New Efficient Bridgeless Cuk Rectifiers for PFC Applications

Fardoun, Abbas A.; Ismail, Esam H.; Sabzali, Ahmad J.; Al-Saffar, Mustafa A.

doi:10.1109/tpel.2011.2182662

Cited by 209 publications

(90 citation statements)

References 24 publications

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“…Bridgeless cuk rectifiers can also used for PFC applications [3]. It avoids the bridge circuit and uses only two semiconductor switches.…”

Section: Iiliterature Surveymentioning

confidence: 99%

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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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“…Bridgeless cuk rectifiers can also used for PFC applications [3]. It avoids the bridge circuit and uses only two semiconductor switches.…”

Section: Iiliterature Surveymentioning

confidence: 99%

“…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 PFC applications [3]. It avoids the bridge circuit and uses only two semiconductor switches.…”

mentioning

confidence: 99%

A Bridgeless High Power Factor Buck Converter Based Dual Output SMPS

ath¹

2015

IJAREEIE

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“…The phase shift fixed PWM control is provided for auxiliary switch. The operation and design procedure for the main converter elements are provided in the [2,14].So the design guidelines for designing the auxiliary circuit are discussed. …”

Section: Design Considerationmentioning

confidence: 99%

Efficiency and Power Factor improvement of Bridgeless Softswitched PWM Cuk Converter using Multiplier control approach

Sahoo¹

2013

IOSR-JEEE

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“…It offers several advantages such as natural protection against start-up in rush current, less current ripple at input side, less electromagnetic interference (EMI) in Discontinuous Conduction Mode (DCM) [6]- [8]. The input and output currents are continuous with low ripples compared to SEPIC PFC converter [9]- [14]. Thus, the bridgeless Cuk converter is a potential candidate compared over the basic PFC topologies, especially for low power applications.…”

Section: Introductionmentioning

confidence: 99%