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

  • 제30권5호
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  • Pages.401-410
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  • 2019
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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PEM 연료전지 시스템 모델링-자동차용 연료전지 시스템의 주요 작동 변수 변경에 따른 시스템 효율 민감도 분석

Modeling of PEM Fuel Cell System-Sensitivity Analysis of System Efficiency with Different Main Operating Parameters of Automotive Fuel Cell System

  • 김한상 (서울과학기술대학교 기계.자동차공학과) ;
  • 강병길 (서울과학기술대학교 기계.자동차공학과) ;
  • 원권상 (서울과학기술대학교 기계.자동차공학과)
  • KIM, HAN-SANG (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • KANG, BYUNGGIL (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology) ;
  • WON, KWONSANG (Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology)
  • 투고 : 2019.08.18
  • 심사 : 2019.10.31
  • 발행 : 2019.10.31
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초록

The operating conditions greatly impact the efficiency and performance of polymer electrolyte membrane (PEM) fuel cell systems and must be properly managed to ensure better performance and efficiency. In particular, small variations in operating conditions interact with each other and affect the performance and efficiency of PEM fuel cell systems. Thus, a systematic study is needed to understand how small changes in operating conditions affect the system performance and efficiency. In this paper, an automotive fuel cell system (including cell stack and balance of plant [BOP]) with a turbo-blower was modeled using MATLAB/Simulink platform and the sensitivity analyses of main operating parameters were performed using the developed system model. Effects of small variations in four main parameters (stack temperature, cathode air stoichiometry, cathode pressure, and cathode relative humidity) on the system efficiency were investigated. The results show that cathode pressure has the greatest potential impact on the sensitivity of fuel cell system efficiency. It is expected that this study can be used as a basic guidance to understand the importance of achieving accurate control of the fuel cell operating conditions for the robust operation of automotive PEM fuel cell systems.

키워드

참고문헌

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