Title :
Sensorless speed control of permanent magnet motors with torque ripple minimization
Author :
De Angelo, Cristian ; Bossio, Guillermo ; García, Guillermo ; Solsona, Jorge ; Valla, María Inés
Author_Institution :
Grupo de Electronica Aplicada, Univ. Nacional de Rio Cuarto, Argentina
Abstract :
A sensorless speed control strategy for permanent magnet AC machines with nonsinusoidal EMF waveform is presented in this paper. First, a nonlinear observer is proposed to estimate the EMF as well as rotor speed. Assuming that the EMF waveform is unknown, a high gain observer is proposed to estimate the time derivative of the position derivative of linked flux, which is needed for the EMF estimation. Then, the estimates are employed in the implementation of a torque control with minimum ripple. The performance of the proposal is validated through simulation.
Keywords :
AC motors; machine control; observers; permanent magnet motors; rotors; torque control; high gain observer; linked flux; nonlinear observer; nonsinusoidal EMF waveform; permanent magnet AC motors; position derivative; rotor speed; sensorless speed control; torque control; torque ripple minimization; AC machines; Magnetic flux; Mechanical sensors; Permanent magnet motors; Permanent magnets; Rotors; Sensorless control; Stators; Torque; Velocity control;
Conference_Titel :
IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]
Print_ISBN :
0-7803-7474-6
DOI :
10.1109/IECON.2002.1187589
