Title :
A simple and robust adaptive controller for detuning correction in field oriented induction machines
Author :
Moreira, J.C. ; Hung, K.T. ; Lipo, T.A. ; Lorenz, R.D.
Author_Institution :
Whirlpool Corp. R&E, Benton Harbor, MI, USA
fDate :
Sept. 28 1991-Oct. 4 1991
Abstract :
An adaptive controller for correcting the rotor time constant estimate used in the slip frequency calculator of indirect field oriented controllers is presented. The controller possess near digital deadbeat performance, and simultaneously maintains its correctness down to zero speed. The robust controller dynamics are based on an operating point form of digital deadbeat control. In this controller, an operating point approximate inverse model relates changes in the machine parameters to deviation in the rotor flux components. This allows nearly exact, one step (deadbeat) prediction of the correction necessary for the slip calculator gain.<>
Keywords :
adaptive control; asynchronous machines; digital control; machine control; magnetic flux; rotors; slip (asynchronous machines); adaptive controller; approximate inverse model; asynchronous machines; detuning correction; digital deadbeat performance; dynamics; field oriented; gain; machine control; magnetic flux; operating point; prediction; rotor time constant; slip frequency; Adaptive control; Digital control; Frequency estimation; Induction machines; Inverse problems; Programmable control; Robust control; Rotors; Stators; Torque control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Dearborn, MI, USA
Print_ISBN :
0-7803-0453-5
DOI :
10.1109/IAS.1991.178186
