Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on the Fuel Cell Equivalent Circuit Modeling

연료전지 수치해석을 이용한 등가회로 모델링 연구

  • OH, HWANYEONG (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • CHOI, YOON YOUNG (Fuel Cell Research Center, Korea Institute of Energy Research) ;
  • SOHN, YOUNG-JUN (Fuel Cell Research Center, Korea Institute of Energy Research)
  • 오환영 (한국에너지기술연구원 연료전지연구실) ;
  • 최윤영 (한국에너지기술연구원 연료전지연구실) ;
  • 손영준 (한국에너지기술연구원 연료전지연구실)
  • Received : 2022.04.05
  • Accepted : 2022.06.07
  • Published : 2022.06.30
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Abstract

Power converter are usually equipped for fuel cell power generation system to connect alternating current (AC) electric power grid. When converting direct current (DC) of fuel cell power source into AC, the power converter has a frequency ripple, which affects the fuel cell and the grid. Therefore, an equivalent circuit having dynamic characteristics of fuel cell power, for example, impedance, is useful for designing an inverter circuit. In this study, the current, voltage and impedance characteristics were calculated through fuel cell modeling and validated by comparing them with experiments. The equivalent circuit element values according to the current density were formulated into equations so that it could be applied to the circuit design. It is expected that the process of the equivalent circuit modeling will be applied to the actual inverter circuit design and simulated fuel cell power sources.

Keywords

Acknowledgement

본 연구는 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제이다(No. 20193010032490, No. 20203010030010).

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