D
VC2 = n DVin (22)
1- D
The output voltage Vo and the voltage gain MCCM can be
written as
VO = Vin + DVin+ nVin+ nD Vin = (1+n)Vin (23)
1- D 1- D 1- D
4. Solar PV Based Zeta Converter with Capacitor Multiplier and Coupled Inductor for DC Drive Application
16 www.erpublication.org
MCCM = VO = Iin = (1+n) (24)
Vin IO 1- D
Fig. 6 shows voltage gain MCCM as a function of duty ratio D
by various turns ratios,and the turns ratio versus duty ratio
under voltage gain of MCCM = 8.
Fig.6. voltage gain MCCM as function of duty ratio by various turns
ratios, and the turns ratio versus duty ratio under voltage conversion
is 8.
IV. DESIGN OF PROPOSED CONVERTER
The component parameter design and selection can be
determined by following conditions,
A. Duty ratio (D):When the turns ratio n=3, that the duty ratio
will be 75%.If the duty ratio is larger than
70%,conduction losses will be increased
significantly. Thus, n=3 will be the correct choice for
the duty ratio D=50%
B. Active Switch and Diodes: The voltage rating of the active
switch can
VDS = VD1= VO (25)
1+ n
VD2= nVO (26)
1+ n
VD3= VO (27)
C.Magnetizing Inductor: By using the values of turns ratio
and Duty ratio ,the converter are operated in BCM at 50
kHz operating frequency, The magnetizing inductance can
be found as follows:
LmB= fs. D3
– 2D2
+D (28)
Rq 2n2
+ 4n + 2
D. Switched capacitor: The voltage of capacitor C1 and C2
could be obtained by (11)-(12) respectively ,The capacitance
value are determined by
C1>2. PMAX (29)
V2
C1 .fs
C2> 2. PMAX (30)
V2
C2 . fs
V. DISCUSSION OF SIMULATION RESULTS :
Operation of the proposed converter is illustrated using R
and RL load. The performance is studied by using Matlab
simulation. The simulink model of the proposed converter
with R load and RL are shown in Fig.7.1 and Fig 7.2
respectively.
Fig.7.1 simulink model with R load.
Fig.7.2 Simulink model with RL load
.
Fig.8.1 Output voltage and current for R load.
The resultant output voltage and output current is shown in
fig. 8.1 and 8.2 respectively for both R and RL load.fig.9
shows the efficiency of the resistive load
.
5. International Journal of Engineering and Technical Research (IJETR)
ISSN: 2321-0869, Volume-1, Issue-10, December 2013
17 www.erpublication.org
Fig.8.2 output voltage and current for RL load.
Fig.9 Efficiency versus resistive load.
VI. CONCLUSION
A high efficient DC/DC boost converter is proposed in this
paper. The efficiency of the converter is improved by utilizing
the energy stored in the coupled inductor and the two
capacitors. Thus it makes the boost converter to implement in
the drive applications. The experimental results prove that
high voltage gain and efficiency are achieved. The results
show that applying coupled-inductor turns ratio of n = 3 to the
eight-times step-up voltage-conversion ratio attains maximum
efficiency.
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G. Arthiraja is currently pursuing Master of Engineering
in Power Electronics and Drives in Jeppiaar Engineering
College, Anna University, Chennai, Tamilnadu. Earlier he
received his B.E degree in Electrical and electronics
Engineering in Sri Sairam Engineering college, Anna
University, Chennai in 2012. His current research interests
include Renewable Energy Sources and DC-DC
Converters.
M. Ammal Dhanalakshmi is currently pursuing Master of
Engineering in Power Electronics and Drives in Jeppiaar
Engineering College, Anna University, Chennai,
Tamilnadu. Earlier she received her B.E degree in
Elecrtrical and Electronics Engineering in Vel‘s Srinivasa
college of engineering and technology, Chennai in 2009.
Her current research interests include soft switching
DC-DC Converters. She is a life member of ISTE.
B. ArunKumaran is currently pursuing Master of
Engineering in Power Electronics and Drives in Jeppiaar
Engineering College, Anna University, Chennai,
Tamilnadu. Earlier he received his B.E degree in
Electronics and Instrumentation Engineering in
Thangavelu Engineering college, Anna University,
Chennai in 2011. His current research interests includes
Renewable Energy Sources and DC-DC Converters.
Dr.M.Sasikumar has received the Bachelor degree in
Electrical and Electronics Engineering from
K.S.Rangasamy College of Technology, Madras
University, India in 1999, and the M.Tech degree in
power electronics from VIT University, in 2006. He has
obtained his Ph.d. degree from Sathyabama University,
Chennai. Currently he is working as a Professor and
Head in Jeppiaar Engineering College, Chennai
Tamilnadu, India. He has published papers in National, International
conferences and journals in the field of power electronics and wind energy
conversion systems. His area of interest includes in the fields of wind energy
systems and power converter with soft switching PWM schemes. He is a life
member of ISTE.