Process and device for a control switch in a variable...

Details Process and device for a control switch in a variable... Process and device for a control switch in a variable...

H - Electricity

02

M

H02M 7/5387 (2007.01) G05B 11/30 (2006.01)

Patent

CA 2295846

The invention concerns a method, and a corresponding device, for controlling at least a power switch in a system with variable structure comprising at least a switch capable of being actuated to deliver a given electric signal corresponding to an electric system, based on a control signal taking into account a reference input signal and a feedback signal sampled at said electric system output. The method consists in applying to said control signal an oscillation at a controllable frequency, resulting from the application of a filtering on said feedback signal, said filtering being defined in such a way as to induce a phase shift of -180 DEG between the filtered feedback signal and said electric system input signal, to said controllable frequency.

L'invention concerne un procédé, et un dispositif correspondant, de commande d'au moins un commutateur de puissance dans un système de commande à structure variable, système du type comprenant au moins un commutateur actionnable pour délivrer un signal électrique donné correspondant à un système électrique, en fonction d'un signal de commande tenant compte d'un signal d'entrée de référence et d'un signal rebouclé prélevé en sortie dudit système électrique, procédé selon lequel on applique audit signal de commande une oscillation à une fréquence contrôlable, obtenue par l'application d'un filtrage sur ledit signal rebouclé, ledit filtrage étant défini de façon à induire un déphasage de -180° entre le signal rebouclé et filtré d'une part, et le signal d'entrée dudit système électrique d'autre part, à ladite fréquence contrôlable.

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