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A Study on the Three-Level Converter using Primary Auxiliary Circuit  

Bae, Jin-Yong (특허청)
Kim, Yong (동국대학교 전기공학과)
Cho, Kyu-Man (한국폴리텍I 서울 정수대학 자동화 시스템과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.6, 2008 , pp. 972-981 More about this Journal
Abstract
A New ZVS(Zero Voltage Switching) and ZVZCS(Zero Voltage and Zero Current Switching) Three-Level Converter is proposed. The proposed converter presented in this paper used a phase shift control with a flying capacitor in the primary side to achieve ZVS for the all switch. A primary auxiliary circuit, which consists of one coupled inductor, is added in the primary to provide ZVZCS conditions to primary switches. Many advantages including simple circuit topology high efficiency, and low cost make this converter attractive for high power applications. The principle of operation, feature and design considerations are illustrated and verified through the experiment with a 2kW(27V, 74A) 40 kHz IGBT based experimental circuit.
Keywords
Three-Level Converter; Primary Auxiliary Circuit; ZVS(Zero Voltage Switching); ZVZCS(Zero Voltage and Zero Current Switching);
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  • Reference
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