Electric field investigation in IGBT power modules

Power module reliability can be increased if problems due to high electric fields can be better understood. This paper proposes a global analysis using finite element simulations. Results are confirmed thanks to optical detection of partial discharge localization. Solutions to reduce field reinforcement are proposed and discussed. A discussion of maximum electric field handled by insulation gel is also provided.

[1]  G. Mitic,et al.  IGBT module technology with high partial discharge resistance , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[2]  Emmanuel Dutarde,et al.  Partial discharge detection in power modules , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[3]  Olivier Lesaint,et al.  Streamer initiation in mineral oil. Part I: electrode surface effect under impulse voltage , 2002 .

[4]  O. Lesaint,et al.  Electric field investigation in high voltage power modules using finite element simulations and partial discharge measurements , 2003, 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003..

[5]  G. Lefranc,et al.  Localisation of electrical-insulation- and partial-discharge failures of IGBT modules , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[6]  Josef Bauer,et al.  6.5 kV IGBT-modules , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).