Paper Title
Direct Torque Control Method Of Three Phase Induction Motor For Controlling Torque And Flux

In this paper, a direct torque control (DTC) method of an induction machine is proposed which enables the minimum torque ripple control . Switching frequency of conventional DTC is not constant . Two major problems that are usually associated with DTC drives are: 1) switching frequency that varies with operating conditions and 2) high torque ripple. To solve these problems, and at the same time retain the simple control structure of DTC, a constant switching frequency torque controller is proposed to replace the conventional hysteresis-based controller Keywords- Direct torque control, induction motor drives, inverter.