Title :
Sensorless field oriented control of a PM motor including zero speed
Author :
Rasmussen, H. ; Vadstrup, P. ; Børsting, H.
Author_Institution :
Aalborg Univ., Denmark
Abstract :
This paper presents a simple control method for controlling permanent magnet synchronous motors (PMSM) in a wide speed range without a shaft sensor. The method estimates the stator flux by integration of the measured BEMF signal. To compensate for the offset in the BEMF the offset is estimated. The control method is made robust at zero and low speed by changing the direct vector current component to a value different from zero. In order to verity the applicability of the method the controller has been implemented and tested on a 800 W motor.
Keywords :
compensation; control system synthesis; machine testing; machine theory; machine vector control; permanent magnet motors; robust control; stators; synchronous motors; velocity control; 800 W; PM motor; measured BEMF signal; permanent magnet synchronous motors; robust control method; sensorless field oriented control; stator flux; wide speed range; zero speed; Brushes; DC motors; Energy efficiency; Equations; Induction motors; Open loop systems; Rotors; Sensorless control; Stators; Voltage control;
Conference_Titel :
Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International
Print_ISBN :
0-7803-7817-2
DOI :
10.1109/IEMDC.2003.1210396
