电动汽车感应电机驱动系统矢量控制的双CPU实现

为电动汽车感应电动机驱动系统设计开发一套矢量控制系统,其硬件系统是通过双CPU-单片机80C196KC和数字信号处理器(DSP)TMS320F240来实现的.通过坐标变换得到了适用于矢量控制的同步旋转坐标系(m-t轴)下的感应电动机基本数学方程,推出了转子磁链方程和转矩方程.系统软件基于这些数学模型来实现感应电动机转子磁场定向矢量控制,并给出了软件程序流程及MATAB/SIMULAINK下的部分仿真结果和试验结果.仿真与试验结果表明,基于双CPU的感应电机矢量控制系统具有良好的动态特性,较宽的调速范围和恒转矩区域,电机及其控制系统效率高等优点,转子磁场定向矢量控制策略是可行的.

Electric Vehicle Motor Drive Control System Realized by Dual CPU

A vector control system for electric vehicle (EV) induction motor drives system is designed and developed. Its hardware system based on dual CPU-microcomputer 80C196KC and digital signal processor (DSP) TMS320F240 is implemented. The fundamental mathematics equations of induction motor in the general synchronously rotating reference frame (m-t frame) used for vector control are achieved by coordinate transformation. Rotor flux equation and torque equation are respectively deduced. The rotor fulx field-oriented vector control method is implement based on these mathematical models in system software. The software program flow is presented. Some of the simulation results with MATAB/SIMULAINK and test reults are given. The simulation and test results show that the vector control system based on dual CPU for EV induction motor drives system has better dynamic performance, widely variable speed range and constand torque sector, therefore te rotor flux field-oriented vector control method was practically verified.