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Backward Energy Flow Management Scheme을 이용한 주택용 연료전지 열병합 발전시스템 통합 시뮬레이션 연구
공낙원(Nak-won Kong),엄석기(Sukkee Um),유상필(Sangphil Yu),김민진(Minjin Kim),이진호(Jinho Lee),이원용(Won-Yong Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Operational strategy for a CHP system has a strong effect on the performance of polymer electrolyte fuel cells (PEFCs)/battery hybrid system. The performance of the integrated CHP system also depends on the efficiencies of fuel cells and peripheral components. In this study, the PEFC/battery hybrid system are laid out for the electrical load, while the thermal storage tank and additional boiler are assumed for the thermal load. Steam methanol reforming systems are configured to simulate hydrogen extraction process, followed by water gas shift reactor and PROX to improve the quality of hydrogen. Considering the systematic efficiencies of every flow processes and seasonal variations of CHP loads, backward energy flow management schemes are developed using MATLAB for the integrated CHP systems.
시뮬레이션 기반 연료전지/2차전지하이브리드 미니버스의 설계 및 성능 평가
김민진,공낙원,이원용,김창수 한국수소및신에너지학회 2007 한국수소 및 신에너지학회논문집 Vol.18 No.1
In terms of the vehicle efficiency, a fuel cell hybrid system has advantages compared to a conventional internal combustion engine and a fuel cell alone-powered system. The efficiency of the fuel cell hybrid vehicle mainly depends on the maximum power of the fuel cell and therefore it is important to decide the design value of the fuel cell maximum power. In this paper, to estimate the performance of the fuel cell hybrid mini-bus in the design phase the simulator based on the models for the fuel cell stack, the electric battery, the fuel cell balance of plant, the controller, and the vehicle itself is proposed. Additionally, the hybrid mini-bus efficiencies with several different fuel cell powers are simulated for a city driving schedule and are compared on another. Consequently, the proposed simulation scheme is useful to determine the best design value of the fuel cell hybrid vehicles.