Accident detection circuit of a voltage-type self-excited...

G - Physics – 01 – R

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01R 31/40 (2006.01) G01R 31/42 (2006.01) H02H 7/122 (2006.01) H02M 1/00 (2006.01)

Patent

CA 2170539

The accident detection circuit of the present invention is such that in a voltage-type self-excited power converter composed of anode reactors 13 and 23 connected in series, respectively, to power semiconductor elements 11 and 21 of self turn off type connected in series, there are provided anode reactor voltage direction-detecting circuits 16 and 26 which detect, respectively, that the voltage in the direction generated in the anode reactors 13 and 23 exceeds a predetermined value when the current flowing in the direction of from the anode to the cathode of the each element 11, 21 increases, anode current direction-detecting circuits 17 and 27 which detect, respectively, that the current flows in the direction of from the anode to the cathode of the each element 11, 21, delay circuits 18 and 28 which delay, respectively, the output signal of each arm current direction-detecting circuit by a certain period of time, and AND circuits 19 and 29 which designate the output signal of the each anode reactor voltage direction-detecting circuit 16, 26 and the output signal of the each delay circuit 18, 28, respectively, as the input signal, and the output signal of each AND circuit 19, 29 is designated as the accident detection signal of the converter.

L'invention concerne un détecteur de défaillance pour un tel convertisseur de puissance auto-commuté sur une source de tension, comprenant des composants réactifs anodiques (13 et 23) respectivement connectés en série avec des éléments semi-conducteurs de puissance à auto-extinction (11 et 21). Ce détecteur de défaillance comprend des circuits (16 et 26) permettant de contrôler que les tensions au niveau des composants réactifs anodiques (13 et 23) sont supérieures à un niveau prédéterminé, lors de l'accroissement des courants électriques circulant des anodes des éléments (11 et 21) vers les cathodes; des circuits (17 et 27) pour détecter le courant de branche circulant des anodes des éléments (11 et 21) vers les cathodes; des circuits de temporisation (18 et 28) pour temporiser les signaux de sortie des circuits (17 et 27) selon des durées fixes; et des circuits ET (19 et 29) recevant respectivement les signaux de sortie des circuits (16 et 26) et des circuits (18 et 28). Les signaux de sortie des circuits (19 et 29) indiquent la présence d'une défaillance dans le convertisseur.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Accident detection circuit of a voltage-type self-excited... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Accident detection circuit of a voltage-type self-excited..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Accident detection circuit of a voltage-type self-excited... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1709310

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.