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软开关弧焊逆变电源在全桥拓朴的电源中应用零电压切换控制技术，可降低开关损耗，并改善器件的运行环境．本文主要对FB－ZVS－PWM变换器一个运行周期内每一时间间隔内工作状态的详细分析，并提出谐振回路的参数设计原则．
Soft-switching arc welding inverter power supply in the full-bridge topology of the application of zero-voltage switching control technology, can reduce switching losses and improve the device operating environment. This paper mainly analyzes the working state of FB-ZVS-PWM converter in each time interval in a running cycle and puts forward the design principle of resonant circuit.