基于TSPWM的车用交流感应电机控制器设计

Design of AC Induction Motor Controller for Vehicle Based on TSPWM

针对低速电动车所用两电平逆变器共模电压(CMV)严重的问题,采用新型PWM调制方法 TSPWM(Tristate Space Pulse Width Modulation),结合英飞凌32位微控制芯片XMC4200,在不增加硬件成本的条件下,设计了一套共模电压明显减小的车用交流感应电机控制器。提出了基于基本电压矢量作用时间和三相PWM占空比的TSPWM新的实现方法。研究了TSPWM与XMC4200结合产生新型PWM信号的方法,同时利用Matlab/Simulink和Dave3分别自动生成控制算法和底层驱动代码,并装载到以XMC4200为核心的电机控制器中进行试验。试验表明,采用TSPWM控制的感应电机具有较小的共模电压,所设计的控制器实现简单,具有较好的控制性能。

In view of the problem that the serious common mode voltage （CMV） of two level inverter for low speed electric vehicle, under the condition of not increasing the cost of hardware, an AC induction motor controller that reduced common mode voltage obviously for vehicle was designed, utilizing the novel PWM modulation method TSPWM （Tristate Space Pulse Width Modulation） , combined with Infineon 32 bit microcontroller XMC4200. The new implementation method of TSPWM based on basic voltage vector action time and three-phase PWM duty cycle was proposed. The combination method of TSPWM and XMC4200 to generate the novel PWM signal was studied. The control algorithm and driver code was generated by Matlab/Simulink and Dave3 respectively. Experiment was conducted by loading the control code into the motor con- troller which considered XMC4200 as its core. The experiment shows that the CMV of motor controlled by TSPWM is lower, and the designed controller is implemented simply and has good control performance.