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In order to verify the shortages of electric traction motor drive system, the decoupling model of asynchronous machine is derived from the mathematical model in the three-phase static coordinate system through the vector coordinate transformation. Building the mathematical model of the asynchronous machine with stator current and rotor flux as state variables, the model of flux estimation, slip frequency calculators and decoupling controller are derived from the state equation of induction motor. According to the traction motor, power drive and control system model, establishing simulation model of the tractor motor driving system based on rotor field oriented with saber. Do the simulation of the 110KW traction motor using of the established simulation model of the electrical system, the characteristics of asynchronous machine are given in the simulation results under different working conditions which provides theoretical reference for real vehicle design.

Simulation Experiment Platform of Electric Traction Motor Drive System Vector Control Based on Saber