正激功率變換器磁復位技術分析研究

摘要：正激變換器的一個固有缺點是功率開關管截止期間變壓器必須復位，而其本身又無復位能力，所以需要采用專門的復位措施。本文介紹了三種常用的磁復位技術和一種新穎的自動復位技術，并比較了它們的優缺點。 敘詞：正激變換器 有源箝位 自動復位 Abstract：The essential drawback of forward power converter is its flux of transformer has to be rested during the transistor off time. And itself has no capability of reset. So it need a special method for resetting. Three common flux reset technologies and a novel auto-reset method are introduced in this paper. Also its advantages and drawbacks are compared. Keyword：forward converter active-clamp auto-reset