NDLI: A New Portable, Self-Powered, and Wireless Instrument for the Early Detection of Broken Rotor Bars in Induction Motors

Content Provider	IEEE Xplore Digital Library
Author	Cabanas, M.F. Pedrayes, F. Rojas, C.H. Melero, M.G. Norniella, J.G. Orcajo, G.A. Cano, J.M. Nuno, F. Fuentes, D.R.
Copyright Year	1982
Abstract	The detection of rotor asymmetries in squirrel-cage induction motors has been an important research topic during the last two decades that has given rise to the development of various diagnostic techniques. Despite these techniques being reliable and providing much information about a machine's state, they still lack the capability to detect a failure when the motor is driving a machine, producing oscillations in the load torque. If this happens, then the motor phase currents are modulated by torque oscillations and the information that they contain about the integrity of the bars and endrings is no longer correct. Currently, the authors are not aware of a simple and reliable method that exists for the industrial diagnosis of rotor asymmetries in working cage motors under arbitrary load conditions. This paper describes a new diagnostic method and a new portable electronic instrument that are based on the measurement of the magnetic flux linked by one stator tooth, which allows for an optimal simple discrimination between the actual presence of rotor asymmetries and the spurious effects that are caused by the oscillations in the load torque of the driven machine.
Sponsorship	IEEE Industrial Electronics Society
Starting Page	4917
Ending Page	4930
Page Count	14
File Size	2420918
File Format	PDF
ISSN	02780046
Volume Number	58
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault diagnosis Finite element methods Induction motors Magnetic field measurement Microcontrollers Torque Wireless LAN wireless LAN AC motor drives electronic equipment fault diagnosis finite element methods induction motors magnetic field measurement microcontrollers monitoring torque
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Electrical and Electronic Engineering Computer Science Applications

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