Pulse width controlled dc-dc converter having pulse width...

H - Electricity – 02 – J

Patent

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H02J 9/00 (2006.01)

Patent

CA 2682713

A method is described wherein DC power is converted into battery charging power by means of an inductor carrying a current which is controlled by a power controller during an adjustable part of a pulse width period. The pulse width period is made adjustable in order to influence the power consumption of the controller which consumes a substantial amount of the total power consumed for controlled DC-DC conversion. Several additional features are provided to improve the efficiency and to further reduce the power consumed by both the converter and the power controller, which provides new uses for a variety of products and appliances having solar cells, such as road studs.

La présente invention concerne un procédé dans lequel une alimentation à courant continu est convertie en alimentation de charge de batterie par le biais d'un élément d'induction qui transporte un courant contrôlé par un contrôleur d'alimentation pendant la portion réglable d'une période de largeur d'impulsion. La période de largeur d'impulsion est rendue réglable afin d'influencer la consommation d'alimentation du contrôleur qui consomme une quantité substantielle de l'alimentation totale consommée pour la conversion CC-CC contrôlée. Plusieurs fonctionnalités supplémentaires sont fournies pour améliorer l'efficacité et pour réduire encore plus l'alimentation consommée par le convertisseur et par le contrôleur d'alimentation, ce qui permet de nouvelles utilisations pour tout un ensemble de produits et d'appareils électroménagers qui disposent de cellules solaires, comme par exemple, les plots routiers.

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