Partial discharge characteristics of inverter-fed motor coil samples under ac and surge voltage conditions

Author

Okubo, Hitoshi ; Lu, Yonghu ; Hayakawa, Naoki

Author_Institution

Center for Integrated Res. in Sci. & Eng., Nagoya Univ., Japan

fYear

2003

fDate

19-22 Oct. 2003

Firstpage

589

Lastpage

592

Abstract

We discussed the partial discharge (PD) characteristics of inverter-fed motor coil samples under surge voltage condition and compared with those under ac voltage application. PD light emission images and PD light intensity waveforms were simultaneously measured to obtain the PD inception characteristics. The differences in the PD characteristics under ac and surge voltage conditions were investigated for the insulation design of inverter-fed motors. It was found that the PDIV under surge voltage condition was 1.6-1.8 times and 2.3-2.7 times higher than those under ac voltage application for the used and virgin samples respectively, and the PD inception mechanisms were clarified.

Keywords

AC motors; arresters; invertors; partial discharges; ac voltage conditions; fight intensity waveforms; inception characteristics; inverter-fed motor coil samples; light emission image; partial discharge characteristics; surge voltage conditions; AC motors; Capacitors; Computed tomography; Current measurement; Dielectrics and electrical insulation; Frequency; Partial discharges; Stress; Surges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2003. Annual Report. Conference on

Print_ISBN

0-7803-7910-1

Type

conf

DOI

10.1109/CEIDP.2003.1254923

Filename

1254923