Power Management System of Fuel Cell Hybrid Vehicle

• Main Authors: Yu-jie Chen, 陳郁潔
• Other Authors: Jenn-Jiang Hwang
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/69219332268185585681

碩士 === 國立臺南大學 === 綠色能源科技研究所碩士班 === 99 === This study designs a hybrid vehicle with PEMFC and Li-ion battery, and discusses its dynamic behavior and overall performance. Fuel cell voltage though DC/DC converter with Li-ion battery provides power to motor, and force comes from permanent magnet synchronous motor (PMSM), motor provides the power through the gearbox, drive shaft and differential to the vehicle wheels. This study describes PEMFC, Li-ion battery, PMSM and vehicle structure of numerical model by using MATLAB/Simulink, and designs power management modes depending on different using of power output mode, such as high power requirement, low power requirement, normal power require and charge mode. According to accelerator, discussion about the hybrid output, hydrogen consumption and battery remaining power. This study tests performance of power management modes by using ECE40 driving cycle. The result presents that it can meet the control strategy. Then set some difference hybrid ratio tests to know how do hybrid ratio effect the overall efficiency. The result is that the hybrid ratio would not affect efficiency significantly. But the higher Fuel Cell maximum output the higher hydrogen supply.