NDLI: An improved boost converter with coupled inductors and buck-boost type of active clamp

Content Provider	IEEE Xplore Digital Library
Author	Wu, T.-F. Lai, Y.-S. Hung, J.-C. Chen, Y.-M.
Copyright Year	2005
Description	Author affiliation: Power Electron. Appl. Res. Lab., Nat. Chung Cheng Univ., Taiwan, China (Wu, T.-F.; Lai, Y.-S.; Hung, J.-C.; Chen, Y.-M.)
Abstract	This paper proposes an improved boost converter with coupled inductors and buck-boost type of active-clamp feature, PWM control and zero-voltage switching in both main and auxiliary switches. In the converter, the active-clamp circuit is used to eliminate voltage spike induced from the leakage inductor of the coupled inductors. The active switch of the converter can still sustain a proper duty cycle when it operates with a high step-up voltage ratio, reducing voltage stress significantly. A set of passive-clamping circuit is adopted to eliminate undesired resonance between leakage inductor of the coupled inductors and stray capacitor of the boost diode, recovering trapped energy. Thus, conversion efficiency can be improved significantly. A 200 W prototype of the proposed boost converter was built from which experimental results have shown that efficiency can reach as high as 92% and surge can be suppressed effectively.
Starting Page	639
Ending Page	644
File Size	301105
Page Count	6
File Format	PDF
ISBN	0780392086
ISSN	01972618
DOI	10.1109/IAS.2005.1518374
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-02
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switching converters Active inductors Pulse width modulation converters Coupling circuits RLC circuits Switches Pulse width modulation Zero voltage switching Clamps Stress
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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