Simulink Research of the Sensorless Vector Control System on the Base of the Novel Speed Calculate Modal

A novel sensorless vector control modal on the base of the direct calculate speed modal is presented after researching the traditional sensorless vector control modal in detail. The speed of motor rotor is calculated by the novel modal. The part of PI control modal is omitted which is to calculate rotor speed in the traditional MRAS control modal. The control course is easier than the traditional MRAS control modal. All the control formulas are presented in denial in this paper. Simulation results based on the novel sensorless vector control model demonstrate that the presented vector control scheme is valid, and the control performance of the system is quite well.