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

The Korean Institute of Power Electronics (전력전자학회)
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DC Bus Voltage Regulation With Six-Step Operation in Maritime DC Power System

식스 스텝 운전을 이용한 선박용 DC 전력 시스템의 직류단 전압 제어

  • Yun, Jonghun (Dept. of Electrical and Computer Engineering, Seoul National University) ;
  • Son, Young-Kwang (Korea Electrotechnology Research Institute) ;
  • Sul, Seung-Ki (Dept. of Electrical and Computer Engineering, Seoul National University)
  • Received : 2021.02.26
  • Accepted : 2021.04.05
  • Published : 2021.08.20
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Abstract

Active AC/DC converters with PWM operation are utilized to regulate rectified DC bus voltage of a permanent magnet synchronous generator in the maritime DC power system. A DC bus voltage regulation strategy that exploits the six-step operation is proposed in this study. Compared with that of the PWM operation, switching loss of the converter can be significantly reduced under the six-step operation. Moreover, conduction loss can also be reduced due to the high modulation index and reduced flux-weakening current of the six-step operation. A controller is used for the proposed DC bus voltage regulation strategy to verify its validity with the simulation and experimental setup. The simulation and the experimental test results showed that the converter loss reduces to a maximum of 70% and 19%, respectively.

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Acknowledgement

본 논문은 2021년도 BK21 FOUR 정보기술 미래 인재 교육 연구단에 의하여 지원되었음.

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