This document describes the design and simulation of a power factor correction (PFC) circuit for an AC/DC converter using a PWM boost regulator. Non-linear loads draw non-sinusoidal current from the power supply, reducing power quality. The proposed PFC circuit utilizes current shaping techniques with the boost inductor to generate a sinusoidal input current and improve the power factor. Simulation results showed the input current was sinusoidal in phase with the line voltage, achieving near unity power factor. Harmonic analysis revealed the 3rd, 17th, and 19th harmonics were significantly reduced after PFC, improving the power factor from 62.3% to 98.8%. The PFC circuit demonstrated effective mitigation of current harmon
Three Phase Single Stage Isolated Cuk based PFC ConverterAsoka Technologies
In this paper, analysis and design of a three phase isolated Cuk based power factor correction (PFC) converter has been proposed. The proposed converter is operated in discontinuous output inductor current mode (DOICM) to achieve PFC at ac input. This avoids the inner current control loop which further eliminates the sensing of current. This makes the system more reliable and robust. The converter requires only one simple voltage control loop for output voltage regulation and all the power switches are driven by the same gate signal which simplifies the gate driver circuit. The detailed operation of the converter and design calculations are presented. And also a small signal model of the converter by using CIECE approach is presented to aid the controller design. The experimental results from a 2-kW laboratory prototype with 208-V line-to-line input voltage, 400-V output voltage are presented to confirm the operation of the proposed converter. An input power factor of 0.999, an input current total harmonic distortion of as low as 4.06% and a high conversion efficiency of 95.1% are achieved from laboratory prototype.
Comprehensive Study of Single-Phase AC-DC Power Factor Corrected Converters w...Asoka Technologies
Solid-state switch mode AC-DC converters having high-frequency transformer isolation are developed in buck, boost, and buck-boost configurations with improved power quality in terms of reduced total harmonic distortion (THD) of input current, power-factor correction (PFC) at AC mains and precisely regulated and isolated DC output voltage feeding to loads from few Watts to several kW. This paper presents a comprehensive study on state of art of power factor corrected single-phase AC-DC converters configurations, control strategies, selection of components and design considerations, performance evaluation, power quality considerations, selection criteria and potential applications, latest trends, and future developments. Simulation results as well as comparative performance are presented and discussed for most of the proposed topologies.
Three Phase Single Stage Isolated Cuk based PFC ConverterAsoka Technologies
In this paper, analysis and design of a three phase isolated Cuk based power factor correction (PFC) converter has been proposed. The proposed converter is operated in discontinuous output inductor current mode (DOICM) to achieve PFC at ac input. This avoids the inner current control loop which further eliminates the sensing of current. This makes the system more reliable and robust. The converter requires only one simple voltage control loop for output voltage regulation and all the power switches are driven by the same gate signal which simplifies the gate driver circuit. The detailed operation of the converter and design calculations are presented. And also a small signal model of the converter by using CIECE approach is presented to aid the controller design. The experimental results from a 2-kW laboratory prototype with 208-V line-to-line input voltage, 400-V output voltage are presented to confirm the operation of the proposed converter. An input power factor of 0.999, an input current total harmonic distortion of as low as 4.06% and a high conversion efficiency of 95.1% are achieved from laboratory prototype.
Comprehensive Study of Single-Phase AC-DC Power Factor Corrected Converters w...Asoka Technologies
Solid-state switch mode AC-DC converters having high-frequency transformer isolation are developed in buck, boost, and buck-boost configurations with improved power quality in terms of reduced total harmonic distortion (THD) of input current, power-factor correction (PFC) at AC mains and precisely regulated and isolated DC output voltage feeding to loads from few Watts to several kW. This paper presents a comprehensive study on state of art of power factor corrected single-phase AC-DC converters configurations, control strategies, selection of components and design considerations, performance evaluation, power quality considerations, selection criteria and potential applications, latest trends, and future developments. Simulation results as well as comparative performance are presented and discussed for most of the proposed topologies.
A unity power factor bridgeless isolated cuk converter fed brushless dc motor...LeMeniz Infotech
A unity power factor bridgeless isolated cuk converter fed brushless dc motor drive
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
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.
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.
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.
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.
Mitigation of harmonics using thyristor based 12 pulse voltage source pwm rec...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
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.
