Active clamping of IGBT: capacitor replaces TRANSIL diodes

Pierre Lefranc (1, 2) , Dominique Bergogne (1, 2) , Dominique Planson (1, 2) , Bruno Allard (1, 2) , Hervé Morel (1, 2) , Jean-François Roche

1 CEGELY - Centre de génie électrique de Lyon
2 INSA Lyon - Institut National des Sciences Appliquées de Lyon

Active clamping is one major security function of an IGBT driver. Transil diodes are commonly used. This paper details the investigation of an original solution without such diodes. A charged capacitor in series with a fast diode is used. Clamping voltage is continuously adjustable. Experimental results are presented.

Mots clés: Device applications; Drives; Discrete power devices; High power discrete devices

Domaines: Energie électrique

Pierre Lefranc, Dominique Bergogne, Dominique Planson, Bruno Allard, Hervé Morel, et al.. Active clamping of IGBT: capacitor replaces TRANSIL diodes. 10th European Conference on Power Electronics and Applications (EPE'2003), Sep 2003, Toulouse, France. ⟨hal-02497603⟩