A review of single-phase improved power quality ac~dc converters

Singh, Bhim; Chandra, A.; Al‐Haddad, Kamal; Pandey, Ashish; Kothari, D.P.

doi:10.1109/tie.2003.817609

Cited by 1,158 publications

(436 citation statements)

References 355 publications

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“…The basic circuit of PFC [10] is quite simple but it does not provide the acceptable values of total harmonic distortion (THD) of the input current. To improve the values of THD the multiphase topology of PFC is applied.…”

Section: The Charger Designmentioning

confidence: 99%

Modular Power Supply for Micro Resistance Welding

Bondarenko

Verbytskyi

Prokopets

et al. 2017

Electrical, Control and Communication Engineering

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-The study is devoted to the important issue of enhancing the circuitry and characteristics of power supplies for micro resistance welding machines. The aim of the research is to provide high quality input current and to increase the energy efficiency of the output pulse generator by means of improving the circuit topologies of the power supply main blocks. In study, the principle of constructing the power supply for micro resistance welding, which provides high values of output welding current and high accuracy of welding pulse formation, makes it possible to reduce energy losses, and provides high quality of consumed input current, is represented. The multiphase topology of the charger with power factor correction based on SEPIC converters is suggested as the most efficient for charging the supercapacitor storage module. The multicell topology of the supercapacitor energy storage with voltage equalizing is presented. The parameters of the converter cells are evaluated. The calculations of energy efficiency of the power supply's input and output converters based on suggested topologies are carried out and verified in MATLAB Simulink. The power factor value greater than 99 % is derived.

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Section: The Charger Designmentioning

confidence: 99%

Modular Power Supply for Micro Resistance Welding

Bondarenko

Verbytskyi

Prokopets

et al. 2017

Electrical, Control and Communication Engineering

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“…From the comprehensive study of different PFC topologies and their performance evaluations [1] it is found that, single switch converter topologies with current multiplier control in CCM operation leads to better stability. The push-pull and half-bridge (two-switch) converters have equal switching losses as compared to single switch converters such as flyback, Cuk SEPIC, and Zeta.…”

Section: Iiliterature Surveymentioning

confidence: 99%

A Bridgeless High Power Factor Buck Converter Based Dual Output SMPS

ath¹

2015

IJAREEIE

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This paper introduces a bridgeless high power factor buck converter based dual output SMPS particularly for low power applications. The recently modified improved power quality SMPS topologies are designed for medium and high power applications. When they are used for low power applications their efficiency will be very low. The proposed SMPS specially designed for low power applications. It consisting of a bridgeless buck converter front end designed to operate in discontinuous capacitor voltage mode (DCVM), a half bridge inverter circuit, a multi winding transformer for energy transferring and isolation, and rectifier circuit at the transformer secondary. The converter has only one switch which is controlled using a voltage follower approach. As multiple outputs at low power levels are obtained it can be used for low power applications with a high efficiency and improved power factor. KEYWORDS: Bridgeless Buck Converter, SMPS, DCVM operation, PI Controller, Half Bridge Inverter I.INTRODUCTIONSwitched Mode Power Supplies are widely used for powering up different parts in a personal computer by generating multiple Dc voltages from single phase AC supply. But SMPS operation usually suffers from low power factor at the input AC mains. The reason is the commonly used diode bridge rectifier front end of the SMPS. Bridgeless power factor correction converter at the front end of the SMPS is expected to draw a sinusoidal input current at high power factor. Improvement in power quality also results in better efficiency. The existing topologies are mainly for medium and high power applications. SEPIC and Cuk based front end topologies results in increased number of components. This paper deals with the development of bridgeless rectifier based dual output SMPS specially designed for low power applications. It uses a bridgeless buck converter front end followed by a half bridge inverter connected to the primary side of a transformer with two secondary windings. Secondary side consisting of a rectifier -filter arrangement. The bridgeless buck converter is designed to operate in Discontinuous Capacitor Voltage Mode (DCVM), which reduces the complexity in control as well as the input filter requirements. II.LITERATURE SURVEYFrom the comprehensive study of different PFC topologies and their performance evaluations [1] it is found that, single switch converter topologies with current multiplier control in CCM operation leads to better stability. The push-pull and half-bridge (two-switch) converters have equal switching losses as compared to single switch converters such as flyback, Cuk SEPIC, and Zeta. But the control scheme seems to be more complex one.A unity power factor multiple isolated outputs switching mode power supply using a single switch offers an improved power factor [2]. The topology is based on a SEPIC converter operating in continuous conduction mode. The SEPIC topology itself increases the number of components also CCM operation requires a complex control.Bridgeless cuk rectifiers can also used for P...

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“…Power factor pre-regulator topology, remains to be an ample choice for low power applications where the power transfer is unidirectional, because of its simplicity of design and control [3].…”

Section: Introductionmentioning

confidence: 99%

Direct Power based Sliding Mode Control of AC-DC Converter with Reduced THD

2018

Teh. vjesn.

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Direct Power based Sliding Mode (DPSMC) control for controlling single phase AC-DC pre regulator assuring unity power factor and stable output voltage under load variation is proposed in this paper. Direct Power Based Control (DPC) commonly applied for three phase circuits, is combined with Sliding mode control (SMC) to control and regulate the single-phase AC-DC pre regulator. The proposed DPSMC apart from being simple to design and robust to parameter variations also helps in reducing the line current distortion inherent to AC-DC Converters. The design of the proposed power based sliding mode control along with its existence condition is discussed. The performance of the proposed method over conventional sliding mode control is assessed through computer simulations and the feasibility of the proposed controller is confirmed through experimental implementation carried out with the help of LabVIEW and sbRIO FPGA development board.

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A review of single-phase improved power quality ac~dc converters

Cited by 1,158 publications

References 355 publications

Modular Power Supply for Micro Resistance Welding

Modular Power Supply for Micro Resistance Welding

A Bridgeless High Power Factor Buck Converter Based Dual Output SMPS

Direct Power based Sliding Mode Control of AC-DC Converter with Reduced THD

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