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http://dx.doi.org/10.6113/TKPE.2011.16.3.242

Three-Phase ZVS DC-DC Converter with Low Transformer Turn Ratio for High Step-up and High Power Applications  

Kim, Joon-Geun (카코 뉴에너지(주) 선행기술연구소)
Park, Chan-Soo (서울과학기술대 제어계측공학과)
Choi, Se-Wan (서울과학기술대 제어계측공학과)
Park, Ga-Woo ((주)지필로스 기술연구소)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.16, no.3, 2011 , pp. 242-249 More about this Journal
Abstract
The proposed converter has easy device selection for high step-up and high power applications since boost half bridge and voltage doubler cells are connected, respectively, in parallel and series in order to increase output power and voltage. Especially, optimized design of high frequency transformers is possible owing to reduced turn ratio and eliminated dc offset, and distributed power through three cores is beneficial to low profile and thermal distribution. The proposed converter does not necessitate start-up circuit and additional clamp circuit due to the use of whole duty range between 0 and 1 and is suitable for applications with wide input voltage range. Also, high efficiency can be achieved since ZVS turn on of switches are achieved in wide duty cycle range and ZCS turn on and off of diodes are achieved. The proposed converter was validated through 5 kW prototype.
Keywords
Three-phase DC-DC converter; Active-clamping; Soft-switched; Boost-half-bridge; Voltage doubler; High step-up; Fuel cells;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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