以振动送丝方式向熔滴施加附加机械力(能量)来实现恒定直流mag焊稳定射滴过渡是解决钢焊丝mag焊接工艺现存问题的有效途径。
It is an effective method to solve the existent problems in MAG welding of steel by injecting mechanical force to the metal droplet.
因此它可以把“两倍于电源频率的直流电”进行“平滑化处理”，成为一个接近恒定的直流电。
Therefore it can be seen that it will "smooth" the "twice mains frequency DC" into a near constant DC voltage.
电流环软启动通过输出电流指令递增实现，电压环软启动则比较了直流侧电压指令逐步升高法、恒定电流充电法、变PI参数调节法三种策略。
Three soft start-up technique for voltage loop are compared with each other, which are the reference of DC bus voltage gradually increasing, constant charging current and different PI modulation.
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