Influence of inverter switching conditions on PMBLDC motor performance

Abstract EN

Permanent Magnet Brushless DC (PMBLDC) motors are generally powered by a conventional three-phase voltage source inverter (VSI) or current source inverter (CSI) which is controlled using rotor position.

By varying the commutation (switching) angles of the transistors in the inverter circuit, the performance of these motors could be greatly varied.

This can studied in this paper using the dynamic motor model, which was performed using Matlab / Simulink software package.

A study on the influence of switching angles on motor performance shows that the motor operates better when advancing the switching angle, and there is certain angle at which the motor operates with the highest efficiency.

An improvement of the different operating characteristics of PMBLDC motor has been accomplished by adjusting the chosen set of the switching angles and using appropriate conduction angles.