輸入電源無預警斷電時，重要資料儲存系統為了完成即時資料的備份，因此系統電能保持時間電源轉換器必須滿足及時資料備份所需電能，並且滿足高功率密度的要求。利用提高輸出電容跨壓的方法，電源轉換器所需的輸出電容可大幅減少，達到高功率密度和提供即時資料備份的電能的要求。本論文提出的新式非隔型升壓電源轉換器，藉由堆疊非隔離電流饋入型推挽式轉換器的技術以及新式倍壓整流器等技術達成高升壓輸出的需求。此外，可以使用低電壓應力的MOSFET,並且漏感能量得以回收，故達成高的轉換效率。除了電路工作原理之介紹，並以輸入範圍36-75V和380V/500W輸出電路規格，共同以開關頻率150 kHz，進行實驗，量測電壓及電流波形。

By stacking a non-isolated current-fed push-pull converter with a novel voltage doubler rectifier technique, a non-isolated step-up converter is proposed in this thesis. In addition to inheriting the advantages of the current-fed push-pull converter, the proposed converter has several features, for instance, low voltage stress on the semiconductor and the recovery of the leakage energy. Consequently, low voltage rating MOSFET can be used resulting in achieving high conversion efficiency. Moreover, high power density is also achieved because the capacitance as well as the number of the output filter capacitor is significantly reduced.
To demonstrate the feasibility of the proposed converter, the operation principles as well as the experimental results with 150 kHz, 36-75V input and 380V/500W output are described in this thesis.

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