Direct Torque Control of three phase asynchronous motor supplied by static converters

摘要

This paper presents a Direct Torque Control (DTC) applied to a three-phase asynchronous motor supplied by three-phase rectifier with absorption of the sinusoidal current cascaded with a two levels inverter in order to improve certain electrical sizes as the source current, and other mechanical characteristics as the undulations of the torque and the flux's distortion. The speed control is realised by using a PI controler. The effectiveness of this approach is shows by simulation results using Power System Blocset (PSB) of Matlab / Simulink.