Analysis and design of single switch forward-flyback two-channel led driver w...LeMeniz Infotech
Analysis and design of single switch forward-flyback two-channel led driver with resonant-blocking capacitor
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
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
A Three Phase AC-AC ZCS Resonant Converter for Induction HeatingIJMTST Journal
Generally, domestic induction-heating technology requires a high output power levels with less number of
components in a compact size. To satisfy these requirements, the basic circuit configurations are considered
based on the combination of a rectifier and a inverter. The main disadvantage of this method has low-efficient
and economic problems. This paper proposes a new concept unlike previous method, i.e the direct conversion
of ac–ac converter for reducing the component count, reduce cost, improve reliability, and also efficiency.
Generally, the proposed converter is a voltage-source based series-resonant converter used for controlling
output power, and minimizing the control complexity. This paper also proposes a concept of AC-AC converter
based three phase Induction Heating applications.
Power quality improvement using impedance network based invertereSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
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.
IEEE 2015-15 Power Electronics and Power System Project titles for ME and BE Students,Bangalore.power electronics and power system projects in bangalore.
Prof. Cuk invited talk at APEC 2011 plenary session to celebrate
35 years of his creation of this modeling and analysis method.
This talk was also recorded on video by IEEE.tv and can be viewed together. Here is a link to that video.
https://youtu.be/BLx57J2fF5w
Note: first few minutes of the video is Prof. Cuk's interview made after his presentation. This is thern followed by full 25 minutes presentation, which can be followed by the enclosed 67 slides.
A unity power factor bridgeless isolated cuk converter fed brushless dc motor...LeMeniz Infotech
A unity power factor bridgeless isolated cuk converter fed brushless dc motor drive
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
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.
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.
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.
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.
Mitigation of harmonics using thyristor based 12 pulse voltage source pwm rec...eSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
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.
Analysis and design of single switch forward-flyback two-channel led driver w...LeMeniz Infotech
Analysis and design of single switch forward-flyback two-channel led driver with resonant-blocking capacitor
To Get this projects Call : 9566355386 / 99625 88976
Visit : www.lemenizinfotech.com / www.ieeemaster.com
Mail : projects@lemenizinfotech.com
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
A Three Phase AC-AC ZCS Resonant Converter for Induction HeatingIJMTST Journal
Generally, domestic induction-heating technology requires a high output power levels with less number of
components in a compact size. To satisfy these requirements, the basic circuit configurations are considered
based on the combination of a rectifier and a inverter. The main disadvantage of this method has low-efficient
and economic problems. This paper proposes a new concept unlike previous method, i.e the direct conversion
of ac–ac converter for reducing the component count, reduce cost, improve reliability, and also efficiency.
Generally, the proposed converter is a voltage-source based series-resonant converter used for controlling
output power, and minimizing the control complexity. This paper also proposes a concept of AC-AC converter
based three phase Induction Heating applications.
Power quality improvement using impedance network based invertereSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
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.
IEEE 2015-15 Power Electronics and Power System Project titles for ME and BE Students,Bangalore.power electronics and power system projects in bangalore.
Prof. Cuk invited talk at APEC 2011 plenary session to celebrate
35 years of his creation of this modeling and analysis method.
This talk was also recorded on video by IEEE.tv and can be viewed together. Here is a link to that video.
https://youtu.be/BLx57J2fF5w
Note: first few minutes of the video is Prof. Cuk's interview made after his presentation. This is thern followed by full 25 minutes presentation, which can be followed by the enclosed 67 slides.
IOSR Journal of Humanities and Social Science is an International Journal edited by International Organization of Scientific Research (IOSR).The Journal provides a common forum where all aspects of humanities and social sciences are presented. IOSR-JHSS publishes original papers, review papers, conceptual framework, analytical and simulation models, case studies, empirical research, technical notes etc.
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.
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.
Average current control of DC-DC Cuk Converters as Power Factor CorrectorIJERA Editor
The era of electronic devices in all loads due to the manufacturing technologies replaced many conventional electrical or mechanical loads including lighting loads where Light Emitting Diodes (LEDs) is becoming an emerging technique with many advantages. High frequency switching dc-dc converter is a new technology to control the load and the supply side simultaneously. Due to additional harmonics generated by these switching converters power factor correction has become a necessity in utility side. This paper focuses on the power factor correction of the supply side when employing an ideal LED load with dc-dc Cuk converter. This paper also illustrates the controlling of the power factor correction employing high switching frequency dc-dc converters. The control loops employed are discussed and the strategy for designing the compensator is also explained. The simulated results have been shown to ascertain the accepted performance of the power factor correction converter.
