Comprehensive Study of Single-Phase AC-DC Power Factor Corrected Converters With High-Frequency Isolation

Singh, Bhim; Singh, Sanjeev; Chandra, Ambrish; Al‐Haddad, Kamal

doi:10.1109/tii.2011.2166798

Cited by 363 publications

(195 citation statements)

References 130 publications

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“…The DC link capacitor is calculated as follows [29]: Hence, the value of the DC link capacitor is selected as 990µF.…”

Section: B Ensuring Dcm Operationmentioning

confidence: 99%

Single-Phase Bridgeless Zeta PFC Converter with Reduced Conduction Losses

Khan¹,

Rahim²,

Bakar³

et al. 2015

Journal of Power Electronics

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This paper presents a new single phase front-end ac-dc bridgeless power factor correction (PFC) rectifier topology. The proposed converter achieves a high efficiency over a wide range of input and output voltages, a high power factor, low line current harmonics and both step up and step down voltage conversions. This topology is based on a non-inverting buck-boost (Zeta) converter. In this approach, the input diode bridge is removed and a maximum of one diode conducts in a complete switching period. This reduces the conduction losses and the thermal stresses on the switches when compare to existing PFC topologies. Inherent power factor correction is achieved by operating the converter in the discontinuous conduction mode (DCM) which leads to a simplified control circuit. The characteristics of the proposed design, principles of operation, steady state operation analysis, and control structure are described in this paper. An experimental prototype has been built to demonstrate the feasibility of the new converter. Simulation and experimental results are provided to verify the improved power quality at the AC mains and the lower conduction losses of the converter.

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“…The DC link capacitor is calculated as follows [29]: Hence, the value of the DC link capacitor is selected as 990µF.…”

Section: B Ensuring Dcm Operationmentioning

confidence: 99%

Single-Phase Bridgeless Zeta PFC Converter with Reduced Conduction Losses

Khan¹,

Rahim²,

Bakar³

et al. 2015

Journal of Power Electronics

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“…Although (1) does not contain the LC resonance which can be found in the second order model, it is enough to be utilized for current controller design. If the triangular carrier waveform is employed, and the digital controller and the DPWM are updated once in a switching period, the modulator can be modeled as a ZOH [22].…”

Section: Modeling Of the Bridgeless Pfc Convertermentioning

confidence: 99%

“…Single-phase power factor correction (PFC) converters have been used for many industrial applications such as aircraft power supplies, light-emitting-diode drivers, electronic ballast circuits, and so on [1]- [5]. Among many circuit topologies for PFC operation, the bridgeless PFC topology which does not have the diode bridge for rectification of the input voltage and current is getting popular because the topology features high efficiency and simple control [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Admittance Component for Digitally Controlled Single-Phase Bridgeless PFC Converter

Cho¹,

Mok²,

Lai³

2013

Journal of Power Electronics

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This paper analyzes the effect of the admittance component for the digitally controlled single-phase bridgeless power factor correction (PFC) converter. To do this, it is shown how the digital delay effects such as the digital pulse-width modulation (DPWM) and the computation delays restrict the bandwidth of the converter. After that, the admittance effect of the entire digital control system is analyzed when the bridgeless PFC converter which has the limited bandwidth is connected to the grid. From this, the waveform distortion of the input current is explained and the compensation method for the admittance component is suggested to improve the quality of the input current. Both the simulations and the experiments are performed to verify the analyses taken in this paper for the 1 kW bridgeless PFC converter prototype.

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“…[3, 4, and 8] have formulated BL buck and boost converters, respectively. These converters can offer the voltage buck [3] which restricts the operating range of DC link voltage controlA new family of BL SEPIC [25] and Cuk converters has been described in the literature [5,6] however needs a huge number of elements and has losses connected with it. In this work, a conventional DBR based isolated zeta converter has been considered for simulation analysis which is shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Logic Controller Based Bridgeless Isolated Interleaved Zeta Converter for LED Lamp Driver Application

Thenmozhi

Sharmeela

Natarajan³

et al. 2016

IJPEDS

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In recent times, high-brightness light emitting diodes (HB-LEDs) are developing rapidly and it is confirmed to be the future development in lighting not only because of their high efficiency and high reliability, however also because of their other exceptional features: chromatic variety, shock and vibration resistance, etc. In this paper, a bridgeless (BL) Isolated Interleaved Zeta Converter is proposed for the purpose of reducing the diode failures or losses; the value of output ripples also gets decreased. The proposed BL isolated interleaved zeta converter operating in discontinuous conduction mode (DCM) is used for controlling the brightness of LED Driver with inherent PFC at ac mains using single voltage sensor. The fuzzy logic controller (FLC) is used to adjust the Modulation Index of the voltage controller in order to improve the dynamic response of LED Lamp driver. Based on the error of converter output voltage, FLC is designed to select the optimum Modulation Index of the voltage controller. The proposed LED driver is simulated to achieve a unity power factor at ac mains for a wide range of voltage control and supply voltage fluctuations. Keyword:Diode bridge rectifier Discontinuous conduction High-brightness light emitting Power factor correction LED lamp Zeta converter Copyright © 2016 Institute of Advanced Engineering and Science.All rights reserved. Corresponding Author:Thenmozhi R, Dept of Electrical and Electronics Engineering, Anna University Sarder Patel Road, Old Highways Building, Guindy, Chennai, India Email: thenmozhirresearch@gmail.com INTRODUCTIONHigh-brightness (HB) LEDs are extremely smart light sources because of their exceptional features (high efficiency and prolonged existence, and low-maintenance conditions) [11]. Since they are driven from a DC source, several categories of power switching converter can be employed to adapt primary energy sources to the constraints of HB LEDs [13]. Several researchers have formulated different DC-DC converter topologies in accordance with the conventional DC-DC switching power converters [9, 15 and 16].In contrast, when the primary energy source is the AC line, subsequently certain category of AC-DC converter must be positioned between the line and the HB LEDs [10,12]. It is found that, when the total power managed by these converters is above 25 W, at that time the low-frequency harmonic content of the line current have to satisfy particular rules. For the purpose of lighting equipment, the most extensively employed standard is EN 61000-3-2, Class C [18] [23,24].The bridge rectifiers contribute to high total harmonic distortion (THD), small PF, and low efficiency to the power system. These harmonic currents source for numerous complications are like voltage distortion, noises, heating results in diminished efficiency of the power system. Due to this fact, there is a need for power supplies that obtain current with low harmonic content and have PF close to unity [9]. The traditional boost topology is the most extensively employed topology for the ...

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Comprehensive Study of Single-Phase AC-DC Power Factor Corrected Converters With High-Frequency Isolation

Cited by 363 publications

References 130 publications

Single-Phase Bridgeless Zeta PFC Converter with Reduced Conduction Losses

Single-Phase Bridgeless Zeta PFC Converter with Reduced Conduction Losses

Analysis of the Admittance Component for Digitally Controlled Single-Phase Bridgeless PFC Converter

Fuzzy Logic Controller Based Bridgeless Isolated Interleaved Zeta Converter for LED Lamp Driver Application

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