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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。
Based on the TMS320LF2407 DSP as the control core, an all-digital space voltage vector pulse width modulation control system is constructed. The basic principle and control method of voltage space vector pulse width modulation (SVPWM) are described. According to the load characteristics of induction motor, Characteristics of two aspects of analysis, proposed for the induction motor load optimization strategy. Finally, the control system of asynchronous motor SVPWM is simulated by Matlab Simulink. The simulation results show that the system can improve the utilization of energy, reduce harmonics, simple structure and easy control, meanwhile have the advantages of small torque ripple, low noise and voltage utilization High rate of advantages.