Power converter control for automatic maximum power point...

G - Physics – 05 – F

Patent

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G05F 1/67 (2006.01)

Patent

CA 2434405

The invention concerns a method and a circuit for maximum power point tracking of a variable power source from a comparison of an image of the power (P) supplied by the power source, the circuit comprising two elements (14, 31) providing different propagating delays to a physical quantity proportional to the power image, a comparator (16) of the outputs of the delaying elements to control a trigger (17) supplying a signal (Q) with two automatic control states to a static power converter, and means (33) for detecting a transitory operating condition from variations in oscillations of an established operating condition and means (32) for modifying the delay input by the slower delaying element (31).

L'invention concerne un procédé et un circuit de recherche du point de puissance maximale d'une source d'énergie variable à partir d'une comparaison d'une image de la puissance (P) fournie par la source d'énergie, le circuit comprenant deux éléments (14, 31) apportant des retards de propagation différents à une grandeur proportionnelle à l'image de la puissance, un comparateur (16) des sorties des éléments retardateurs pour commander une bascule (17) fournissant un signal (Q) à deux états d'asservissement d'un convertisseur de puissance statique, ainsi que des moyens (33) pour détecter un régime transitoire à partir de variations d'oscillations d'un régime établi et des moyens (32) pour modifier le retard apporté par l'élément retardateur le plus lent (31).

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