电动汽车启动控制仿真

为了提高电动汽车启动性能，基于永磁同步电动机驱动系统的数学模型，采用广义预测PI控制策略对电动车启动过程进行了控制;依据永磁同步电动机转子的凸极效应，采用高频电流注入法追踪转子的初始位置，对含有位置信息的高频电压信号进行检测，并通过外差法得到转子位置信号，通过对启动过程仿真，结果表明，所采用的方法是正确可行的，对电动汽车的启动过程控制具有一定的实用价值。

Simulation of start process control of electrical vehicles

In order to improve the start performance of electrical vehicle, generalized predictive PI control method is adopted to control the start process based on the mathematic model of permanent magnet synchronous motor drive system. High-frequency (HF) current signal injection method is presented and the rotor position-tracking observer based on the spatial saliency is established. The HF current signal is injected to motor form high frequency voltage vector signals. Then the position is picked up by heterodyning .The simulation results for the rotor position self-sensing during start process verifies the correctness and feasibility of this approach and also indicate the control method has profound application potential.