电动汽车中永磁同步电机转速的控制

为了更好地实现对以永磁同步电机为驱动电机的电动汽车车速的控制,设计了一套基于滑模控制的永磁同步电机控制系统,并且在此基础上加入最大转矩电流比控制,对滑模控制和最大电流转矩比控制的数学模型进行了分析.仿真分析表明,加入最大转矩电流比的滑模控制系统不会受到外界变化影响,永磁同步电机能够稳定运行.同时系统响应更快,抗干扰能力大大提高,鲁棒性更强.

Speed Control of Permanent Magnet Synchronous Motor for Electric Vehicles

In order to realize the speed control of electric vehicle with permanent magnet synchronous motor(PMSM) as driving motor,a set of PMSM control system based on sliding mode control was designed,and the maximum torque current ratio control was added on this basis.Also,the mathematical model of sliding mode control and maximum current torque ratio control was analyzed.The simulation analysis shows that the sliding mode control system with the maximum torque current ratio is not affected by external changes,and the PMSM can run stably.At the same time,the system response is faster,the robustness is better and the anti-interference ability is greatly improved.