A novel topology of zero-current transition (ZCT)‎ voltagc-source PWM three-phase inverter

Abstract EN

Soft-switching technique can substantially improve the performance of power converters, mainly due to the increase of switching frequency, that result in better modulation quality.

This is more concerned particularly in the high power applications, where devices [gate turn off (GTO) or something else similar] can not operate over a few hundreds of hertz in conventional hard switching convener structures.

High frequency resonant converter can perform the zero-current or zero-voltage switching (so, called soft switching) operation, which produces lower switching loss and lower EMI noise than the hard switching operation performed by conventional PWM converters.

In this paper, design and analysis of moderate power ZCT three-phase PWM inverter has been presented.

Also, the designed inverter and its novel control circuit is implemented experimentally to investigate its characteristics with this new zero-current transition ZCT technique.