目前燃料電池在全球已成為一潔淨能源的新名詞，其與太陽能發電、風力發電一樣，都為綠色能源的一種。其中，燃料電池被視為最具有發展潛力的潔淨能源技術，主要優點包括低噪音、低污染、高效率、燃料更換容易。而燃料電池是低壓輸出且輸出電壓具有較大的變化特性，因此必須在燃料電池與負載之間加入升壓型直流-直流轉換器，提供穩定的電壓源給負載。
本論文採用的架構為電流饋入之升壓型全橋轉換器，在二次側使用倍壓電路。數位控制器則以協調控制多相電能模組間的交錯式並聯操作。並設計輔助電源提供數位訊號處理器(5V/3A)、驅動電路(15V/2A)及回授電路(15V/0.67A)。針對燃料電池發電系統優化之高效能隔離多相式電能轉換器加以研究和實現，最後本文實現一台10kW之升壓型直流-直流轉換器。實驗結果驗證了系統的可行性，轉換效率可達到90%以上。

Recently, clean energy resources such as solar cell, wind turbine or fuel cell have been exploited for developing renewable electric power generation systems. The fuel cell is considered as the most clean energy technology. Its major advantages include low noise, low pollution, high efficiency, and easy replacement. However, the fuel cell stacks present low voltage output and wide range of voltage variation. In order to provide load a constant source, a step-up DC-DC converter must be inserted between the fuel cell stack and the load.
In this thesis, the adopted circuit topology is the current-fed full-bridge boost converter with secondary voltage-doubler. A digital controller is also designed to coordinate the interleaved parallel operation among the multi-phase power modules. An auxiliary power is used to provide digital signal processor (5V/3A), drive circuit (15V/2A) and the feedback circuit (15V/0.67A). An improved high-performance isolated multi-phase power converter is studied and implemented for fuel cell power systems. Finally, a 10kW DC-DC boost converter is implemented, Experimental results are shown to verify the feasibility of the developed system. A high conversion efficiency over 90% can be achieved.

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