以TMS320LF2407型DSP为控制核心构建一全数字化空间电压矢量脉宽调制控制系统,阐述了电压空间矢量脉宽调制(SVPWM)的基本原理和控制实现方法,针对感应电机负载特性,对开关损耗和谐波特性2个方面进行分析,提出适于感应电机负载的优化策略.最后用Matlab的Simulink对异步电动机的SVPWM的控制系统进行仿真,仿真结果表明该系统可提高能量的利用率,谐波减少,结构简单,便于控制,同时具有转矩脉动小、噪声低、电压利用率高等优点.%With TMS320LF2407 DSP as control core of a digital space voltage vector control system,this paper expounds the basic principle of SVPWM and control method,and then according to the load characteristics of induction motor and the analysis of switch loss and harmonic characteristic,an optimization strategy suitable for load of induction motor is proposed.Finally,simulations are made for asynchronous motor SVPWM control system by using the Simulink in the MATLAB.The simulation results show that this system has a lot of advantages which can improve energy utilization and reduce harmonic.The structure is simple and easy to control,and has the characteristics of small torque ripple,low noise,and high utilization rate of voltage.
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