本論文提出一雙變壓器主動箝位順向/返馳式轉換器，其架構以主動箝位順向/返馳式轉換器為基礎，利用共生之方式將兩組轉換器組合，但只需兩個切換開關，因此能減少轉換器成本，並且兩個切換開關皆操作於零電壓切換模式，可提高轉換器效率。此架構之優點為變壓器可均分輸出功率，以分散變壓器之體積，故易於實現電源供應器高功率密度之要求。本論文將會對此電路之動作原理及設計流程做詳細分析與討論。

This thesis presents a two-transformer active-clamping forward-flyback converter. The proposed topology is mainly composed of two active-clamping counterparts, but only two switches are required, the cost of the converter are thus reduced. In addition, two switches work on zero-voltage-switching(ZVS) operation such that the converter efficiency is improved. The merits of the proposed topology is that it can separate the volume of the transformer by utilizing two transformers. It is easy to achieve high power density. The operating principles and design considerations of the proposed converter are analyzed and discussed in details.

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