NDLI: An Induction-Motor Speed Estimator Based on Integral Sliding-Mode Current Control

Content Provider	IEEE Xplore Digital Library
Author	Comanescu, M.
Copyright Year	1982
Abstract	This paper presents a speed-estimation method for the induction-motor (IM) drive that is based on a special current-control scheme called integral sliding-mode current control (ISM-CC). classic current control for the IM drive is done by regulating the d-q synchronous reference frame currents using PI controllers with or without a decoupling compensator. If a decoupling compensator is used, the speed and the motor parameters are needed to compute the decoupling voltages. Often, the speed (or the speed estimate) is not available, and the decoupling compensator is omitted; this leads to a degraded performance of the current controller. The ISM-CC scheme was developed for the decoupled control of the d-q currents and does not require the knowledge of the speed. In the ISM-CC, PI controllers act on simulated ideal plant models, and the resulting command voltages are complemented with voltages generated by SM controllers. It is shown that the SM controllers play the same role as the compensation voltages produced by a decoupling compensator. The speed estimator is constructed based on this observation-speed is estimated through algebraic calculations. This paper describes both the ISM-CC method and the speed estimator. Simulations and experimental results on a 1/4-hp three-phase IM confirm the validity of the method.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	3414
Ending Page	3423
Page Count	10
File Size	1383952
File Format	PDF
ISSN	02780046
Volume Number	56
Issue Number	9
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current control Sensorless control Rotors Voltage control Samarium Sliding mode control Stators Velocity measurement Velocity control Synchronous motors speed estimation Current control (CC) induction motor (IM) integral sliding mode (ISM) sensorless control
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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