Title :
Analysis of torque ripple due to phase commutation in brushless DC machines
Author :
Carlson, Renato ; Lajoie-Mazenc, Michel ; Fagundes, Joao C dos S
Author_Institution :
Dept. of Electr. Eng., Univ. Federal do Rio Grande do Sul, Florianopolis, Brazil
Abstract :
An original analytical study concerning the torque ripple due to phase commutation on brushless DC motors is developed. The results indicate that the relative ripple is independent of current, varies with speed, and may reach 50% of the average torque. The amplitude of the torque ripple and the duration of the commutation are analyzed, showing how this affects the torque-speed curve of the drive. Simulation as well as experimental results that validate the theoretical analysis are presented
Keywords :
DC motors; commutation; electric drives; machine theory; torque; amplitude; brushless DC machines; duration; electric drives; machine theory; motors; phase commutation; torque ripple; torque-speed curve; Analytical models; Brushless DC motors; Commutation; DC machines; Forging; Hysteresis; Magnetic analysis; Pulse width modulation; Pulse width modulation inverters; Torque;
Journal_Title :
Industry Applications, IEEE Transactions on