Design and Simulation of Power Factor Correction Boost Converter using Hyster...ijtsrd
Nowadays various power converters like AC DC or DC DC are widely used due to their flexible output voltage and high efficiency. But these converters take the current in the form of pulses from the utility grid so that the high Total Harmonic Distortion THD and poor Power Factor PF are the major disadvantages of these converters. Hence there is a continuous need for PF improvement and reduction of line current harmonics. The most popular topology for Active Power Factor Correction APFC is a boost converter as it draws continuous input current. This input current can be manipulated by Hysteresis control technique. The boost converter can perform this type of active power factor correction in many discontinuous and continuous modes. The design and simulation of boost converter with power factor correction in continuous conduction mode is represented by using MATLAB SIMULINK software. Yu Yu Khin | Yan Aung Oo "Design and Simulation of Power Factor Correction Boost Converter using Hysteresis Control" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-5 , August 2019, URL: https://www.ijtsrd.com/papers/ijtsrd27905.pdfPaper URL: https://www.ijtsrd.com/engineering/electrical-engineering/27905/design-and-simulation-of-power-factor-correction-boost-converter-using-hysteresis-control/yu-yu-khin
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
Bridgeless CUK Power Factor Corrector with Regulated Output Voltagepaperpublications3
Abstract:A single-phase, bridgeless Cuk AC/DC power factor correction (PFC) rectifier with regulated positive output voltage is proposed in this work. For low output voltage product applications, the rectifier is designed to convert high input voltage to low output voltage. This work presents bridgeless single-phase AC-DC power factor correction (PFC) rectifier based on Cuk topology. The topology does not possess input diode bridge and have only single semiconductor switches in the current owing path during each interval of the switching cycle, which resulting in less conduction losses and better thermal management. This topology is designed to work in discontinuous conduction mode (DCM). The advantages of Cuk converter are also available when bridgeless circuit topology is introduced. The operation is symmetrical in two half-line cycles of input voltage. In conventional, output voltage varies according to input voltage. A closed loop control technique is designed to regulate the output voltage in the desired level. Performance and applicability of this converter is presented on the basis of simulation in MATLAB/SIMULINK.
Hardware Implementation of Single Phase Power Factor Correction System using ...IAES-IJPEDS
Rapid increase of consumers in electronics devices and the use of mains rectification circuits inside these electronic devices is the root cause of mains harmonic distortion. Automatic power factor correction techniques can be applied to the industries, power systems and households to make them stable inturns increases the efficiency of system as well as the apparatus. This paper deals with the hardware design of active power factor correction circuit employing boost converter which is used to boost the DC voltages with a controller based on PID control strategy. The pulses given to power switches by pulse width modulation techniques generated by utilizing micro-controller board, Arduino thus obviating the need of complex hardware circuitry. MATLAB/SIMULINK was used to design and tune the PID controller parameters. The simulation results are matching with the predictions and the same was implemented as hardware. The waveforms various test points and across capacitors were obtained, studied and compared with the theoretical waveforms and are found to be in precise proximity of theoretical waveforms.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
A DAPTIVE S UPPLY V OLTAGE M ANAGEMENT F OR L OW P OWER L OGIC C IRCU...VLSICS Design
With the rise in demand of portable hand held devic
es and with the rise in application of wireless sen
sor
networks and RFID reduction of total power consumpt
ion has become a necessity. To save power we
operate the logic circuitry of our devices at sub-t
hreshold. In sub-threshold the drain current is
exponentially dependent on the threshold voltage he
nce the threshold variation causes profound variati
on
of I
ON
and I
OFF
the ratio of which affect the speed of a circuit d
rastically. So to mitigate this problem we
present a adaptive power management circuit which w
ill determine the minimum required supply voltage
to meet the timing requirement. Also to reduce the
power overhead and avoid bulky coil and EMI noise
we used the switch capacitor power regulator to reg
ulate and manage power instead of linear dropout
(LDO) and Inductor base switch mode power converter
Electrical Discharge Machining Flyback Converter using UC3842 Current Mode PW...IJPEDS-IAES
This paper presents a current mode Pulse Width Modulation (PWM) controlled Flyback converter using UC3842 for Electrical Discharge Machining current generator control circuit. Circuit simplicity and high efficiency can be achieved by a Flyback converter with current mode PWM controller. The behaviors of the system's operation is analyzed and discussed by varying the load resistance. Matlab sofware is used to simulate the Flyback converter where a prototype has been built and tested to verify its performance.
