Title :
Life tests on twisted pairs subjected to PWM-like voltages
Author :
Guastavino, F. ; Coletti, G. ; Dardano, A. ; Torello, E.
Author_Institution :
Electr. Eng. Dept., Genoa Univ., Italy
Abstract :
This investigation regards the partial discharges (PD) ageing processes of motor winding insulation (enamelled wires) subjected to "fast rising and dropping" voltages, i.e. to a PWM controlled inverter drive voltage waveform. Twisted pair specimens were fed till failure by two different PWM like (and by a sinusoidal) voltages, at several voltage amplitudes, in presence of PD. The relevant life curves were traced and the PD were measured. The outcome evidenced that the life curves besides depending on the Vpp voltages they evidence a very strong connection with the relevant waveforms.
Keywords :
PWM invertors; ageing; copper; electric potential; insulated wires; life testing; machine windings; partial discharges; Cu; PD ageing processes; PWM controlled inverter drive voltage waveform; PWM like sinusoidal voltages; enamelled wires; life curves; life tests; motor winding insulation; partial discharges ageing processes; rising voltages; twisted pair specimens; voltage drop; Cable insulation; Insulation testing; Life testing; Ovens; Partial discharges; Performance evaluation; Pulse width modulation; Pulse width modulation inverters; Voltage; Wires;
Conference_Titel :
Solid Dielectrics, 2004. ICSD 2004. Proceedings of the 2004 IEEE International Conference on
Print_ISBN :
0-7803-8348-6
DOI :
10.1109/ICSD.2004.1350567
