Significance of joints due to lamination segmentation on shaft current in induction machine

Author

Ong, Raymond ; Dymond, J.H. ; Findlay, R.D. ; Szabados, B.

Author_Institution

GE Ind. Syst., Peterborough, Ont., Canada

fYear

1999

fDate

36281

Firstpage

487

Lastpage

489

Abstract

An industry-university research partnership program between GE Peterborough and McMaster University (Canada) was instituted to study shaft current phenomenon in an 8-pole 2611 kW induction machine. The study reviewed all the possible causes of bearing damage. A series of experimental tests were carried out to determine the cause(s) of the shaft current. These tests include oil analysis, bearing damage analysis and no-load running tests. The test results are presented. The tests were conducted using a novel method of shaft current measurement. In addition to the test results, this paper presents a simplified pictorial representation of the significance of joints due to lamination segmentation on the occurrence of shaft current. The paper also includes shaft voltage prediction rules

Keywords

asynchronous machines; electric current measurement; laminations; machine bearings; machine testing; 2611 kW; Canada; bearing damage; bearing damage analysis; induction machine; joints significance; lamination segmentation; no-load running tests; oil analysis; shaft current; shaft current measurement; shaft voltage prediction rules; Current measurement; Induction machines; Joining processes; Lamination; Monitoring; Petroleum; Shafts; Stators; Testing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Machines and Drives, 1999. International Conference IEMD '99

Conference_Location

Seattle, WA

Print_ISBN

0-7803-5293-9

Type

conf

DOI

10.1109/IEMDC.1999.769154

Filename

769154