A review of single-phase improved power quality AC-DC converters (original) (raw)

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.

Comparative Analysis and Performance Investigation Of Single-Phase Improved Power Quality Converter

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.

A review of single phase power factor correction A.C.-D.C. converters

2013 IEEE Conference on Clean Energy and Technology (CEAT), 2013

The demand for solid state A.C.-D.C. converters to enhance power quality in the expression of P.F.C. (Power Factor Correction) impels the proposal of miscellaneous topologies. These converters are expected to reduce the total harmonic distortion (T.H.D.) at A.C. input and accurately regulate D.C. output in Buck, Boost, Buck-Boost and multi-level models considering both unidirectional and bi-directional power flows. This paper presents an exhaustive review of I.P.Q.c.s (improved power quality converters) configurations, design features, and selection for specific. The paper is aimed to present a broad perspective on the status of I.P.Q.c. technology to researchers, designers and application engineers working on clean energy and smart grid fields.

Design of Single Stage Single Switch Improved Power Quality AC-DC converter

2014

AC-DC converter are increasingly used in application such as UPS, battery Charger and in application where size, weight and cost are major concern. Since the power converters draw pulsed current from the utility line current harmonics are injected to the electrical network. Power quality is an issue that is becoming important to electricity consumers at all level of usage. Sensitive equipment and non-linear loads are common place in both industrial and domestic environment. Harmonic distortion can result in malfunction of sensitive equipment and generators. Power factor corrected convertor is increasingly usedin industry to improve input current quality and regulate the output voltage of front end convertor.This paper presents a Single Stage Single Switch Power Factor Corrected Converter. This converter achieves power factor correction and regulates output voltage by using only one switch. In this paper a design solution is presented to avoid the DC bus voltage stress at light load by suitable selection of boost inductor using Equal Area Criterion (EAC). Simulation studies done using ORCADsoftware and actual test results are compared and analyzed. The input current waveform is found to be sinusoidal and in phase with input voltage, the voltage stress is quiet insignificant.DC bus voltage stress during light load condition is observed. Under closed loop condition the stress was found almost eliminated.

Single-Phase Switched Capacitor AC-DC Step Down Converters for Improved Power Quality

2017 IEEE Region 10 Humanitarian Technology Conference (R10-HTC), 2017

Two novel topologies for single-phase AC-DC buck converter using switched capacitor network have been proposed. The first proposed topology modified the conventional two stage buck converter by introducing a switched capacitor network in between stages whereas the second topology introduced two switched capacitor networks, one for each half cycle of line frequency of operation. The proposed converters offered better efficiency, reduced total harmonic distortion (THD) and improved input power factor (PF) using suitable power factor correction (PFC) control. These highly efficient proposed schemes can be used in the lighting application of new generation LEDs.

Single-Phase Based Power Quality Control in Cascade Multilevel Converters

Cascaded multilevel inverters coordinate a medium-voltage yield considering a game plan relationship of intensity cells which utilize standard low-voltage part setups. This trademark licenses one to achieve eminent yield voltages and data streams besides wonderful availability in view of their trademark section redundancy. On account of these components, the fell multilevel inverter has been seen as a fundamental alternative in the medium-voltage inverter showcase. This paper presents an audit of different topologies, control frameworks and adjust methodologies used by these inverters. Regenerative and impelled topologies are moreover inspected. Applications where the predetermined segments accept a key part are showed up. Finally, future enhancements are tended to. Solid state switch-mode alteration converters have accomplished a created level for upgrading power quality in regards to control factor rectification (PFC), lessened total symphonious curving at information aerating and cooling mains and completely controlled DC yield in buck, support, buck-help and multilevel modes with unidirectional and bidirectional power stream. This paper deals with a thorough review of enhanced power quality converters (IPQCs) setups, control approaches, diagram features, assurance of portions, other related thoughts, and their propriety and decision for specific applications. It is engaged to give a wide range on the status of IPQC development to researchers, fashioners and application engineers wearing down traded mode cooling DC converters.

A design solution to reduce DC bus voltage stress in single switch power quality converter

Power quality is becoming an important issue for electricity consumers at all level of usages. Sensitive equipment and non-linear loads are common in both industrial and domestic environment. Harmonic distortion can result in malfunction of sensitive equipments and generators. Power factor corrected converter is increasingly used in industry to improve input current quality and regulate the output voltage of front end converter. This paper presents a Single Switch Power Quality Converter which achieves both power factor correction and output voltage regulation by using only one switch. This paper deals with the design method in the reduction of DC bus voltage stress during light load, by selecting proper boost inductor using Equal Area Criterion (EAC).

Three Phase Multi-pulse AC-DC Converters for Power Quality Improvement: A Review

2014

Recently three-phase ac-dc converters have been developed to an advance level having the improved power quality in power-factor correction reduced THD at the supply side. These ac-dc converters also have the multi-pulse mode with the unidirectional and bidirectional power flow. This paper presents the review of three-phase multi-pulse improved power quality ac-dc converter (IPQC) configuration, comparative factors and selection of specific applications.

Versatile Control of Unidirectional AC–DC Boost Converters for Power Quality Mitigation

—This paper introduces a versatile control scheme for unidirectional ac–dc boost converters for the purpose of mitigating grid power quality. Since most power factor correction circuits available in the commercial market utilize unidirectional ac–dc boost converter topologies, this is an almost no-cost solution for compensating harmonic current and reactive power in residential applications. Harmonic current and reactive power compensation methods in the unidirectional ac–dc boost converter are investigated. The additional focus of this paper is to quantify the input current distortions by the unidirectional ac–dc boost converter used for supplying not only active power to the load but also reac-tive power. Due to input current distortions, the amount of reactive power injected from an individual converter to the grid should be restricted. Experimental results are presented to validate the effectiveness of the proposed control method. Index Terms—Active power filter (APF), cusp distortion, harmonic current compensation (HCC), power factor correction (PFC), reactive power compensation (RPC), unidirectional ac–dc boost converter.