Abstract
Hydrogen energy is a kind of important clean energy. PEMFC(Proton exchange membrane hydrogen fuel cell) is a kind of effective hydrogen energy utilization device. It has many advantages, such as simpler structure, lower energy consumption, high reliability, quick start and easy for controlling. For the air-cooled type hydrogen fuel cell, temperature and humidity inside the PEMFC are the main factors. According to the 150W small power air-cooling type hydrogen fuel cell, the paper presented an improved purging control algorithm based on the fuzzy control. Through the dynamic adaptive control of exhaust gas purge, the PEMFC can work efficiently in the appropriate humidity conditions. The experiment results show that compared with the traditional timing purging, the proposed algorithm can effectively improve the work efficiency of the PEMFC, and reduce the hydrogen consumption
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