Comparative Evaluation and Analysis of Six- and Four-Switch Drivers for PMBLDC Motor Control

Abstract

PMBLDC motor is vital in this modern industrial age. It has vast applications and most preferable compared to the conventional DC motor for its less noise, electrical commutation, and high speed. Therefore, the need to design a driver circuit with good control capability cannot be over emphasized. This work aims to design both the six-and four-switch driver circuits for effective PMBLDC motor control. An optimization technique was employed to smoothen and enhance the system’s performance. The simulation output of both the driving strategy was analysed and the system settling time, overshoot, undershoot and rise time were matched to choose the most effective driver circuit with the best control approach. The resultant output also shows the Six-Switch Three-Phase Driver Circuit (SSTPDC) is better in terms of speed, stability, rise time and settling time when matched to the Four-Switch Three-Phase Driver Circuit (FSTPDC). However, the FSTPDC is cost-effective and less structure complex. It is worth knowing that both driving strategies have good reference tracking.