The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Development of a 4kW, High Efficiency, Series-Resonant DAB Converter

4kW급 고효율 직렬 공진형 DAB 컨버터 개발

  • Sangmin, Lee (Dept. of Electrical & Computer Engineering, University of Seoul) ;
  • Gil-Dong, Kim (Korea Railroad Research Institute (KRRI)) ;
  • Seung-Hwan, Lee (Dept. of Electrical & Computer Engineering, University of Seoul)
  • Received : 2022.08.05
  • Accepted : 2022.08.29
  • Published : 2022.12.20
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Abstract

This study proposes a design methodology for bidirectional, series-resonant, dual-active bridge (SRDAB) converters. The circuit parameters of the SRDAB converters are designed by considering the output power and efficiency of the converter. The proposed method can be used to design a high-power, high-efficiency SRDAB converter. A voltage controller is employed to manipulate the output voltage of the converter, and the controller gains are selected using the transfer function and frequency response of the controller. Simulation results show that the output power of the designed SRDAB converter is 2 kW per converter module as designed. In addition, the performance of the voltage controller is evaluated using the simulation and experimental results. The output voltage follows the reference voltage within 10 ms under the step change of the reference command. The output voltage also follows the reference voltage under the step load change. The efficiency of the designed SRDAB converter is 95.6%.

Keywords

Acknowledgement

본 연구는 한국철도기술연구원 주요사업(PK2203F1)의 연구비 지원으로 수행되었습니다.

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