Simulation Study of the Carrier-Based PWM Method in Three- Phase Flying Capacitor Inverters

Abstract

This paper is a simulation study ofmodulation strategies in three-phase flying capacitorinverters. Under investigation are those strategies thatsolve the capacitor voltage balancing problem: phaseshiftPWM method, the saw-tooth rotation PWM methodand carrier redistribution PWM method. The results areshown through simulation.

Keywords

• rotation PWM method
• carrier redistribution PWM method
• cascade multilevel PWM inverter
• flying capacitor inverter