Identification of the Equivalent Circuit Optimization Model of Traction Motors
The vector control of the traction motor is based on the model of the traction motor,so the accuracy of the motor model is closely related to the performance of the control system.Firstly,the equivalent circuit of traction mo-tor is established according to the basic theory of electrical machinery,and then,the equivalent circuit of traction motor including stray loss is deduced theoretically.Afterward,the MJV180-06 traction motor is tested and the equivalent circuit model of this traction motor is derived through the test data.Finally,it is found that the rotor resistance and ro-tor reactance in the equivalent circuit of the traction motor are a set of variables by comparing the test results,thus,it is speculated that there is a changing dynamic equivalent model existing in the traction motor.