基載備援如燃料電池能使微電網系統之再生能源達到較高的供電穩定度。然而燃料電池之響應較慢，當負載有所變動時無法在短時間內追隨負載之變動量，因此需要加入快速儲能系統。超級電容響應快也具備充放電之功能，相當適合擔任快速儲能系統。超級電容的特性為低電壓大電流、響應快、可雙向充放電。為了克服超級電容電壓與直流鏈電壓之大壓差、轉換器需具備高升降壓比之特性。雙主動橋式轉換器具備高升降壓、電氣隔離、雙向功率流動等特性，適合超級電容為主的快速儲能系統。本研究實作一套額定500W之超級電容快速儲能系統搭配燃料電池，經由模擬及實測驗證超級電容系統追隨各種負載變動量的可行性。

Base-load backup source, such as fuel cell, can help the micro-grid system with renewable energy sources, such as wind, improving power supply security. However, fuel cells have slow transient response, which cannot respond instantly to load changes. A dynamic storage system should be a good option to amend for this drawback. Supercapacitors have fast transient response and can store and supply power, making it suitable for serving as a dynamic storage system. The supercapacitors generally operate at low voltage and high current. The voltage difference between the supercapacitor and the DC bus voltage is considerable, so the converter requires high step-up and step-down voltage capabilities. The DC-DC bidirectional dual active bridge converter features bidirectional power flow, high step-up and step-down voltage ratio as well as electric isolation. These characteristics are right for supercapacitor’s application.
This thesis presents the integration of the fuel cell and a 500W supercapacitor storage system. Simulation and field test validate the feasibility of the hybrid system in response to various load change patterns.

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