基于矢量控制的电动汽车用永磁同步电机系统研究

摘要

针对传统PWM调制技术运用到电动汽车时,存在的谐波含量较大,转矩脉动较高等缺点,设计了基于矢量控制的电动汽车用永磁同步电机系统.基于矢量控制的原理,在MATLAB/Simulink环境下搭建了永磁同步电机矢量控制系统模型,采用id=0控制策略,仿真研究了系统动态响应.以TI公司的数字信号处理器(DSP) TMS320F28335作为控制芯片,搭建了永磁同步电机控制系统实验平台,实验研究了电机系统在基速以下运行的状态和效率.仿真和实验结果具有很好的一致性,该研究可为电动汽车用永磁同步电机系统的设计和分析提供参考.%Considering the higher harmonic distortion and higher torque ripple caused by traditional PWM strategy when applied to electric vehicles,a permanent magnet synchronous motor system based on space vector pulse width modulation strategy for electric vehicle application was designed.The principle of space vector pulse-width modulation is described in detail,and the vector control system for PMSM was set up in MATLAB/Simulink.The id=0 control strategy was used,and the system dynamic response was simulated.Digital signal processor (DSP) TMS320F28335 of TI company was used as the main control chip to set up the experimental platform.The system status and efficiency below the base speed was studied in experiments.The simulation results and the experimental results show a good consistency.It provides practical value to PMSM system design and analysis.