Application of an Additional Excitation in Inverter-Fed Induction Motors for Air-Gap Eccentricity Diagnosis

Application of an Additional Excitation in Inverter-Fed Induction Motors for Air-Gap Eccentricity Diagnosis

In this paper, the application of an additional excitation in induction motor (IM) drives for static, dynamic, and mixed eccentricity diagnosis is proposed. The additional excitation consists in a predefined inverter-switching pattern that is applied on the motor for a short time, while the fundamen...

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Bibliographic Details
Published in:IEEE transactions on energy conversion Vol. 21; no. 4; pp. 839 - 847
Main Authors: Bossio, Guillermo, De Angelo, Cristian De, Solsona, Jorge, Garcia, Guillermo O., Valla, Mara I.
Format: Journal Article
Language:English
Published: New York IEEE 01-12-2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Air gaps
Air-gap eccentricity
Circuit faults
Diagnosis
Eccentricity
Electric potential
Excitation
Fault diagnosis
induction motor drives
Induction motors
Inverters
Motors
position estimation
Proposals
Rotors
Senior members
Stator windings
Strategy
Voltage
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Summary:In this paper, the application of an additional excitation in induction motor (IM) drives for static, dynamic, and mixed eccentricity diagnosis is proposed. The additional excitation consists in a predefined inverter-switching pattern that is applied on the motor for a short time, while the fundamental excitation is canceled. This excitation was used previously to implement a position estimation strategy. The strategy obtains information about the rotor position from the motor saliencies effects over the zero-sequence voltage. The air-gap eccentricity is a kind of saliency that affects the zero-sequence voltage and allows the use of the additional excitation for eccentricity diagnosis. For the evaluation of the feasibility of this proposal, a multiple-coupled circuit model of the IM is used. The effects of series and series-parallel stator winding connections on the diagnosis signals are shown. Experimental results to validate the proposal are also given. These results show that it is possible to use the diagnosis strategy in a self-commissioning scheme
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0885-8969
1558-0059
DOI:10.1109/TEC.2006.874218