Abstract
The Auxiliary Resonant Commutated Pole Inverter which is a kind three phase soft inverter. It is very suitable for AC driving. During the developing process, the spike voltage was produced between the auxiliary switch. Research shows that the diode in the auxiliary resonant circuit has a reverse-recovery phenomenon. Aim at this phenomenon, the methods of using clamping diode, double RCD snubber and saturable inductance are adopted. Experiments approve that all the methods can suppress the spike voltage between the auxiliary switch effectively. The method using saturable inductance has the advantage of simple circuit , low power-loss and low effect on ARCPI.
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