Title :
Zero frequency rotor position detection for synchronous PM motors
Author :
Consoli, Alfio ; Scarcella, Giuseppe ; Tutino, Giuseppe ; Testa, Antonio
Author_Institution :
DEES, Catania Univ., Italy
Abstract :
The paper presents a simple but effective approach to determine the position of the rotor in synchronous PM machines at any operating condition, including very low and zero speed. The proposed approach is based on the addition of a high frequency stator voltage component and on a demodulation of the zero sequence voltage. Compared to previous sensorless schemes, it allows zero speed operations, does not need any initial identification of the rotor position, and can be inexpensively implemented. Experimental tests are shown in order to practically confirm the expected features of the proposed system
Keywords :
control system synthesis; machine testing; machine theory; machine vector control; parameter estimation; permanent magnet motors; position control; rotors; synchronous motors; velocity control; control design; control performance; high frequency stator voltage component; operating condition; synchronous PM motors; zero frequency rotor position detection; zero sequence voltage demodulation; zero speed operations; Demodulation; Filtering theory; Frequency; Rotors; Sensorless control; Stators; Synchronous motors; System testing; Torque control; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2000. PESC 00. 2000 IEEE 31st Annual
Conference_Location :
Galway
Print_ISBN :
0-7803-5692-6
DOI :
10.1109/PESC.2000.879930
