DocumentCode :
1980822
Title :
Sliding Mode MRAS Speed Estimators for Sensorless Control of Induction Machine under Improper Rotor Time Constant
Author :
Comanescu, Mihai ; Batzel, Todd
Author_Institution :
Penn State University - Altoona College, Altoona, Pennsylvania. Email: muc23@psu.edu
fYear :
2007
fDate :
4-7 June 2007
Firstpage :
2226
Lastpage :
2231
Abstract :
The paper discusses the speed estimation accuracy of two Sliding Mode Model Reference Adaptive System observers under improper rotor time constant. The SM MRAS observers are used for speed estimation in a sensorless direct field oriented (DFO) induction machine (IM) drive. In a sensorless DFO drive, the rotor fluxes are estimated based on the measured voltages/currents and are used for field orientation. Speed estimation by the rotor flux MRAS method is attractive since the reference quantities (rotor fluxes) are already available. Classic MRAS or SM MRAS speed estimators are viable alternatives and they work well under ideal conditions. The paper analyzes the speed estimation error of the SM MRAS observers under real conditions (improper rotor time constant and nonideal integration) and compares it with the Classic MRAS method.
Keywords :
Equations; Estimation error; Induction machines; Observers; Rotors; Samarium; Sensorless control; State estimation; Steady-state; Voltage;
fLanguage :
English
Publisher :
ieee
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
Type :
conf
DOI :
10.1109/ISIE.2007.4374954
Filename :
4374954
Link To Document :
بازگشت