一种支持AC 220V和440V运行的三桥臂逆变式高频焊接电源

In this article, a dc/dc topology is proposed for welding power supply that achieves a high conversion efficiency of over 94%, requiring ac 220 and 440 V operation. The secondary-side structure of the proposed topology is the same as that of conventional welding power supplies but the primary side consists of a three-leg inverter structure and a high-frequency transformer with two primary windings...