Simulation on matrix converter fed induction motor by space vetor control system

LIU Dong-liang1，2， ZHENG Xie-hui1， ZHANG Yao1
（1. College of Automation， Hangzhou Dianzi University， Hangzhou 310018， China；
2. Wolong Electric Co.， Ltd.，  Shangyu 312300， China）

Abstract： Aiming at the problems as slow response and low power factor of conventional matrix converter when it is controlling the motor speed by PWM，the method applied to the matrix converter was presented which was based on the dual space vector modulation algorithm. The current space vector and voltage space vector was analyzed，the modulation strategy of virtual AC-DC-AC were deduced，the method of integrating two space vector modulation was put forward，and five space vector duty ratio was gotten，the two-way switch was drived. Based on the matrix converter，the four-quadrant operation of motor was realized，and the influence of harmonic current was reduced. At last，the matrix converter simulation model by using the S function in Matlab/Simulink was established，and the simulation and experiment on the system was conducted. The research  results demonstrate the effectiveness and validity of the system.
Key words： matrix converter（MC）； space vector modulation； control strategy； induction motor； simulation