Model and simulation of brushless DC motor based on SVPWM control

ZHANG Jie
(Tianjin Port Information Technology Development Co., Ltd., Tianjin 300450, China)

Abstract: Aiming at the square wave drive torque pulses of traditional brushless DC motor(BLDCM) control system is high, the mathematical model of the twophase brushless DC motor was established based on space vector pulse width modulation(SVPWM) control method of the sine wave drive permanent magnet brushless DC motor control system. Simulation models of speed of brushless DC motor under SVPWM control and control system of current double closedloop were built by the simulation platform of Matlab/Simulink. The results indicate that brushless DC motor control system has good static and dynamic characteristics under the control of the  voltage space vector, and the reasonability and validity of the simulation model are verified.
Key words: space vector pulse width modulation(SVPWM); brushless DC motor(BLDCM); modeling; SimPowerSystems