Title :
Analysis of torque ripple due to phase commutation in brushless DC machines
Author :
Carlson, Renato ; Lajoie-Mazenc, M. ; Fagundes, Joao C dos S
Author_Institution :
GRUCAD/EEL/Univ. Federal de Santa Caterina, Florianopolis, Brazil
Abstract :
An original analytical study is developed concerning the torque undulation due to phase commutation on brushless DC motors. 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 undulation and the duration of the commutation are analyzed, showing how this affects the torque-speed curve of the drive. Simulation and experimental results are presented that validate the theoretical analysis.<>
Keywords :
DC motors; commutation; machine theory; torque; brushless DC machines; 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;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152200
