| Summary: | 碩士 === 清雲科技大學 === 電機工程研究所 === 97 === The paper mainly discusses 1.2kW Proton Exchange Membrane Fuel Cell (PEMFC) system used to operate the energy conversion. The process is to switch the fuel cell to AC load by the push-pull converter and raising the voltage on the DC-to-DC system. The converter is characterized by low input of voltage, high utilization of the transformer, switching through the push-pull converter, outputting the low current and adapting to the high power environment. The efficiency generated from this experiment is 72% and the circuit system is stable enough to develop the fuel cell.
In the PEMFC system, the oscillogram of the current is stable while the current is 1A; however, when the current is changed into 2.1A (subject to the power is 230W), the current output fluctuates and twists. After comparing the result generated from the simulation test of PSIM and experiment with the real data, this theory of the dissertation is proved to be workable.
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