A Novel Method of Hysteresis Direct Torque Control of Single-Phase Induction Motor Drives

Abstract

This paper investigates the principle of direct torque control when applied to single-phase induction motor drive. The presented direct torque control is based on hysteresis band strategy. The proposed control scheme utilizes voltage source inverter consisting of a single-phase rectifier cascaded with a four-switch inverter that provides nine voltage vectors and divided the dq plane into eight sectors. A modified switching pattern has been discussed to improve the performance of the drive. Simulation results have been provided to illustrate the system operation. A comparison between the presented scheme and another direct torque control drive scheme has been held.