Title :
Adaptive speed identification for vector control of induction motors without rotational transducers
Author_Institution :
Westinghouse Electric 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 has been implemented on a 30 hp laboratory drive, where its effectiveness has been verified
Keywords :
induction motors; machine control; model reference adaptive control systems; 30 hp; MRAS; induction motors; model-reference adaptive system; speed estimation; terminal currents; terminal voltages; vector control; Adaptive control; Adaptive systems; Bandwidth; Current measurement; Feedback; Induction motors; Machine vector control; Programmable control; Velocity measurement; Voltage;
Journal_Title :
Industry Applications, IEEE Transactions on
