Detection of inter-coil short circuits in coils of salient pole synchronous generator  field winding on the basis of analysis of magnetic field in the machine

Authors

This paper deals with detection of inter-coil short

circuits in coils of the salient pole synchronous generator field

winding, on the basis of the analysis of the magnetic field in the

machine. Applying FEM to the generator model, magnetic field

wave forms in the machine were calculated, on the points of

interests, under both, faultless and faulty conditions. When

results were compared, changes in wave forms caused by the

analyzed fault were identified. Using the model, flux density

and magnetic flux were calculated on the points accessible for

measuring with Hall’s sensors and measuring coils in the actual

machine. The aim of this paper is a contribution in the field of

faults and failures identification in rotating machines, that is,

improvement of monitoring systems aimed for rotating machine

condition monitoring.

Ante Elez

Končar – Electric Engineering Institute Inc.

Fallerovo šetalište 22, 10000 Zagreb (Croatia)

Phone/Fax number: +00385 1 365 6290, e-mail: elez@koncar-institut.hr
Branko Tomčić

Končar – Generators and Motors, Inc.

Phone/Fax number: +00385 1 365 5135, e-mail: btomicic@koncar-gim.hr
Miroslav Petrinić

Končar – Electric Engineering Institute Inc.

Fallerovo šetalište 22, 10000 Zagreb (Croatia)

Phone/Fax number: +00385 1 365 6290, e-mail: mpetrinic@koncar-institut.hr