Apparatus and method for regulating a power line using...

H - Electricity – 02 – J

Patent

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H02J 3/18 (2006.01)

Patent

CA 2193862

A frequency domain self-synchronization controller (24) for solid state switches (21) is disclosed. The controller (24) analyzes a measured power signal in the frequency domain to identify a frequency domain firing angle and then converts the frequency domain firing angle to a time-domain firing signal command. The time-domain firing signal command is used to fire selected solid state switches (21) of, for example, a static VAR compensator, precisely when the voltage across the selected solid state switches (21) is at or near zero volts, so that the solid stare switches (21) are not damaged.

L'invention se rapporte à une unité de commande (24) à synchronisation automatique dans le domaine fréquentiel pour des interrupteurs à semi-conducteurs (21). L'unité de commande (24) analyse un signal de puissance mesuré dans le domaine fréquentiel afin d'identifier un angle d'amorçage dans le domaine fréquentiel et de convertir ce dernier en une commande de signal d'amorçage dans le domaine temporel. La commande de signal d'amorçage dans le domaine temporel est utilisée pour amorcer les interrupteurs à semi-conducteurs (21) sélectionnés d'un survolteur-dévolteur statique, par exemple, précisément lorsque la tension dans les interrupteurs à semi-conducteurs (21) sélectionnés est à zéro ou approche du zéro, de sorte que ceux-ci ne soient pas endommagés.

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