Converter and a method for controlling a converter

Details Converter and a method for controlling a converter Converter and a method for controlling a converter

2006-02-07

2006-02-07

Han, Jessica (Department: 2838)

Electric power conversion systems

Current conversion

Including automatic or integral protection means

C363S056030

Reexamination Certificate

active

06995994

ABSTRACT:
The invention relates to a converter provided with a resonant circuit (16), which converter comprises a device (31) for measuring the derivative (dI/dt) of the current through the current valves82, 3) and a detection device (32) co-operating with said measuring device (31) for detecting a short-circuit in the converter, the detection device (32) being adapted to detect a short-circuit current when the current derivative (dI/dt) measured by the measuring device (31) is equal to or exceeds a stipulated current derivative limit value (dI/dtlim) during a length of time exceeding a stipulated time limit value (tlim). The invention also relates to a method for controlling such a converter.

REFERENCES:
patent: 6172882 (2001-01-01), Tanaka et al.
patent: 6603675 (2003-08-01), Norrga
patent: 6898095 (2005-05-01), Bijlenga et al.
patent: 0 712 201 (1996-05-01), None
patent: 1 465 757 (1977-03-01), None

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