Title :
Aging investigation of motor winding insulation subjected to PWM-supply through PD measurements
Author :
Fabiani, D. ; Cavallini, A. ; Montanari, G.C.
Author_Institution :
LIMAT-DIE, Bologna Univ., Italy
Abstract :
This paper deals with an investigation of the relationship between partial discharge (PD) activity and aging of PWM-controlled motors. Online and offline PD measurements were carried out with the purpose of evaluating PD inception voltage, amplitude and repetition rate on motors aged by different electrical stresses. As insulation degradation progresses, PD inception voltage decreases, while PD amplitude and repetition rate raises. It is shown that these procedures can constitute an effective tool for quality control on manufactured motors, as well as for aging diagnosis on motor windings during operation.
Keywords :
ageing; electric motors; insulation testing; machine control; machine insulation; machine windings; partial discharge measurement; power supplies to apparatus; pulse width modulation; quality control; PD inception voltage; PWM-controlled motor; PWM-supply; aging diagnosis; electrical stress; insulation degradation; motor winding insulation; partial discharge measurement; quality control; Aging; Degradation; Electric variables measurement; Insulation; Partial discharge measurement; Partial discharges; Pulse width modulation; Quality control; Stress measurement; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2005. CEIDP '05. 2005 Annual Report Conference on
Print_ISBN :
0-7803-9257-4
DOI :
10.1109/CEIDP.2005.1560713
