PWM Control Strategy for Three-Phase Induction Motor Drive using Dual Current Source Inverter

Abstract

This paper proposes a PWM control strategy for a three-phase induction motor (IM) drive using a dual current source inverter (DCSI). This DCSI can drive IM with parallel connected CSIs, which consist of three legs with six switching devices. In DCSI, one of the CSI circuits generates the torque current component by using the reference PWM pattern, and the another outputs the exciting current component produced by employing a phase-shifted PWM pattern. The experiments prove that the proposed DCSI with a dual PWM pattern can drive IM by using only a single DC power supply.