Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Deadbeat predictive direct power control of interleaved buck converter-based fast battery chargers for electric vehicles

  • Choi, Hye-Won (Department of Electrical and Computer Engineering, Ajou University) ;
  • Kim, Seok-Min (Department of Electrical and Computer Engineering, Ajou University) ;
  • Kim, Jinwoo (Department of Electrical and Electronics Engineering, Konkuk University) ;
  • Cho, Younghoon (Department of Electrical and Electronics Engineering, Konkuk University) ;
  • Lee, Kyo-Beum (Department of Electrical and Computer Engineering, Ajou University)
  • Received : 2020.03.02
  • Accepted : 2020.05.27
  • Published : 2020.09.20
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Abstract

This paper presents a deadbeat predictive direct power control (DB-DPC) scheme for a fast battery charger to improve its dynamic performance and stability. Recently, battery chargers have been adopting paralleled multi-leg converters based on silicon carbide (SiC) devices to increase power capacity, which reduces the charging duration. However, the inherent instability of the battery is regarded as a crucial issue during the fast charging process. Therefore, the proposed DB-DPC provides a stable steady state since it includes real-time estimation of the variable battery impedance. Furthermore, the DB-DPC effectively minimizes the rising and settling time, which demonstrates fast-dynamic response characteristics when compared to proportional-integral (PI) control. The control performance is verified by various simulation and experimental results.

Keywords

Acknowledgement

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Technology Innovation Program funded by the Ministry of Trade, Industry & Energy(MOTIE, Korea) (No. 20194030202370, 20010854).

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