An Asynchronous Motor Vector Control System Considering the Variation of Rotor Resistance

Asynchronous motor indirect vector control system has been widely used in industry, the system is simpler than the other vector control systems, but it´s influenced by the motor´s parameters, especially the rotor resistance, there is an error between the estimation of the rotor flux´s position and the actual position. This paper analyses the influence of rotor resistance to the system and presents a method of rotor resistance identification. Simulation results confirm the vector control system can reduce the influence of rotor resistance, and the method is much more practical.