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Title: Method and system for early detection of incipient faults in electric motors

Abstract

A method and system for early detection of incipient faults in an electric motor are disclosed. First, current and voltage values for one or more phases of the electric motor are measured during motor operations. A set of current predictions is then determined via a neural network-based current predictor based on the measured voltage values and an estimate of motor speed values of the electric motor. Next, a set of residuals is generated by combining the set of current predictions with the measured current values. A set of fault indicators is subsequently computed from the set of residuals and the measured current values. Finally, a determination is made as to whether or not there is an incipient electrical, mechanical, and/or electromechanical fault occurring based on the comparison result of the set of fault indicators and a set of predetermined baseline values.

Inventors:
;
Issue Date:
Research Org.:
Texas A And M University,College Station, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174394
Patent Number(s):
6590362
Application Number:
10/207,105
Assignee:
Texas A And M University (College Station, TX)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
H - ELECTRICITY H02 - GENERATION H02P - CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS
DOE Contract Number:  
FG07-98ID13641
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Parlos, Alexander G, and Kim, Kyusung. Method and system for early detection of incipient faults in electric motors. United States: N. p., 2003. Web.
Parlos, Alexander G, & Kim, Kyusung. Method and system for early detection of incipient faults in electric motors. United States.
Parlos, Alexander G, and Kim, Kyusung. Tue . "Method and system for early detection of incipient faults in electric motors". United States. https://www.osti.gov/servlets/purl/1174394.
@article{osti_1174394,
title = {Method and system for early detection of incipient faults in electric motors},
author = {Parlos, Alexander G and Kim, Kyusung},
abstractNote = {A method and system for early detection of incipient faults in an electric motor are disclosed. First, current and voltage values for one or more phases of the electric motor are measured during motor operations. A set of current predictions is then determined via a neural network-based current predictor based on the measured voltage values and an estimate of motor speed values of the electric motor. Next, a set of residuals is generated by combining the set of current predictions with the measured current values. A set of fault indicators is subsequently computed from the set of residuals and the measured current values. Finally, a determination is made as to whether or not there is an incipient electrical, mechanical, and/or electromechanical fault occurring based on the comparison result of the set of fault indicators and a set of predetermined baseline values.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {7}
}

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