Title :
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
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;
Journal_Title :
Dielectrics and Electrical Insulation, IEEE Transactions on
DOI :
10.1109/TDEI.2013.6451339
