High-response flux control of direct-field-oriented induction motor with high efficiency taking core loss into account

Stator core loss has significant adverse effects when an induction motor is controlled by the conventional field-oriented method. Therefore, taking co re loss into account should make it possible to control the torque very pre cisely, In this paper, a direct-held-oriented induction motor with a deadbe at rotor flux controller was developed. The method ensures maximum efficien cy in the steady state without degradation of the dynamic response, Simulat ion and experimental results have demonstrated that this method has higher efficiency and good speed response without any degradation in the transient characteristics.