Modeling and Simulation of Brushless DC Motor Speed Control System Based on SPWM

Abstract

This paper introduces the composition of double closed loop DC speed control system of DC motor speed and current, it is described the working principle of DC PWM converter and the calculating method of the pulse width modulation technology. Using the Matlab software to the induction motor system of modeling and simulation based on the technology of SPWM . Observed in the steady state and dynamic system using SPWM control mode and the influence of control parameters. Finally, experimental results show that the SPWM technology for effective control of double closed loop DC speed control system