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
Biotechnology and Bio Engineering,
Environmental Engineering,
Petroleum and Mining Engineering,
Marine and Agriculture engineering,
Aerospace Engineering.
A Five – Level Integrated AC – DC ConverterIJTET Journal
This paper presents the implementation of a new five – level integrated AC – DC converter with high input power factor and reduced input current harmonics complied with IEC1000-3-2 harmonic standards for electrical equipments. The proposed topology is a combination of boost input power factor pre – regulator and five – level DC – DC converter. The single – stage PFC (SSPFC) approach used in this topology is an alternative solution to low – power and cost – effective applications.
Similar to Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator (20)
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Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
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.
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Runway Orientation Based on the Wind Rose Diagram.pptx
Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
1. IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
e-ISSN: 2278-1676,p-ISSN: 2320-3331, Volume 8, Issue 1 (Nov. - Dec. 2013), PP 56-62
www.iosrjournals.org
www.iosrjournals.org 56 | Page
Design and Simulation of PFC Circuit for AC/DC Converter
Based on PWM Boost Regulator
Mahmoud Milad Alagele, Adel A M Abosdel
Engineering Academy-Tajoura, Al Zaytuna University
Abstract: In this paper a simple power factor correction PFC circuit was designed, simulated and tested for
AC/DC converter which generates input current harmonics due to its non-linear characteristics. PFC was
achieved through current harmonics mitigation by using PWM boost regulator. The circuit utilizes the charging
and disc arching increments of boost inductor current to shape a sinusoidal input current. Inductor current was
controlled by means of PWM controller. The controller accepts two feed back signals, the first is the inductor
current and the other is the output voltage of the AC/DC converter. The simulation results of fast fourier
transform FFT show a grate reduction in current harmonic which in turns tends to a grate improvement in
power factor.
I. Introduction
Currently, the electrical power industry has grown rapidly and loads are changing from simple, non-
electronic loads such as tungsten lamps, motors, relays and resistive heaters to electronic ones such as
fluorescent lamps, motors with solid-state drivers and industrial drives. These electronic loads (also known as
non-linear loads which draw a non-sinusoidal current even when the supply voltage is perfectly sinusoidal) [1]
are the major sources of excessive current harmonics which leads to power quality PQ pollution introduced in
electrical grids. The current harmonics has a significant effect on customer loads in a form of heating, distortion
or operation malfunction.
Harmonic disturbances are the most researched part of all power quality disturbances, especially over
the past two decades. The interest in harmonics research can largely be attributed to the advance in power
electronics technologies, and this driven by the desire to have more energy efficient equipment and greater
control of equipment operation. PFC and harmonics mitigation technologies can be essentially classified into
two main categories 1) Passive methods and 2) Active methods
The first methods are simply based on the use of RLC filter that offer a low impedance path for
unwanted current harmonics and drive it back away from the load under consideration. These filters have no
switches and hence no electromagnetic interference emissions EMI. Beside that it is very simple, robust and has
low cost of implementation. However, their performance lower when compared to active circuits, they are heavy
bulky specially when designed for low harmonics mitigations. Passive filters are employed either to shunt the
harmonic currents off the line or to block their flow between parts of the system by tuning the elements to create
a resonance at a selected harmonic frequency [2].
The second technology use switching circuits controlled actively. Some of active technologies based on
harmonics-injection techniques and called active filters. The active filter senses the harmonics distortion, and
injects currents that are 180 degrees out of phase with the harmonic frequencies that exist in the system. They
have the distinct advantage that they do not resonate with the system. They can be used in very difficult
circumstances where passive filters cannot lies. They can also address more than one harmonic at a time and
combat other power quality problems such as flicker [3]. An other active technique are based on DC-DC
switching converters filters that usually applied to the circuits that contain AC to DC converter such as DC
motor drive, switched mode power supply and battery chargers. These types of filters are based on current wave
shaping technique in which the line current is forced to follow the sinusoidal line voltage. A controlled high
frequency pulse width modulation (PWM) applied on the DC-DC converter which is the main component of the
filter
Standardization activities in this area of harmonics limitation have been carried out for many years. As
early as 1982, the International Electrotechnical Committee - IEC published its standard IEC 555-2, which was
also adopted in 1987 as European standard EN 60555-2, by the European Committee for Electrotechnical
Standardization - CENELEC. IEC 555-2 standard has been replaced in 1995 by standard IEC 1000-3-2, also
adopted by CENELEC as European standard EN 61000-3-2 (IEC Standards 1998). Standard IEC 1000-3-2
applies to equipment with a rated current of up to and including 16A rms per phase which is to be connected to
50Hz or 60Hz, 220-240Vrms single-phase, or 380-415Vrms three-phase mains [4].
2. Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
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II. The Proposed Pfc Circuit
The proposed PFC circuit is designed for AC-DC converter and it considered as nonlinear load. The
PFC circuit is essentially based on current wave shaping technique. Boost DC-DC regulator with high frequency
PWM controller are utilized, the controller gets the two control signals and generate the PWM switching pulses
accordingly as shown in figure 1.
Feeding the input current reference signal and the DC voltage ripple reference into the switching
controller will yield both harmonic reduction and DC voltage regulation. The principle of operation for DC-DC
switching regulator harmonic filtering is related to the topology of DC-DC converter through which PWM is
performed. Among the different power regulators topologies boost converter shown in Figure.1 is the most
suitable one, where the boost inductor is in series with the ac power line. This result in minimum conducted
electromagnetic interference (EMI) at the line when the circuit operates in continuous conduction mode (CCM)
[5].
load
Vo
VL
PWM
MOSFET
Control stage
Line voltage
refernce
Inductor current
sample
Controlling signal
Boost inductor
IL
Figure 1: Boost DC-DC Switching Converter Filter
For our boost regulator topology, the input current shaping is performed by controlling the amplitude of
boost inductor current, and this in turns is done through the controlling or the modulation of switching pulses.
When the boost switch is turned ON, the inductor current tends to rise due to charging of boost
inductor, and when the switch turned OFF, the inductor current will decay down by discharging through boost
capacitor. The rise increment is given by equation.1 [6]. These increments up and down of boost inductor
current are the key of current shaping.
s
L
FL
DtV
i
)(2
(1)
where
Li Increment in inductor current
V(t) Instantaneous phase voltage
D Duty cycle of boost switch
L Boost inductor
Fs Switching frequency of boost converter
3. Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
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Time
voltageandcurrentfeedbacksignals
Current's feed back signal
Sinusoidal reference
Increment in inductor current signal
Figure.2 Simulation Shows How the Boost Inductors Ripples Follow the Sinusoidal Reference.
III. Powr Stage Design
The parameters of the designed power stage are listed in Table.1, in which the converter parameter
include boost inductance boost capacitance, and also input line voltage, DC output voltage and rated power.
Table.1 Parameters of ASD with Inherent Boost DC-DC Switching Converter Filter
Parameter Value
line voltage
DC output voltage
Motor power
Boost inductance
Boost capacitance
110 V rms
300 V
1 KW
1 mH
6200 μF
A) Boost Inductance
It is one of the keys components in the design. The value of this inductor significantly affects the ripple
current due to switching operation of boost converter. Inductance value was calculated to give an acceptable
level of ripple current which is chosen between 10% and 20% of the peak value. The peak to peak ripple current
for any input/output voltage combination can be approximately found by the formula given in equation.2 [7].the
value of boost inductance also affect the regulator’s mode of operation, higher inductance value moves the
regulator to work in discontinues conduction mode DCM mode where the current does reach the zero level
which not preferred due to its EMI pollution.
OUTDC
INOUTDCIN
pp
VLf
VVV
I
)(
(2)
Where
INV Peak value of input full wave rectified waveform
OUTDCV Output DC voltage
f Switching frequency
L Boost inductance
For the values of line voltage = 110 V rms, output DC voltage = 300 V, input current = 9.82 A rms and
switching frequency of 20 K Hz, the inductance value is calculated and found to be 1 mH.
B) Boost capacitance
The capacitance was calculated using the formula in equation 3. [8],
4. Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
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2
2
2
1
2
VV
tP
C HLD
OUT
(3)
Where
P Rated output power
HLDt Holdup time
V1 Capacitor voltage at the beginning of HLDt
V1 Capacitor voltage at the end of HLDt
The parameters that affect the choice of the boost capacitance include:
Holdup time capability which is the amount of time at rated output power that will take the
capacitor voltage to discharge to a minimum operating voltage.
Output DC ripples current.
For holdup time of 20 ms, V1 at the rated output DC voltage, V2 of 290 V and rated power of 1 KW, the boost
capacitance is calculated to be 6200 μF.
