Title :
Partial discharges in dielectric liquids
Author :
Do, M.T. ; Augé, J.L. ; Vu, T.A.T. ; Catellani, S.
Author_Institution :
Inst. for Elkraftteknikk, NTNU, Trondheim
Abstract :
In this paper, we have investigated the behavior of dielectric properties (partial discharges) of liquids of different natures (silicon oil, aromatic liquid). Partial discharges measurements have been done over the voltage range (0-25 kVpp). Two types of devices have been analyzed. The first one consists of a ceramic covered by liquid, the second one of a needle-plane system embedded in liquid. The origin of partial discharges for the both devices is discussed. A mixture of corona effect and discharge in micro voids appear for the ceramic based system whereas only the corona effect was identified for the second one. Results are then discussed in correlation with potential applications in power electronic components where rubber and gel are used for IGBT module.
Keywords :
corona; dielectric liquids; insulated gate bipolar transistors; partial discharge measurement; power electronics; IGBT module; aromatic liquid; ceramic based system; corona effect; dielectric liquids; gel; microvoids; needle-plane system; partial discharges; power electronic components; rubber; silicon oil; voltage 0 kV to 25 kV; Ceramics; Corona; Dielectric liquids; Dielectric measurements; Partial discharges; Petroleum; Power electronics; Rubber; Silicon; Voltage;
Conference_Titel :
Electrical Insulating Materials, 2008. (ISEIM 2008). International Symposium on
Conference_Location :
Mie
Print_ISBN :
978-4-88686-005-7
Electronic_ISBN :
978-4-88686-006-4
DOI :
10.1109/ISEIM.2008.4664537
