本文旨在設計及製作以數位信號處理器為基礎之燃料電池功率轉換器，將燃料電池之功率輸出至負載端，並提高整體能源使用效率。文中提出全橋式直流-直流功率轉換器，將電壓變動範圍為26V~42V之燃料電池提昇至200V之直流鏈電壓，並採用高頻及零電壓切換，有效地將燃料電池的功率傳至負載；另外，本文亦設計昇/降壓型直流截波器以調節燃料電池與蓄電池的能量，使直流鏈電壓保持穩定；最後，則使用直流-交流功率轉換器將直流電源轉換成110V，60Hz之單相交流電源。
本文之系統採用數位信號處理器(DSP, TMS320LF2407A)為控制核心，配合電壓、電流回授以完成閉迴路控制，其中全橋式直流-直流功率轉換器之功率控制策略、直流截波器之充放電控制及直流-交流功率轉換器之電壓控制皆由軟體程式完成，用以減少硬體電路。本文已完成500W的發電系統，並由實驗結果驗證理論分析之可行性。

This thesis presents the design and implementation of digital signal processor based power converters for fuel-cells. The power converters can not only transfer the power from fuel-cells to the load, but also improve the energy efficiency. In the proposed system, a full-bridge dc-dc power converter is designed to boost dc bus to 200V. Moreover, the high-frequency zero-voltage switching technigue is adopted for the power transmission. In addition, a buck/boost chopper is introduced to charge or discharge batteries in order to regulate the power between fuel-cells and batteries. Finally, a single-phase inverter is added to convert dc bus into a 110V, 60Hz single-phase ac source.
For implementation, the digital signal processor, DSP TMS320LF2407A, is used to control the system with the voltage and current feedbacks. The control of the full-bridge power converter, the dc chopper and the inverter are all conducted by software to reduce the component counts. A prototype of 500W fuel-cell generation system is developed. The feasibility of the generation system is verified experimentally.

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