totem-pole pfc rectifier current spike investigation and mitigation using predictive control

With the advent of wide bandgap (wbg) semiconductors, use of the totem-pole power factor correction rectifier (tp-pfcr) is increased in power electronic applications. however, this converter is suffering from an inherent current spike in the vicinity of grid voltage zero crossing. in this paper firstly, the effect of control unit in zero crossing phenomena is investigated and the cause of the current spike is extracted. to solve this problem, a new predictive control method is proposed and applied to the converter. simulation results confirm the effectiveness of the proposed controller to mitigate current spikes of voltage zero crossing.