Three-phase Voltage Reconstruction Method Using DC-link Voltage of Current Source Inverter

Abstract

This paper proposes methods to detect DC-link voltage in order to reconstruct three-phase voltage in current source inverter (CSI). Three-phase voltages in CSI are obtained by using DC-link voltage, three-phase current references, and switching pattern. Simulation and experimental test shows characteristics of the reconstruction voltage waveform by sampling point to the DC-link voltage.