Title :
Sensorless position estimation for symmetric cage induction motor under loaded conditions
Author :
TESKE, Nikolas ; Asher, Greg M. ; Sumner, Mark ; Bradley, Keith J.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nottingham Univ., UK
Abstract :
This paper presents sensorless position estimation using a conventional or “symmetric” cage-induction motor. The rotor position information is obtained by high frequency injection and using the modulating effect of the rotor slots. This makes true sensorless position control possible. The deteriorating effect of saturation harmonics for operation at full flux and higher loads is suppressed by using a harmonic compensation scheme based on parameters obtained from an automated commissioning process. Experimental results are presented showing sensorless position estimation at full flux and high loads. For a conventional machine, such high-load results have not been published before
Keywords :
compensation; harmonics suppression; machine vector control; parameter estimation; position control; rotors; squirrel cage motors; full flux; harmonic compensation scheme; high frequency injection; load suppression; loaded conditions; rotor position information; rotor slots modulation; saturation harmonics; sensorless position estimation; symmetric cage induction motor; vector control; Data mining; Frequency estimation; Inductance; Induction machines; Induction motors; Position control; Rotors; Sensorless control; Stators; Voltage;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.882129