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Title: Instrument for analysis of electric motors based on slip-poles component

Abstract

A new instrument is described for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician. 4 figs.

Inventors:
; ;
Issue Date:
Research Org.:
Lockheed Martin Energy Syst Inc
OSTI Identifier:
403651
Patent Number(s):
5,578,937
Application Number:
PAN: 8-414,679
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 26 Nov 1996
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; ELECTRIC MOTORS; DIAGNOSTIC TECHNIQUES; MEASURING INSTRUMENTS; DESIGN; REMOTE SENSING; VELOCITY; ELECTRIC CURRENTS; NOISE

Citation Formats

Haynes, H D, Ayers, C W, and Casada, D A. Instrument for analysis of electric motors based on slip-poles component. United States: N. p., 1996. Web.
Haynes, H D, Ayers, C W, & Casada, D A. Instrument for analysis of electric motors based on slip-poles component. United States.
Haynes, H D, Ayers, C W, and Casada, D A. Tue . "Instrument for analysis of electric motors based on slip-poles component". United States.
@article{osti_403651,
title = {Instrument for analysis of electric motors based on slip-poles component},
author = {Haynes, H D and Ayers, C W and Casada, D A},
abstractNote = {A new instrument is described for monitoring the condition and speed of an operating electric motor from a remote location. The slip-poles component is derived from a motor current signal. The magnitude of the slip-poles component provides the basis for a motor condition monitor, while the frequency of the slip-poles component provides the basis for a motor speed monitor. The result is a simple-to-understand motor health monitor in an easy-to-use package. Straightforward indications of motor speed, motor running current, motor condition (e.g., rotor bar condition) and synthesized motor sound (audible indication of motor condition) are provided. With the device, a relatively untrained worker can diagnose electric motors in the field without requiring the presence of a trained engineer or technician. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {11}
}