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

The Korean Institute of Power Electronics (전력전자학회)
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DC/DC Converter Design for 7kW Fuel Cell

7kW 연료전지용 DC/DC 컨버터 설계

  • Kim, Ga-In (Div. of Electrical Engineering, Kunsan National University) ;
  • Shin, Min-Ho (APEL Co., Ltd.) ;
  • Lee, Jung-Hyo (Dept. of Electrical Engineering, Kunsan National University)
  • Received : 2021.10.20
  • Accepted : 2021.12.29
  • Published : 2022.04.20
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Abstract

This study proposes a design method of fuel cell DC/DC converter using in 5-ton forklift. For efficient hydrogen usage, targeted fuel cell system recirculates discarded hydrogen after fuel cell reaction. Recirculating hydrogen contains much impurities that reduces output power, increasing pressure that can damage the internal fuel cell reaction system. The proposed DC/DC converter effectively converts fuel cell power considering the voltage drop rate to reflect the recirculating hydrogen. Then, frequency control method is used to regulate the current ripple amount for battery and fuel cell hybrid configuration. Proposed power converter system design and control methods are verified in a practical fuel cell system that implements recirculating hydrogen.

Keywords

Acknowledgement

이 논문은 군산시의 지역맞춤형 전기차 클러스터 전문인력양성사업으로 지원된 연구임.

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