Title :
Low and Zero Speed Sensorless Control of nonsalient PMSM
Author :
Urlep, Evgen ; Jezernik, Karel
Author_Institution :
Faculty of Electrical Engineering and Computer Science, Institute of Robotics, University of Maribor, Maribor, Slovenia. Email: evgen.urlep@uni-mb.si
Abstract :
A speed sensorless control of nonsalient PMSM is demonstrated in this paper, where estimated rotor flux is directly utilized, instead of transformation angle. A discrete-time sliding-mode current controller in stationary frame with EMF feedforward is employed. The operation at low speed is improved by reducing the disturbance impact. The estimation angle error at zero speed is limited by injecting additional DC current that compensates for the unknown load torque and enables operation at zero speed.
Keywords :
Couplings; Data mining; Machine vector control; Mathematical model; Rotors; Sensorless control; Sliding mode control; Stators; Synchronous motors; Torque;
Conference_Titel :
Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on
Conference_Location :
Vigo, Spain
Print_ISBN :
978-1-4244-0754-5
Electronic_ISBN :
978-1-4244-0755-2
DOI :
10.1109/ISIE.2007.4374956
