A NOVEL VECTOR CONTROL HYSTERESIS CURRENT CONTROLLER FOR INDUCTION-MOTOR DRIVES

In this paper, a novel vector control hysteresis current controller fo r induction motor drives is proposed. Coordination of three phase swit ches is made in the d-q phase plane. In addition to the current error, information of the current error derivative is further employed so th at one can take full advantages of adding the zero voltage vector for reducing the switching frequency. A simple hardware implementation is also proposed such that merits of the conventional hysteresis current controller can still be kept. Theoretical basis and some simulation an d experimental results are also covered in this context.