Title:
CIRCUIT APPARATUS FOR CURRENT SHARE MONITORING OF CONVERTING VALVE
Document Type and Number:
Japanese Patent JPS54122847
Kind Code:
A
Abstract:
A circuit arrangement for monitoring the current inbalance in two parallel-connected converter branches, each of which includes at least two series-connected converter valves. The anodes and cathodes, respectively, of adjacent converter valves in a given branch are connected together via cross-connections containing current transformers. A differential current transformer is provided at the output junction point of the two converter branches. Starting with the output signal of the differential current transformer, the exact current misdistribution for each adjacent converter valve pair is determined via summing amplifiers by adding the currents of the transverse transformers. A protective measure is triggered if a current misdistribution occurs.
Inventors:
AHIMU KURAUSU
HAINRITSUHI GAISHINGU
UIRII URUBURITSUHI
HAINRITSUHI GAISHINGU
UIRII URUBURITSUHI
Application Number:
JP1898079A
Publication Date:
September 22, 1979
Filing Date:
February 20, 1979
Export Citation:
Assignee:
SIEMENS AG
International Classes:
H02H7/10; G01R19/10; H02H3/36; H02H7/12; (IPC1-7): H02H3/28