Abstract:

This paper reports the three-phase three-level voltage source inverter using the auxiliary resonant commutated pole technique in the SVG system. The purpose is to reduce the voltage stress and current stress of the switching elements, increase power density. A relationship is obtained between the soft-switching time and load current, pump current for resonant by analyzing the working process of ARCP diode clamped inverter. So the turn-on moment of the auxiliary switch is decided. The results are evaluated on the basis of the simulation and experiment results.

Key words: ARCPI, soft-switching, 3-level, SVG