| Summary: | 碩士 === 國立臺灣大學 === 機械工程學研究所 === 101 === This thesis proposes proton exchange membrane fuel cell (PEMFC) powered electric vehicles. Traditional electric vehicles have advantages of high efficiency, quiet operation, zero emission and diversity of electric sources, but their moving ranges are limited by the battery capacity. Therefore, we build a serial power train that consists of a
PEMFC and two lithium-ion battery sets, and develop suitable power management strategies to continuously operate the system and to increase the system efficiency. This thesis discusses the following four topics: PEMFC control, power
management, microchip system and system modularization, and SimPowerSystem simulation. First, we derive the transfer functions of the PEMFC system, and design robust controllers to regulate the output voltage (current) and to increase the system efficiency. Second, we build a serial power train that is composed of the PEMFC and two lithium-ion battery sets, and design power management strategies to provide
continuously power for electric vehicles. We design voltage control and current control to charge the battery sets, and verify their advantages by experiments. Third, we use microprocessors to realize a standalone control system, and then compare the experiment results with the PC based system. We also develop modular design so that the system can be easily implemented on different vehicles. Last, we build the system on Matlab/Simulink/SimPowerSystem, and compare the simulation results with experiments. We integrate the system onto the electric motorbike and electric light vehicle for road tests. Based on the results, the proposed systems are deemed effective.
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