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1. (WO1998053548) METHOD AND CIRCUIT FOR DISCONNECTING A CONVERTER

Pub. No.:    WO/1998/053548    International Application No.:    PCT/DE1998/001261
Publication Date: Fri Nov 27 00:59:59 CET 1998 International Filing Date: Thu May 07 01:59:59 CEST 1998
IPC: H02H 7/12
H02M 1/00
H02M 3/335
Applicants: SIEMENS AKTIENGESELLSCHAFT
BITENC, Bostjan
EISERT, Werner
LOCHTER, Werner
WOLFGART, Bernd
Inventors: BITENC, Bostjan
EISERT, Werner
LOCHTER, Werner
WOLFGART, Bernd
Title: METHOD AND CIRCUIT FOR DISCONNECTING A CONVERTER
Abstract:
The invention relates to a method and circuit for disconnecting a converter (U), specially during a short circuit occurring in the rectifier of a converter. In normal operational mode, the current is limited to a set value by a switching transistor (T1) of the converter. A short circuit current is detected by an evaluation unit (SUE) when a disconnection value is exceeded and the converter is deactivated.