摘要：本文詳細(xì)闡述了有源鉗位正激變換器的工作原理，分析了各工作模態(tài)的功率損耗，得出了功率損耗與勵(lì)磁電感間的關(guān)系。經(jīng)理論推導(dǎo)證明存在著一個(gè)最優(yōu)的勵(lì)磁電感值，可以使得變換器功率損耗最小，輸出效率最高。 敘詞：有源鉗位 功率損耗 勵(lì)磁電感 最優(yōu)的 Abstract：This paper represents the operations of active-clamp forward converter in detail. By analyzing the power dissipation of each operation state, the relationship between the power dissipation and the magnetizing inductance of the isolation transformer is got. It is verified theoretically that there is a non-infinite but optimal magnetizing inductance for the least dissipation and highest output efficiency of the converter. Keyword：active-clamp power dissipation magnetizing inductance optimal