switching arc

A new FB-ZVZCS-PWM soft-switching inverter arc welding power supply was introduced, which adopted the auxiliary transformer and limited bipolar control mode. The principles of realizing zero voltage switching ( ZVS) for leading leg by capacitor and ZCS for lagging leg by auxiliary transformer were explained.

文中介绍了采用原边辅助变压器、有限双极性控制的新型FB-ZVZCS-PWM软开关弧焊逆变电源实现超前臂零电压开关和滞后臂零电流开关的工作原理。

System capacitive current testing can guide arc-extinguish coil correct switching.

通过测试系统电容电流,可以指导消弧线圈的正确投切.

After switching on powerful arc lights, they saw great stalagmites&.

他们打开强力弧光灯，看见一株株巨大的石笋。

After switching on powerful arc lights.

他们打开强力弧光灯。

MCR has the capabilities of smooth voltage and power regulation, switching overvoltage suppression, secondary arc c.

而磁控电抗器能平滑调节无功容量, 抑制操作过电压和限制单相故障时引起的潜供电流.

The decreasing time of free-wheeling current is relative to duty cycle in the exiting FB-ZVZCS-PWM soft-switching inverter arc welding power supply with the block capacitor, and it is hard to achieve zero current switching ( ZCS) for lagging leg with low duty cycle.

现有FB-ZVZCS-PWM软开关弧焊逆变电源采用阻断电容衰减原边环流电流所需的时间与占空比有关，占空比很小（电源输出电压很低）时滞后臂难以实现零电流开关。