Title :
A comparative study of rotor flux based MRAS and back EMF based MRAS speed estimators for speed sensorless vector control of induction machines
Author :
Marwali, Mohammad N. ; Keyhani, Ali
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
Abstract :
This paper seeks to provide a direct comparison between two types of induction motor MRACS based speed estimators, one based on the rotor flux and the other based on the back EMF. Comparison between the two techniques is made through computer simulations and verified with experimental results obtained from a digital signal processor (DSP) based vector control system. The performances of both techniques are evaluated in an indirect vector control system and the results are presented
Keywords :
control system analysis computing; electric machine analysis computing; induction motors; machine control; machine testing; machine theory; model reference adaptive control systems; parameter estimation; velocity control; 2.5 hp; 220 V; 7 A; MRACS-based speed estimators; back EMF; computer simulation; control simulation; digital signal processor; experimental results; indirect vector control; induction machines; rotor flux; speed sensorless vector control; Computer simulation; Current measurement; Digital signal processing; Frequency estimation; Induction machines; Machine vector control; Performance evaluation; Pulse width modulation; Rotors; State estimation;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.643022
