The switch element generates an alternate current voltage having a quasi-higher frequency from a direct current voltage.
所述开关元件从直流电压中产生具有第一频率的第一交流电压。
This article describes the control principle of soft starter of alternate current electric motor, and the excellence and characteristic than normal starter.
本文阐述了交流电动机软起动控制器的控制原理，与常规的交流电动机起动控制器相比所具有的优点和特点。
The higher the frequency of alternate current, the higher oscillation frequency of the interface between slag pool and metal pool is, and the less amplitude is.
交流电频率越高，渣-金界面的振荡频率越大，振幅随之减小；
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