Title :
A singular perturbation approach to sensorless control of a permanent magnet synchronous motor drive
Author :
Song, T. ; Rahman, M.F. ; Lim, K.W. ; Rahman, Md Arifur
Author_Institution :
Sch. of Electr. Eng., New South Wales Univ., Sydney, NSW, Australia
fDate :
12/1/1999 12:00:00 AM
Abstract :
For most surface mounted permanent magnet synchronous motors, the electrical time constant is relatively small due to its large air gap. This has been exploited with small parameter perturbation techniques to develop observers for the position and speed using measurements of currents. In this paper, a singular perturbation algorithm is experimentally evaluated for both current commutation and closed loop speed control of a permanent magnet synchronous motor drive. An improved algorithm is then proposed and related implementation issues are presented
Keywords :
angular velocity control; closed loop systems; commutation; machine control; observers; permanent magnet motors; singularly perturbed systems; synchronous motor drives; closed loop speed control; current commutation; current measurement; electrical time constant; permanent magnet synchronous motor drive; position observers; sensorless control; singular perturbation algorithm; singular perturbation approach; small parameter perturbation techniques; surface mounted permanent magnet synchronous motors; Current measurement; Magnetic sensors; Permanent magnet motors; Perturbation methods; Position measurement; Rotors; Sensorless control; Synchronous motors; Velocity control; Velocity measurement;
Journal_Title :
Energy Conversion, IEEE Transactions on
