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.