本文主要目的為結合氫氣與電能回路控制，以期望達成高效率、高可靠度、低燃料損耗的小型燃料電池供電系統。燃料電池須提供燃料才能產生電能，且輸出電壓會隨著負載變動及燃料電池極化損失的影響而改變，為不穩定的直流電源。運用電力轉換技術可使燃料電池提供穩定的直流輸出電壓。本文設計以降壓式電路架構作為燃料電池供電系統之電力轉換級，使用電壓控制模式獲得穩定直流輸出電壓；質子交換膜燃料電池的燃料為氫氣，當負載變動時，氫氣的使用量也會隨著變動，因此，有效地節省燃料氣體的耗用，成為本文主要的研究重點之ㄧ。
因此，結合電能與氫氣回路控制，經由數位訊號處理器運算處理，使小型燃料電池供電系統能達成效率高、可靠度高、低燃耗。

This paper aims to combine hydrogen and electricity-loop control, to expect a high-efficiency, high reliability and low fuel loss of small fuel cell power supply system. Fuel cells to provide fuel to generate electricity, and the output voltage will change with the load and fuel cell polarization losses and the impact of change for the instability of the DC power supply. Use of power conversion technology will enable fuel cells to provide a stable DC output voltage. This paper designed to buck circuit structure as a fuel battery-powered electric power conversion system level, the use of voltage control mode stable DC output voltage; proton exchange membrane fuel cells for hydrogen fuel, when the load changes, the use of hydrogen will be With the changes, so effective in saving fuel gas consumption, a major research focus of this paper.
Therefore, the combination of electric and hydrogen-loop control, through digital signal processor processing so that the small fuel cell power supply system can reach a high efficiency, high reliability and low fuel consumption.

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