Wael, A. Salah and Ishak, Dahaman and Abu_Al_Aish, Amir and Abu Zneid, Basem and Abu Sneineh, Anees
(2014)
Commutation Time Estimator For PM BLDC Motor Torque Signature Enhancement.
Journal of Engineering Science and Technology, 9 (6).
pp. 782-791.
ISSN 1823-4690
Abstract
This paper presents the development of the commutation time estimator (CTE)
for PM BLDC motor drives. The proposed scheme is aimed to enhance motor
output torque by minimizing the generated torque ripples. The torque ripples
originating from commutation instances cause spikes and dips in the motor
output torque. The motor output torque could be enhanced by mitigating the
phase current mismatch rate during phase current commutation period. This rate
could be almost matched by introducing the commutation time estimator (CTE)
in order to control the rate of the energized phase current to be matched with the
de-energized phase rate. Results obtained have validated and verified the
proposed CTE effectiveness with a 50% average reduction of the generated
torque ripples in PM BLDC motor.
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