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Proceedings ArticleDOI

High efficiency telecom rectifier using a novel soft-switched boost-based input current shaper

R. Streit, +1 more
- pp 720-726
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TLDR
In this article, a snubber circuit for the constant frequency PWM boost converter is presented to provide soft switching transitions for the power switches and thus to reduce the power losses, component stresses, and noise generation.
Abstract: 
A novel snubber circuit for the constant frequency pulsewidth-modulation (PWM) boost converter is presented to provide soft-switching transitions for the power switches and thus to reduce the power losses, component stresses, and noise generation. The proposed topology is very useful for the input current shapers in AC-AC applications. The operation of the circuit including its control block is explained and illustrated for a 1.5 kW, 100 kHz high-performance power-factor-corrected telecommunication rectifier. >

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Citations
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Journal ArticleDOI

Novel zero-voltage-transition PWM converters

Guichao Hua, +3 more
TL;DR: In this paper, a class of zero voltage transition (ZVT) power converters is proposed in which both the transistor and the rectifier operate with zero voltage switching and are subjected to minimum voltage and current stresses.
Journal ArticleDOI

Novel zero-current-transition PWM converters

Guichao Hua, +3 more
TL;DR: In this article, a new family of zero-current transition (ZCT) pulsewidth-modulated (PWM) converters is proposed for high power applications where the minority-carrier semiconductor devices (such as IGBTs, BJTs, and MCTs) are predominantly used as the power switches.
Journal ArticleDOI

State-of-the-art, single-phase, active power-factor-correction techniques for high-power applications - an overview

Milan M. Jovanovic, +1 more
- 31 May 2005 - 
TL;DR: The merits and limitations of several PFC techniques used in today's network-server and telecom power supplies to maximize their conversion efficiencies are discussed, and the effect of recent advancements in semiconductor technology on the performance and design considerations of PFC converters is discussed.
Journal ArticleDOI

Soft-switching techniques in PWM converters

Guichao Hua, +1 more
- 01 Dec 1995 - 
TL;DR: Three classes of zero-voltage soft-switching PWM converters and their merits and limitations are assessed, and experimental results of several prototype of converters are presented to illustrate each class.
Journal ArticleDOI

Novel ZVT-PWM converters with active snubbers

Ching-Jung Tseng, +1 more
- 01 Sep 1998 - 
TL;DR: A 750 W 80 kHz prototype of the boost ZVT-PWM converter has been built in the laboratory to experimentally verify the analysis and a detailed design procedure of the proposed active snubber cell is also presented in this paper.
References
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Average current mode control of switching power supplies

L. H. Dixon
TL;DR: Average current mode control may be used effectively to control currents other than inductor current, allowing a much broader range of topological application.
Journal ArticleDOI

A novel soft-switching full-bridge DC/DC converter: Analysis, design considerations, and experimental results at 1.5 kW, 100 kHz

R. Redl, +2 more
TL;DR: In this article, the authors presented an improved soft-switching full-bridge converter which is especially suitable for high-power application (e.g. more than 1 kW output) because of its inherently high efficiency.
Proceedings ArticleDOI

Noise suppression by magnetic snubbers in switching power converters

Toshiharu Ninomiya, +3 more
TL;DR: The mechanism of noise suppression by a magnetic snubber is analyzed quantitatively and the effects of the magnetic characteristics of the saturable reactor and the linear inductor on the surge and noise are examined by comparing analytical and experimental results.