磁浮车用直线电机微机控制系统的研究

A Study on Microcomputer Control System for LIM of MAGLEV

论述了运用瞬时空间电压矢量理论研制的磁浮车直线电机牵引控制系统，通过控制非零空间电压矢量的输出，使电动机气隙磁通沿准圆形轨迹运行；通过对准圆形轨迹上的零电压矢量的控制，改变逆变器的平均电压和平均频率。为消除单边直线电机垂直力的影响，采用恒定转差频率控制。系统由８０９８单片机实现。

This paper describes the propulsion control system based on instantaneous spatial vector control theroy. By controlling the output of the non-zero vectors, the flux in the motor gap will run along a polygon, which approximates a circle; by controlling the output of zero vectors on the side of the polygon, the mean voltage and the mean frequency of the inverter are varied as expected. In order to avoid the vertical force affects as disturbance to levitation system, the constant slip control method is adopted. This system is fully digitized by the microprossor-MCS8098, and the results of running test for low power motor are presented.