descriptionPublicationkeyboard_double_arrow_right Article , Conference object , Other literature type , Contribution for newspaper or weekly magazine 01 Jan 2014Publisher:Institution of Engineering and TechnologyJournal:7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)

Authors: Bertenshaw, D. R.; Smith, A. C.;

doi: 10.1049/cp.2014.0262

The impact of non-linear permeability on electromagnetic stator core tests

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Abstract

Routine electromagnetic testing is used to detect developing faults in the stator cores of large electrical machines. However the non-linear permeability and hysteresis of electrical steel cause the development of harmonics in the magnetic field, potentially affecting fault interpretation. A method to determine the Rayleigh hysteresis from specification data is developed. Since the use of sinusoidal test flux is shown to prevent an analytic solution of the magnetic field, a numeric integration is required to compute the resultant harmonics. The impact of these on the electromagnetic test is analysed and shown to be minor depending on the class of instrument.

Related Organizations

University of Salford
United Kingdom

Keywords

harmonics development, numeric integration, Rayleigh hysteresisdetermination, condition monitoring, Harmonics, nonlinear permeability impact, integration, magnetic fields, stators, hysteresismotors, magneticfield, electrical steel hysteresis, electromagnetic stator coretests, harmonics, magnetic permeability, stator, fault diagnosis, Condition monitoring, fault interpretation, sinusoidal testflux, electromagnetic, Electromagnetic stator test, electricalmachines, Stator core, resultantharmonics computation, developing fault detection, EL CID, machine testing, permeability, magneticflux, routine electromagnetic testing

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