Direct Torque Control of Symmetrical and Asymmetrical Single Phase Induction Motor

Direct torque and flux control of ac machines is well established technique getting increasingly adapted in industry. This technique like other high performance control methods such as vector control is rarely applied to single phase machines. However, development of high performance low power drives is receiving some attention. This paper investigates the performance of single phase direct torque controlled induction motor drive. Unified modeling approach is used to adapt direct torque control (DTC) of both symmetrical as well as asymmetrical single phase induction motor. It is also demonstrated that it is possible to take winding and angle asymmetry into accounts. The drive is simulated using Simulink platform and the results are presented.