Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1990-11-27
1991-10-15
Wong, Peter S.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 96, 363137, 361 79, H02H 7122
Patent
active
050579878
ABSTRACT:
In an electric power converter comprising at least one pair of serially-connected, alternately conducting controllable electric valves spanning a pair of d-c conductors, the conducting state of each valve is detected by comparing the actual magnitude of valve current with a predetermined low threshold level and by comparing the difference between the juncture potential of the two valves and a reference potential of one of the d-c conductors with the potential diffence between both d-c conductors. If both comparisons indicate the valve is in a conducting state and if this state is indicted concurrently for both valves, logic means is operative to indicate that a "shoot through" fault has occurred. In this abnormal event, whatever turn on and turn off signals for the two valves were extant at the time such operation of the logic means commenced will be prevented from changing while both valves are conducting.
REFERENCES:
patent: 4641231 (1987-02-01), Walker et al.
patent: 4672525 (1987-06-01), Horie et al.
patent: 4723188 (1988-02-01), McMurray
Kumar Ajith K.
Stitt Thomas D.
General Electric Company
Payne R. Thomas
Wong Peter S.
LandOfFree
Fault detection and protection strategy for a pair of complement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fault detection and protection strategy for a pair of complement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fault detection and protection strategy for a pair of complement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-995282