全桥逆变弧焊电源中高频变压器偏磁的抑制方法

New method solving magnetic bias of high frequency transformer in full bridge reversible arc welding power source

分析全桥逆变弧焊电源中高频变压器直流偏磁产生的原因，提出一种抑制直流偏磁的有效方法———电流型ＰＷＭ控制法，并介绍ＵＣ２８４６芯片在全桥逆变弧焊电源中的应用．

This paper analyses the reason causing magnetic bias in High frequency transformer in full bridge reversible arc welding power source,presentes a effective method current control PWM mode to curb magnetic bias,and introduces the application of IC UC2846 in the full bridge reversible arc welding power source.