A review of single phase power factor correction A.C.-D.C. converters (original) (raw)
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A review of single-phase improved power quality AC-DC converters
IEEE Transactions on Industrial Electronics, 2003
Solid-state switch-mode rectification converters have reached a matured level for improving power quality in terms of power-factor correction (PFC), reduced total harmonic distortion at input ac mains and precisely regulated dc output in buck, boost, buck-boost and multilevel modes with unidirectional and bidirectional power flow. This paper deals with a comprehensive review of improved power quality converters (IPQCs) configurations, control approaches, design features, selection of components, other related considerations, and their suitability and selection for specific applications. It is targeted to provide a wide spectrum on the status of IPQC technology to researchers, designers and application engineers working on switched-mode ac-dc converters. A classified list of more than 450 research publications on the state of art of IPQC is also given for a quick reference.
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International Journal of Research in Advent Technology, 2019
This paper deals with the comparative analysis and performance investigation of single-phase improved power quality converters to compensate the harmonics of non-linear load in order to improve the power quality. The comparative analysis of various IPQC topologies and detailed performance investigation of unidirectional boost converter has been done. Various simulations have been presented under the steady state for comparative performance evaluation to achieve better utilization and control of IPQCs. The results show an inherent power quality improvement in terms of reduced Total Harmonic Distortion (THD) of source current and Power Factor Correction (PFC) properties to a large extent. The simulation results have been further aided and confirmed by experimental results obtained on a hardware prototype of a single phase, unidirectional AC/DC boost-converter.
IEEE Transactions on Industrial Electronics, 2005
This paper presents a review of power-factor-correction (PFC) circuits for low-and medium-power single-phase power supplies. The main idea is not just to show the state of the art of this topic but to select the most interesting topologies for each application depending on the power level, the input voltage range, and the output voltage. Since IEC 61000-3-2 regulations came into force, many new topologies have been presented trying to obtain a cost-effective solution to reduce the input current harmonic content. Each one of them has its application range due to the inherent characteristics of the topology. Obviously, not every converter is useful for the same application. This is especially perceptible in PFC circuits due to the large amount of different solutions. Hence, this paper tries to show the most appropriate topologies for each application, being the input power and the IEC 61000-3-2 Class some of the main parameters to select it. The scope of the paper is focused on single-phase power supplies belonging to IEC 61000-3-2 Class A and Class D with an input power level below 4 kW.
2014
Modern power electronic systems operate with different voltage and/or frequency rating such as Adjustable speed drive, Micro Grid, Uninterruptable Power Supplies (UPS) and High Voltage DC Transmission Systems. To match power electronic systems with the mains supply, DC link converters are used. The first stage of the DC link converter is the AC/DC conversion (rectifier). The rectifier type utility interface has substantial harmonics result in poor power quality due to low power factor and high harmonic distortion. Power Factor Correction (PFC) schemes are effective methods to mitigate harmonics and address this issue. In this thesis, analyses of three approaches for high power density rectifiers are developed. In the first study, modular three phase boost rectifiers operating in DCM are coupled in order to increase the power density. Major drawback of this committee members Dr. Shankar P. Bhattacharyya and Dr.Won-Jong Kim for their time and consideration. A special thanks to my sponsor, Kuwait Institute of Technology, for awarding me a scholarship. I would like to thank Dr. Abdullrahman Alothman for his support. Finally, I would like to thank my colleagues in the Power Electronics and
Review of AC-DC power electronic converter topologies for power factor correction
International Journal of Power Electronics and Drive System (IJPEDS) , 2019
Increased harmonic content and low power factor in power systems caused by power converters have been of great concern. To overcome this, several converter topologies employing advanced semiconductor devices and control schemes have been proposed. The aim of this paper is to identify a low cost, small size, efficient and reliable ac to dc converter to meet the input performance index of uninterrupted power supply. In this paper, comparison between three converters namely AC-DC Cuk rectifier, Fly back converter & Interleaved SEPIC converter have been carried out. For the above converters both bridged and bridgeless topologies have been analysed. The working of all the three types of converter has been illustrated with relevant waveforms followed by the simulation results. Comparison of the three converters have been done based on the parameters namely Displacement Factor, Supply Power Factor& supply THD. The results are verified.
Evaluation of Active Power Factor Correction Techniques in A Single-Phase AC-DC Boost Converter
This thesis deals with the topic active single phase power factor correction circuits to be used in various applications. The boost-type power factor correction topology was simulated using Matlab/Simulink with a simplified dynamic model of the current stage. Power factor is the ratio of real power (kilo Watt) which is actually consumed by the equipment, to apparent power (kilo Volt Ampere) which is what must be supplied by the network. Power Factor is a measure of how effectively your system uses its electricity supply. A system with poor power factor draws more apparent power than real power. A low power factor is classed as less than 0.9. Certain loads such as inductive loads and capacitive loads reduce the value of this factor.
A review of three-phase improved power quality AC-DC converters
IEEE Transactions on Industrial Electronics, 2004
Three-phase ac-dc converters have been developed to a matured level with improved power quality in terms of power-factor correction, reduced total harmonic distortion at input ac mains, and regulated dc output in buck, boost, buck-boost, multilevel, and multipulse modes with unidirectional and bidirectional power flow. This paper presents an exhaustive review of three-phase improved power quality ac-dc converters (IPQCs) configurations, control strategies, selection of components, comparative factors, recent trends, their suitability, and selection for specific applications. It is aimed at presenting a state of the art on the IPQC technology to researchers, designers, and application engineers dealing with three-phase ac-dc converters. A classified list of around 450 research articles on IPQCs is also appended for a quick reference.
Quasi Active Power Factor Correction Scheme for High Efficiency Ac/Dc
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Harmonic pollution and low power factor in power systems caused by power converters have been of great concern. To overcome these problems several converter topologies using advanced semiconductor devices and control schemes have been proposed. This investigation is to identify a low cost, small size, efficient and reliable ac to dc converter to meet the input performance index of UPS. The performance of single phase and three phase ac to dc converter along with various control techniques are studied and compared. This project presents a novel ac/dc converter based on a quasi-active power factor correction (PFC) scheme. In the proposed circuit, the power factor is improved by using an auxiliary winding coupled to the transformer of a cascade dc/dc fly back converter. The auxiliary winding is placed between the input rectifier and the lowfrequency filter capacitor to serve as a magnetic switch to drive an input inductor. Since the dc/dc converter is operated at high-switching frequency, the auxiliary windings produce a high frequency pulsating source such that the input current conduction angle is significantly lengthened and the input current harmonics is reduced. Since the use of a single inductor, the cost z reduced a lot and the efficiency of the system is improved. The power factor is maintained constant by using a buffer capacitor in parallel to the system for compensating the inductive components. It eliminates the use of active switch and control circuit for PFC, which results in lower cost and higher efficiency. Finally an R-load is applied and simulation results are presented I.
A review of single-phase PFC topologies based on the boost converter
2010 9th IEEE/IAS International Conference on Industry Applications, INDUSCON 2010, 2010
The need for solid-state ac-dc converters to improve power quality in terms of power-factor correction (PFC), reduced total harmonic distortion at input ac mains, and precisely regulated dc output have motivated the proposal of several topologies based on classical converters such as buck, boost, and buck-boost. Additionally, novel control techniques dedicated to PFC have also been introduced, motivating the manufacturing of commercial integrated circuits to impose sinusoidal currents in the front-end stage of switch-mode converters.