IV. PWM Controller Design
PWM controller responsible of generating switching pulses for boost regulator to perform two
functions; sinusoidal current shaping and maintaining constant and stable output voltage. For this reasons the
controller is designed with two feedback signal, one from output voltage of the converter and the other from
input line current which is equivalent to boost inductor current as shown in figure (3).
Low pass
filter
Out put
voltage
of the
converter
Reference output
voltage +
-
PI
Controler
Gian
Sinusoidal reference
of line voltage
×
+
-
Boost inductor current
Gian
Gate
driver
Output PWM pulses
Figure 3: PWM Controller with Two Feed Back Loops
Low pass filter is used to control the out put ripple voltage of the converter and the reference voltage is
used to select the required level of output voltage. Sinusoidal reference is taken as pattern over which the line
current is shaped. Gains are used to modify the signal to next controlling stage. The error signal that used as an
input for gate driver is generated from comparing the boost current with modified sinusoidal reference after the
product. Gate driver generate positive pulse when the error is positive and zero voltage when the error is
negative and it works as PWM modulator.
V. Simulation Results
CCM boost converter was simulation by Matlab, the effect of duty cycle on inductor current saw tooth
and output voltage are monitored and calculate.
Simulink model was used to simulate a PFC circuit for single phase AC/DC converter; the converter
can also work as Adjustable Speed Drive ASD by adjusting the output voltage reference in PWM controller.
The fast Fourier Transform FFT analysis was applied to the input current of ASD to calculate the harmonic
content of the input current which used to calculate the power factor of the ASD circuit before and after PFC.
Figure 4 shows the input line current after PFC, it is clear that the current tends to rush up at the
beginning of operation for a part of half cycle. This is because the output capacitor is empty of charge and works
as short circuit at that point. This problem can be solved by using a soft starting circuit which is out of our
scope.
In figure 5, the inductor current (input current) appears as saw tooth due to charging and discharging
phases of boost inductance. The conduction point between charging and discharging is kept at none zero value
which indicates that the converter works in CCM.
5. Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
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Figure 4: Shows the Input Line Current after PFC
-20
-15
-10
-5
0
5
10
15
20
Time ( 0.02 Sec. per cycle )
Inputcurrentinampers
Figure 5: Inductor Current Made of Charging and Discharging Phases
Figure 6 shows the input current plotted over the line voltage. PFC achieve unity displacement factor
that can be noted from zero phase difference between current and voltage. Also PFC achieve near unity
distortion factor due to small harmonics contents of input current and this can be noted visually from a
sinusoidal shape of the current and numerically for the result of FFT analyser.
Voltage(x1V),Current(÷5A)
Figure 6: Shows The Input Current Plotted Over The Line Voltage.
6. Design and Simulation of PFC Circuit for AC/DC Converter Based on PWM Boost Regulator
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The FFT analysis was applied to the input line current generated by the Matlab simulation model. The
ASD model is designed to work at a maximum DC output voltage of 300 V, and load of 80 Ω. All
measurements were taken at this operating point. Analysis was performed before and after PFC.
The harmonics plot prior to the mitigation is shown in Figure 7. It shows a significant 3rd
, 17th
and 19th
harmonics of 4.85 V, 4.85 V and 9.26 V respectively. Exact odd harmonic levels are listed in Table 2. Different
RMS values of phase current are given in Table 3.
Figure 7: Odd Harmonics Plot Prior to the Mitigation
Table 2:. Odd Harmonics Levels Prior to the PFC
Harmonic Order DC 1st
3rd
7th
13th
17th
19th
Harmonic
Amplitude in A
0.00 9.26 4.85 0.86 0.86 4.85 9.26
Table 3: RMS Values of Phase Current before PFC
Total RMS Current DC Current
Fundamental
RMS Current
Harmonics
RMS Current
10.5 A 0.00 A 6.55 A 8 A
Harmonics mitigation are achieved by using inherent boost DC-DC switching regulator in which harmonics
levels were significantly reduced. Figure 8. shows the odd harmonics plot after mitigation. Exact odd harmonic
levels are listed in Table 4. Different RMS values of input phase current are given in Table 5.
Figure 8: Odd Harmonics After Mitigation
Table 4: Odd Harmonics Levels after PFC
Harmonic Order DC 1st
3rd
5th
7th
9th
19th
Harmonic
Amplitude in A
0.6 13.97 0.56 0.48 0.34 0.13 0.76
Table 5: RMS Values of Phase Current after PFC
Total RMS Current DC Current
Fundamental
RMS Current
Harmonics
RMS Current
9.99 A 0.11 A 9.88 A 1.48 A