基于VISSIM的永磁同步电机矢量控制系统建模与仿真

Modeling and Simulation of PMSM Vector Control System Based on VISSIM

在分析永磁同步电机(PMSM)数学模型的基础上,基于VisSim具有可拖放功能块的直观界面和强大的数学功能,建立了PMSM矢量控制系统仿真模型。系统采用双闭环控制:速度环采用PI控制,电流环采用矢量控制。仿真结果证明了该方法的有效性,同时该模型也适用于验证其他控制算法的合理性,体现了PMSM电机模型的工程化特点,为实际电机控制系统的设计和调试提供了新的思路。

Based on the mathematical model of the permanent-magnet synchronous-motor (PMSM), a PMSM vector control system model was established in VisSim5.0. The isolated functional blocks, such as PMSM block, controller block, phase voltage block, coordinate transform block, sinusoidal pulse-width-modulation (SPWM) block, speed controller block, etc., were modeled. By the organic combination of these blocks and abundant components in VisSim5.0, the control system model of PMSM could be established easily. In the double loop of control system, a PI controller is adopted in the speed loop and a vector controller is adopted in the current loop. The validity is testified by the simulation results and other control strategies can be applied to the system to testify their rationality. This novel method offers a new way for designing and debugging actual motors.