本論文主要探討1.2kW質子交換膜燃料電池電能轉換系統之研製,主要將燃料電池轉換供應至交流負載上,在直流對直流的電源上將電壓提升,藉由推挽式轉換器做切換,它具有輸入電壓較低及變壓器之利用率較高的特點,再經由全橋式變流器做切換,它具有輸出電流較小及適合較大功率場合使用的特點,提供交流輸出。由實驗得出效率為72%,且電路系統穩定度良好,以提供未來燃料電池應用的發展。 本論文之研製之質子交換膜燃料電池電能轉換系統,當電流為1A與1.9A時,電流波形圖相當穩定,而當電流改變成2.1A時,此時功率約為230W,其輸出電流波形及產生扭曲變形較不穩定,經由PSIM軟體模擬與實驗比較得出穩定燃料電池發電系統,並且與實際量測結果互相比較,以驗證本文研究系統之可行性。
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.