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Research on Reduction of Commutation Torque Ripple in Brushless DC Motor Drives Based on Fuzzy Logic Control

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2 Author(s)
Yaya, S. ; Coll. of Electr. Eng., Hohai Univ., Nanjing, China ; Wang Honghua

The increase use of variable-speed drive motors to reduce energy consumption will require a shift from PID controllers to system based on fuzzy logic algorithms to simplify design, reduce development time, and eliminate complex math formulas. This paper presents an approach for minimizing torque ripple in brushless DC motor (BLDCM) due to phase commutation using fuzzy control. The BLDCM drive system based on fuzzy logic control uses double close loops with current hysteresis and speed fuzzy logic control. The traditional speed PID controller is replaced by fuzzy PI-like controller to improve the performance of the BLDCM drive system. The duty ratio is controlled by a ¿ deadbeat¿ controller to equalize the current slopes of the incoming and the outgoing phases of BLDCM during the commutation interval. The simulation results with MATLAB show the accomplishment of suppression of the spikes on the current and torque responses during the commutation intervals.

Published in:

Computational Intelligence and Security, 2009. CIS '09. International Conference on  (Volume:1 )

Date of Conference:

11-14 Dec. 2009