本文為研製一應用於500 W行動充電站換流器。此換流器模組主要分為兩級電路，分別為直流-直流轉換器以及直流-交流轉換器。第一級的直流-直流轉換器採用錯相諧振式主動箝位順向/返馳式電路，將輸入20 V到24 V的電池之直流電壓轉為240 V直流電，足以提供第二級交流電壓振幅輸出之要求，而此架構一次側運用主動箝位，可以使功率開關元件具有零電壓切換的優點，進而降低功率開關之切換損失、提升電路轉換效率。此外，電路架構錯相的方式能夠降低輸出電流漣波，並且提升功率等級。第二級直流-交流轉換器採用全橋式架構，利用切換技術將240 V之直流電轉為110 V/60 Hz之交流輸出。最後本論文討論與分析電路架構之動作原理，並實際研製一臺電路，整機效率最高可達94.1%。

This thesis focuses on the study and implementation of a 500 W inverter for portable power station. The inverter consists of two stages which are a DC-DC converter and a DC-AC inverter. The first-stage is an inter-leaved active-clamp forward/flyback converter which transforms 20 V to 24 V direct current into 240 V direct current, and the primary-side switch can achieve zero-voltage-switching to reduce the switching loss and raise the conversion efficiency. Moreover, the interleaved circuit can reduce output current ripple. The second-stage is a full bridge inverter which transforms 240 V direct current into 110 V/60 Hz alternating current with switching technique. Finally, a prototype of the proposed inverter has been built according to the design procedures. The peak efficiency can be up to 94.1%.

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