Title :
Commutation strategies for brushless DC motors: influence on instant torque
Author :
Berendsen, C. ; Champenois, G. ; Davoine, J.
Author_Institution :
Lab. d´´Electrotech. de Grenoble, Saint Martin d´´Heres, France
Abstract :
A solution is presented to obtain torque smoothness of a brushless DC drive within a wide range of speeds. As the V/sub NNo/ voltage disturbs the currents during commutations and as, in the case of disjunctive EMFs, the limited loop bandwidth of the current controller does not allow the currents to follow the adapted reference, a compensative and a predictive term have been added to the duty cycle controller output.<>
Keywords :
DC motors; commutation; electric current control; electric drives; machine control; torque; brushless DC drive; brushless DC motors; commutation strategies; compensative term; current controller; disjunctive EMF; duty cycle controller output; limited loop bandwidth; predictive term; torque smoothness; Brushless DC motors; Commutation; Permanent magnets; Pulse width modulation inverters; Shape; Stators; Synchronous machines; Synchronous motors; Torque; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual
Conference_Location :
Los Angeles, CA, USA
DOI :
10.1109/APEC.1990.66440
