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

D. R. Bertenshaw; A. C. Smith

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

D. R. Bertenshaw
, A. C. Smith

The University of Manchester

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

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.

Original language	English
Title of host publication	PEMD 2014, The 7th IET international conference on Power Electronics, Machines and Drives
Place of Publication	London
Publisher	Institution of Engineering and Technology
Pages	0052/1-0052/6
Publication status	Published - 9 Apr 2014
Event	PEMD 2014 - Power Electronics, Machines and Drives Conferebce - Manchester Duration: 8 Apr 2014 → 10 Apr 2014

Conference

Conference	PEMD 2014 - Power Electronics, Machines and Drives Conferebce
City	Manchester
Period	8/04/14 → 10/04/14

Keywords

EL CID
Electromagnetic stator test
Stator core
Condition monitoring
Harmonics

Cite this

@inproceedings{38eaa5ccaf64462897fdcbb30da14571,

title = "The impact of non-linear permeability on electromagnetic stator core tests",

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.",

keywords = "EL CID, Electromagnetic stator test, Stator core, Condition monitoring, Harmonics",

author = "Bertenshaw, \{D. R.\} and Smith, \{A. C.\}",

year = "2014",

month = apr,

day = "9",

language = "English",

pages = "0052/1--0052/6",

booktitle = "PEMD 2014, The 7th IET international conference on Power Electronics, Machines and Drives",

publisher = "Institution of Engineering and Technology ",

address = "United Kingdom",

note = "PEMD 2014 - Power Electronics, Machines and Drives Conferebce ; Conference date: 08-04-2014 Through 10-04-2014",

}

The impact of non-linear permeability on electromagnetic stator core tests. / Bertenshaw, D. R.; Smith, A. C.
PEMD 2014, The 7th IET international conference on Power Electronics, Machines and Drives. London: Institution of Engineering and Technology , 2014. p. 0052/1-0052/6.

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The impact of non-linear permeability on electromagnetic stator core tests

AU - Bertenshaw, D. R.

AU - Smith, A. C.

PY - 2014/4/9

Y1 - 2014/4/9

N2 - 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.

AB - 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.

KW - EL CID

KW - Electromagnetic stator test

KW - Stator core

KW - Condition monitoring

KW - Harmonics

M3 - Conference contribution

SP - 0052/1-0052/6

BT - PEMD 2014, The 7th IET international conference on Power Electronics, Machines and Drives

PB - Institution of Engineering and Technology

CY - London

T2 - PEMD 2014 - Power Electronics, Machines and Drives Conferebce

Y2 - 8 April 2014 through 10 April 2014

ER -

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

Abstract

Conference

Keywords

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Cite this