Evaluation of LV insulating systems in inverter fed electric motors by means of partial discharges

Author

Boscolo, Antonio ; Rabach, Germano ; Visintin, Massimiliano

Author_Institution

Dept. of Electrotechnics, Univ. of Trieste, Trieste

fYear

2005

fDate

7-9 Sept. 2005

Firstpage

1

Lastpage

6

Abstract

A synthetic description of the phenomena induced by PWM inverter drive systems are reported and the parameters related to motor reliability are evaluated. The winding quality of brand new motors is addressed, specifically the integrity of the turn or the conductor insulation is checked by applying surge voltage stresses. Finally Partial Discharge (PD) measurements are carried out on an aged 800 kW motor: the outcomes are reported and discussed.

Keywords

electric drives; electric motors; machine insulation; machine windings; partial discharge measurement; reliability; LV insulating systems; PWM inverter drive systems; conductor insulation; inverter fed electric motors; motor reliability; partial discharge measurements; partial discharges; power 800 kW; surge voltage stresses; synthetic description; winding quality; Aging; Conductors; Dielectrics and electrical insulation; Electric motors; Partial discharge measurement; Partial discharges; Pulse width modulation inverters; Stress; Surges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Diagnostics for Electric Machines, Power Electronics and Drives, 2005. SDEMPED 2005. 5th IEEE International Symposium on

Conference_Location

Vienna

Print_ISBN

978-0-7803-9124-6

Electronic_ISBN

978-0-7803-9125-3

Type

conf

DOI

10.1109/DEMPED.2005.4662503

Filename

4662503