基于Simulink仿真的异步电机变频调速系统

Variable Frequency Speed Regulating System of Asynchronous Motor Based on Simulink Simulation

随着科技的飞速发展,交流异步电机的变频调速系统已成为新的重点研发对象。该文分析了异步电机空间矢量脉冲宽度调制控制技术的原理,利用转子磁场定向技术建立基于坐标矢量变换的变频调速系统模型,并阐述了实现该系统的控制模块。利用Simulink工具对基于SVPWM技术的异步电机变频调速系统进行仿真,仿真结果表明该变频调速系统能够提高了电压的利用率,减少了电流的谐波,有着良好的动态特性和抗干扰特性。

With the rapid development of science and technology,the variable frequency speed regulating control system of AC asynchronous motor has become a new research focus.The principle of space vector pulse width modulation(SVPWM)control technology of the induction motor is analyzed in this paper.By using the rotor field orientation technology,the model of variable frequency speed regulation system based on the coordinate vector transformation is established.Also,the control module of the system is described.The Simulink software is utilized to simulate the variable frequency speed regulating system of induction motor based on the SVPWM technology.The simulation results demonstrate that the designed frequency speed regulating system improves the utilization rate of voltage and reduces the harmonics of current and has good dynamic characteristics and antiinterference characteristics.