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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Power Distribution Optimization of Multi-stack Fuel Cell Systems for Improving the Efficiency of Residential Fuel Cell

주택용 연료전지 효율 향상을 위한 다중 스택 연료전지 시스템의 전력 분배 최적화

  • TAESEONG KANG (Fuel Cell Laboratory, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • SEONGHYEON HAM (Fuel Cell Laboratory, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • HWANYEONG OH (Fuel Cell Laboratory, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • YOON-YOUNG CHOI (Fuel Cell Laboratory, Hydrogen Energy Institute, Korea Institute of Energy Research) ;
  • MINJIN KIM (Fuel Cell Laboratory, Hydrogen Energy Institute, Korea Institute of Energy Research)
  • 강태성 (한국에너지기술연구원 수소에너지연구소 연료전지연구실) ;
  • 함성현 (한국에너지기술연구원 수소에너지연구소 연료전지연구실) ;
  • 오환영 (한국에너지기술연구원 수소에너지연구소 연료전지연구실) ;
  • 최윤영 (한국에너지기술연구원 수소에너지연구소 연료전지연구실) ;
  • 김민진 (한국에너지기술연구원 수소에너지연구소 연료전지연구실)
  • Received : 2023.03.20
  • Accepted : 2023.08.07
  • Published : 2023.08.30
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Abstract

The fuel cell market is expected to grow rapidly. Therefore, it is necessary to scale up fuel cells for buildings, power generation, and ships. A multi-stack system can be an effective way to expand the capacity of a fuel cell. Multi-stack fuel cell systems are better than single-stack systems in terms of efficiency, reliability, durability and maintenance. In this research, we developed a residential fuel cell stack and system model that generates electricity using the fuel cell-photovoltaic hybrid system. The efficiency and hydrogen consumption of the fuel cell system were calculated according to the three proposed power distribution methods (equivalent, Daisy-chain, and optimal method). As a result, the optimal power distribution method increases the efficiency of the fuel cell system and reduces hydrogen consumption. The more frequently the multi-stack fuel cell system is exposed to lower power levels, the greater the effectiveness of the optimal power distribution method.

Keywords

Acknowledgement

본 연구는 2023년도 산업통상자원부의 재원으로 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제이다(No.20203040030090).

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