Novel protection strategy for current interruptions in IGBT current source inverters

Author

Haberberger, Markus ; Fuchs, Friedrich W.

Author_Institution

Christian-Albrechts-Univ., Kiel, Germany

Volume

1

fYear

2004

fDate

20-25 June 2004

Firstpage

558

Abstract

A novel protection strategy against dc link overvoltages in IGBT current source inverters caused by current interruptions is presented. The proposed concept consists of two steps-a fast passive voltage clamp and actively turned on freewheeling paths across the dc link terminals. To implement this strategy, an electronic circuit was developed and successfully tested. The protection circuit is completely independent from normal inverter operation, has no effect on the CSI behaviour and can be realized at low cost.

Keywords

clamps; insulated gate bipolar transistors; invertors; overvoltage protection; power semiconductor switches; CSI; IGBT current source inverters; current interruptions; dc link overvoltages; electronic circuit; freewheeling paths; insulated gate bipolar transistors; inverter operation; passive voltage clamp; protection circuit; Bridge circuits; Inductors; Insulated gate bipolar transistors; Inverters; Leg; Power semiconductor switches; Protection; Semiconductor diodes; Switching circuits; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual

ISSN

0275-9306

Print_ISBN

0-7803-8399-0

Type

conf

DOI

10.1109/PESC.2004.1355808

Filename

1355808