PWM Selection Method for High Performance of Two-Level Three-Phase Voltage Source Inverters in High Load Power Factor Ranges

In this paper, a pulse-width modulation (PWM) selection method for two-level three-phase voltage source inverters (VSIs) is presented to reduce the common-mode voltage (CMV) or the DC-link capacitor current (DCC) in high load power factor ranges. In general, the high CMV generates the large common-mode current, which causes electromagnetic emissions and motor damage. Also, the large DCC aggravates the lifespan and increases the size of the...