Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Design and implementation of 1000 V 20 kW power module for electric vehicle fast charger

  • Gi‑Young Lee (Department of Electrical Engineering, Gyeongsang National University) ;
  • Jun‑Sung Park (Electric Drive Research Center, Korea Automotive Technology Institute) ;
  • Su‑Yeon Cho (Electric Drive Research Center, Korea Automotive Technology Institute) ;
  • Wae‑Gyeong Shin (Electric Drive Research Center, Korea Automotive Technology Institute) ;
  • Jun‑Ho Kim (Department of Electrical Energy Engineering, Keimyung University)
  • Received : 2023.07.20
  • Accepted : 2023.08.10
  • Published : 2023.10.20
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Abstract

This paper presents the design and the implementation of a 20 kW power module (PM) for electric vehicle fast chargers. The proposed PM includes an AC/DC converter using a T-type neutral-point-clamped (TNPC) topology and an isolated DC/DC converter that uses an LLC resonance topology to minimize the switching losses. A cooperative control strategy is proposed to achieve a parallel operation sequence of PMs while considering the actual EV charging sequence. Experimental results validate the effectiveness and the reliability of the proposed PM for various load conditions, and the feasibility of the cooperative control strategy is confirmed through the parallel operation with four PMs. Experimental results show a high-efficiency power conversion of up to 97%.

Keywords

Acknowledgement

This work was supported in part by the research grant of the Gyeongsang National University in 2022, and in part by the Korea Evaluation Institute of Industrial Technology (KEIT, Korea) grant funded by the Ministry of Trade, Industry and Energy (MOTIE, Korea) (No. 20019073, High density power module & High power density power conversion technology development of Vehicle)

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