Modelling and simulation of control system for brushless DC motor
by Hua Ji, Zhiyong Li
International Journal of Modelling, Identification and Control (IJMIC), Vol. 7, No. 4, 2009

Abstract: Based on the mathematical model of the brushless DC motor (BLDCM), using a novel method of modularisation design for modelling and simulation, the isolated functional blocks, for instance, BLDCM body block, speed PI controller block, current hysteresis controller block, current reference block, inverter block and commutation logic block, have been modelled in Matlab/Simulink. By the organic combination of these blocks, the simulation model of control system for BLDCM has been established. Additionally, some simulation works such as current waveform, back EMF waveform, torque curve and rotor speed curve have been done in this study. The simulation results indicate that the established model based on the new method proposed in this study has a good response to the rotor speed and torque and possesses quick simulation pace, which offers foundation for the design of actual motor control system.

Online publication date: Fri, 14-Aug-2009

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