中文摘要：

电动汽车感应电机运行工况复杂多变，电机模型和参数的精度对整车控制性能影响较大。在对电机参数时变性分析研究的基础上，建立了考虑电机参数时变性的感应电动机动态模型，研究了电机参数的估计方法，给出了电机参数与运行条件之间的匹配关系。利用MATLAB／SIMULINK软件构造了电动汽车感应电机的动态仿真模型，以电动轿车电机为例，给出了仿真结果，验证了所建模型的有效性。

英文摘要：

in electric vehicle applications, the induction motor （IM） is operated at various operating conditions and is transient. Accurate knowledge of the IM model and its parameters is critical for the high performance control of an electric vehicle. An IM dynamic model considering variable parameters was proposed based on the analysis of its variable parameters character. The solutions to estimate the parameters were developed. The parameters were mapped to the operating conditions using polynomial functions. The model based on Matlab/Simulink was designed. Simulation results demonstrate the validity of the model.