Journal ArticleDOI
A comparison of voltage-mode soft-switching methods for PWM converters
Kevin M. Smith,Keyue Smedley +1 more
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TLDR
In this paper, a comparison study was conducted to characterize the loss mechanisms, component stresses, and overall efficiencies of a group of voltage-mode soft-switching pulse width modulation (PWM) methods, including two methods developed by the authors.Abstract:
A comparison study was conducted to characterize the loss mechanisms, component stresses, and overall efficiencies of a group of voltage-mode soft-switching pulse width modulation (PWM) methods, including two methods developed by the authors. All soft-switching methods in the selected group allow zero voltage turn-on and turn-off of the main switch and utilize a single auxiliary switch with some resonant components. Advantages and disadvantages are identified for each method. Experimental verification for each soft-switching method is provided. It was found that only those methods that softly switch the auxiliary switch, minimize redirection current, and recover the auxiliary circuit energy improve efficiency over most of the load range.read more
Citations
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Journal ArticleDOI
State-of-the-art, single-phase, active power-factor-correction techniques for high-power applications - an overview
Milan M. Jovanovic,Yungtaek Jang +1 more
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
A high-efficiency grid-tie battery energy storage system
TL;DR: In this paper, a high-efficiency grid-tie lithium-ion-battery-based energy storage system was proposed, which consists of a LiFePO4-based battery energy storage and a high efficiency bidirectional ac-dc converter.
Journal ArticleDOI
Novel ZVT-PWM converters with active snubbers
Ching-Jung Tseng,Chern-Lin Chen +1 more
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.
Journal ArticleDOI
A new ZVT-ZCT-PWM DC-DC converter
TL;DR: In this article, a new active snubber cell is proposed to contrive a new family of pulse width modulated (PWM) converters, which can operate with soft switching successfully at very wide line and load ranges and at considerably high frequencies.
Journal ArticleDOI
A ZCT auxiliary commutation circuit for interleaved boost converters operating in critical conduction mode
TL;DR: In this paper, a power-factor-corrector (PFC) circuit based on interleaved boost converters in critical conduction mode (C-DCM) with a zero current transition (ZCT) circuit was investigated.
References
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Book
Principles of power electronics
TL;DR: In this paper, the authors present a review of semiconductor devices and their properties, including gate and base drives, and power transistors, as well as feedback control design and an overview of ancillary issues.
Journal ArticleDOI
Novel zero-voltage-transition PWM converters
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.
Proceedings ArticleDOI
High efficiency telecom rectifier using a novel soft-switched boost-based input current shaper
R. Streit,D. Tollik +1 more
TL;DR: 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.
Proceedings ArticleDOI
An improved zero-voltage-switched PWM converter using a saturable inductor
TL;DR: In this paper, the saturable inductor is employed in the full-bridge (FB) zero-voltage-switched (ZVS) PWM converter to improve its performance.
Proceedings ArticleDOI
A novel zero-voltage switched PWM boost converter
TL;DR: A novel, zero-voltage switched (ZVS) PWM boost converter that combines soft-switching with constant frequency operation is proposed in this paper and a set of design guidelines is developed.