연료전지 하이브리드 자동차의 부하추종 방식 운전전략에 관한 연구 = Load follow type operating strategy for fuel cell hybrid vehicle

다국어 초록 (Multilingual Abstract)

Fuel cell hybrid vehicle with auxiliary energy storage devices has several advantages such as fuel cell stack down sizing, down cost, use regenerative braking, and flexible operating strategy. Fuel cell hybrid vehicle is divided into non plug-in type and plug-in type. Driving range of plug-in type fuel cell hybrid vehicle is limited by hydrogen consumption and battery state of charge(SOC). Therefore, plug-in type hybrid fuel cell vehicle needs the operating strategies to effective use of hydrogen and battery SOC. In this research, load follow type operating strategies of fuel cell and lead-acid battery plug-in type hybrid vehicle were proposed in terms of power distributed ratio of fuel cell and battery, change control current, battery SOC, battery discharge limit, and stable operation of fuel cell. A vehicle loaded fuel cell and lead-acid battery hybrid system was operated in field and simulated by MATLAB/Simulink™. Established load follow type operating strategies are as follows : ⅰ) fuel cell is operated by load following mode ⅱ) On/Off time of Battery discharge for power distributed ratio change of fuel cell and battery is changed by control current ⅲ) Fuel cell and battery share load after battery discharge start ⅳ) Driving range is changed by hydrogen consumption and battery SOC according to power distributed ratio change. Selection of control current is maximum value as much as possible at ideal state if fuel cell stack operation is stable.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 연료전지 하이브리드 자동차의 구성
• 3. 부하추종방식 운전전략
• 4. Matlab/Simulink™ 모델
• 5. 부하추종 운전전략에 따른 특성
• 6. 결론
• 후기
• References