Current Regulated PWM Based Control for Four-Switch Three-Phase Brushless DC Motor Drives

摘要

Permanent magnet brushless dc motor (PMBLDCM) drives are continually gaining popularity in motion control applications. This paper investigates the performance of direct current controlled pulse width modulation (DCC-PWM) based control of four-switch three-phase (FSTP) inverter feeding permanent magnet brushless dc (PMBLDC) motor. A MATLAB/Simulink model for the FSTP fed PMBLDC motor is developed and tested with direct current controlled PWM method. The triumph of the DCC-PWM in obtaining desired speed-torque characteristics is validated with help of simulation results. The DCC-PWM is also implemented with proportional-integral controller using TMS320LF2407 digital signal processor.