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http://dx.doi.org/10.6113/TKPE.2022.27.3.247

Multi-Phase Interleaved ZVT Boost Converter With a Single Soft-Switching Cell  

Lee, Joo-Seung (Dept. of Electrical and Computer Engineering, Sungkyunkwan University)
Hwang, Yun-Seong (Dept. of Electrical and Computer Engineering, Sungkyunkwan University)
Kang, Sung-Hyun (Dept. of Electrical and Computer Engineering, Sungkyunkwan University)
Kwon, Man-Jae (Dept. of Electrical and Computer Engineering, Sungkyunkwan University)
Jang, Eunsu (Dept. of Electrical and Computer Engineering, Sungkyunkwan University)
Lee, Byoung-Kuk (Dept. of Electrical Engineering, Sungkyunkwan University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.27, no.3, 2022 , pp. 247-255 More about this Journal
Abstract
This paper proposes a multiphase interleaved zero-voltage-transition boost converter with a single soft-switching cell for high-voltage DC-DC converter (HDC) of fuel cell systems. The proposed single soft-switching cell structure can reduce the system volume by minimizing the passive and active elements added even in the multiphase-interleaved structure. To analyze the feasibility of the proposed structure, this paper mathematically analyzes the operation modes of the converter with the proposed single soft-switching cell structure and presents guidelines for design and considerations. In addition, the feasibility of the 210[kW] HDC was confirmed through PSIM simulation, and the system volume reduction of up to 10.48% was confirmed as a result of the 5[kW] HDC test-bed experiment considering the fuel cell system. Through this, the validity of the proposed structure was verified.
Keywords
Fuel cell; Interleaved converter; HDC (High Voltage DC-DC Converter); Soft-switching; ZVT (Zero Voltage Transition);
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