VSVPWM交流调速系统的建模与仿真

Modeling and Simulation for AC Adjustable Speed System of VSVPWM Control

针对交流调速系统的非线性和强耦合等特点 ,本文根据电压空间矢量脉宽调制 (VSVPWM)的控制原理 ,应用MATLAB SIMULINK仿真软件建立了转速闭环控制器模块和VSVPWM交流变频调速系统仿真模型。为了验证模型的正确性 ,本文对变转速恒负载和恒转速变负载的条件进行了仿真 ,同时对VSP

Considering the nonlinear and coupled characters of the AC adjustable speed control system, based on the control principle of the voltage space vector PWM(VSVPWM), the simulated model of AC adjustable speed system of VSVPWM control is established by using MATLAB/SIMULINK software in this paper, including the simulation blocks of speed closed loop control. In order to verify the simulation models, some simulation research is presented on condition of variable speed constant load and constant speed variable load. At the same time, the stator harmonic currents of induction motor are analyzed and compared for the control of VSVPWM and traditional SPWM.