Turn-to-turn capacitance variations correlated to PDIV for AC motors monitoring

Author

Savin, S. ; Ait-Amar, S. ; Roger, D.

Author_Institution

Univ. Lille Nord de France, Lille, France

Volume

20

Issue

1

fYear

2013

fDate

Feb-13

Firstpage

34

Lastpage

41

Abstract

The paper deals with a new indicator for monitoring the turn-to-turn insulation aging of ac motors. Measurements of capacitance and Partial Discharge Inception Voltage (PDIV) were performed on a large number of twisted pairs of enameled wires between standard thermal accelerated aging cycles. A significant increase of the capacitances and a reduction of the PDIV were noted on all the samples for three different diameters of enameled wires. The correlation of the capacitance increase with the degradation of the insulation quality opens perspectives for preventive maintenance applications.

Keywords

AC motors; ageing; capacitance measurement; insulation; partial discharge measurement; voltage measurement; AC motors monitoring; PDIV; capacitance measurements; enameled wires; insulation quality; partial discharge inception voltage measurements; standard thermal accelerated aging cycles; turn-to-turn capacitance variations; turn-to-turn insulation aging; twisted pairs; Aging; Capacitance; Capacitance measurement; Insulation; Partial discharges; Voltage measurement; Wires; Partial discharge measurement; ac motor windings; diagnostic; insulation; thermal aging; turn-to-turn capacitance;

fLanguage

English

Journal_Title

Dielectrics and Electrical Insulation, IEEE Transactions on

Publisher

ieee

ISSN

1070-9878

Type

jour

DOI

10.1109/TDEI.2013.6451339

Filename

6451339