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An Efficiency Improvement Method for Single-phase Boost Converter by Reducing Switching Loss  

Kim Jong-Su (한국해양대학교 선박전자기계공학부)
Oh Sae-Gin (한국해양대학교 운항훈련원)
Park Keun-Oh ((주)코리아쉽메니져스)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.10, no.1, 2006 , pp. 96-103 More about this Journal
Abstract
This paper proposes a new technique for improving the efficiency of single phase high frequency switch mode boost converter. This converter includes an additional boost converter that follows the main hish frequency switching device. The additional converter, which is controlled at lower frequencies, bypasses almost all the current in the main switch and the high frequency switching loss is greatly reduced. Both switching devices are controlled by a simple method; each controller consists of a one-shot multivibrator, a comparator and an AND gate, and the maximum switching frequency can be limited without any clock generator. The converter works cooperatively in high efficiency and acts as though it were a conventional high frequency switch mode converter with one switching device. This paper describes the proposed converter configuration, design, and discusses the steady state performance concerning the switching loss reduction and efficiency improvement. and the proposed method is verified by computer simulation.
Keywords
Boost converter; Soft switching; Switching loss;
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