【摘要】 介绍了所研制的具有自调整换向功能的大功率变极性等离子弧焊接电源。通过电源自动选择不同的换向控制策略熏并辅以配套换向吸收电路,以达到大功率变极性等离子弧焊电源输出电流宽范围变化时,既具有高可靠性又保证输出变极性时电弧稳定性的要求。更多还原

【Abstract】 A novel variable polarity plasma arc welding (VPPAW) power supply is introduced in this paper.By adopting the self-adjusting commutation control strategy and corresponding snubber circuit,the developed high-power VPPAW power supply has high reliability and the welding arc is stable even in varing polarity state.更多还原