Single stage inverter device, and related controlling...

G - Physics – 05 – F

Patent

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G05F 1/67 (2006.01)

Patent

CA 2613038

The present invention concerns a single stage inverter device for power converters, comprising switching means (M1-M4) capable to periodically connect an energy source (1), in particular a photovoltaic one, to an electric network or grid (2), the switching means (M1-M4) being controlled by controlling electronic means (10, 20) operating according to a single switching cycle control of the switching means (M1-M4), the operative and circuit device parameters being such to fulfill a series of constraints simultaneously optimising both the maximum power point tracking or MPPT (Maximum Power Point Tracking) and the output power factor or PF-out (Power Factor-output) for one or more operation conditions. The present invention further concerns the related method of controlling and the related method of scaling such device.

Inverseur à étage unique pour convertisseurs de puissance, comprenant un système de commutation (M1-M4) capable d'établir une connexion périodique entre une source d'énergie (1), en particulier photovoltaïque, et un réseau électrique (2), ce système (M1-M4) étant contrôlé par un système électronique (10, 20), qui fonctionne selon un contrôle de cycle de commutation unique applicable au système de commutation (M1-M4). Les paramètres opérationnels et de circuit sont choisis pour répondre à une série de contraintes, permettant d'optimiser simultanément la recherche de point de puissance maximum et le facteur de puissance de sortie pour un ou plusieurs états de fonctionnement. On décrit aussi un procédé de contrôle connexe et un procédé d'étalonnage correspondant pour l'inverseur considéré.

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