Title :
Adaptive speed identification for vector control of induction motors without rotational transducers
Author_Institution :
Westinghouse Electr. Corp., Pittsburgh, PA, USA
Abstract :
A model-reference adaptive system (MRAS) for the estimation of induction motor speed from measured terminal voltages and currents is described. The estimated speed is used as feedback in a vector control system, thus achieving moderate bandwidth speed control without the use of shaft-mounted transducers. This technique is less complex and more stable than previous MRAS tacholess drives. It was implemented on a 30 hp laboratory drive, verifying its effectiveness.<>
Keywords :
adaptive control; electric current measurement; induction motors; model reference adaptive control systems; velocity control; voltage measurement; MRAS; adaptive speed identification; current measurement; induction motors; model-reference adaptive system; moderate bandwidth speed control; vector control; voltage measurement; Adaptive control; Adaptive systems; Bandwidth; Current measurement; Feedback; Induction motors; Machine vector control; Programmable control; Velocity measurement; Voltage;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96696
