반응표면기법에 의한 고분자전해질형 연료전지 시스템의 최적화

Optimization of PEM Fuel Cell System Using a RSM

  • 현동길 (전남대학교 기계공학과) ;
  • 김진완 (전남대학교 기계공학과) ;
  • 남양해 (전남대학교 기계공학과) ;
  • 닝천 (중국 사천대학교 전자정보공학과) ;
  • 김영배 (전남대학교 기계공학과)
  • 발행 : 2008.11.05

초록

The output power efficiency of the fuel cell system depends on the demanded current, stack temperature, air excess ratio, hydrogen excess ratio and inlet air humidity. Thus, it is necessary to determine the optimal operation condition for maximum power efficiency. In this paper, we developed a dynamic model of fuel cell system which contains mass flow model, diffusivity gas layer model, membrane hydration and electrochemistry model. In order to determine the maximum output power and minimum use of hydrogen in a certain power condition, response surface methodology (RSM) optimization based on the proposed PEMFC stack model is presented. The results provide an effective method to optimize the operation condition under varied situations.

키워드