Gate pulse generator of a reactive power compensation device

H - Electricity – 03 – K

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H03K 3/352 (2006.01) H02J 3/18 (2006.01) H03K 17/0812 (2006.01) H03K 17/725 (2006.01)

Patent

CA 2040211

A gate pulse generator for a reactive power compensation device in which a capacitor is connected in series with antiparallel connected thyristors and which is so constructed that triggering pulses are produced and current is passed into said capacitor when both a signal of forward voltage imposed on said thyristors and a thyristor conduction period signal that is reset by a phase control signal are present. The gate pulse generator includes a means by which conduction period signals associated with thyristors of one polarity are reset during conduction if both a triggering pulse of thyristors of the opposite polarity and a delayed phase control signal associated with the opposite polarity thyristor is present.

L'invention est un générateur d'impulsions de déclenchement de porte pour un dispositif de correction de puissance réactive dans lequel un condensateur est connecté en série avec des thyristors en montage antiparallèle. Le générateur est construit de telle façon que les impulsions sont produites et qu'un courant est transmis au condensateur quand sont présents tous les deux un signal représentant la tension directe appliquée aux thyristors précités et un signal représentant la période de conduction des thyristors qui est réinitialisé par un signal de commande de phase. Le générateur est doté d'un dispositif qui réinitialise durant la période de conduction les signaux représentant la période de conduction associés aux thyristors d'une même polarité quand sont présents tous les deux une impulsion de déclenchement des thyristors de polarité opposée et un signal de commande de phase retardé associé aux thyristors de polarité opposée.

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