A capacitor element, a method for manufacturing a capacitor...

H - Electricity – 01 – G

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H01G 4/32 (2006.01) H01G 4/38 (2006.01)

Patent

CA 2627041

The invention relates to a capacitor element (1) for a power capacitor. The capacitor element includes a plurality of series-connected cylindrical sub- elements (101 , 102, and 103). Each sub-element (101 , 102, and 103) include at least two strips of dielectric material wound in a number of turns. A layer of electrically conductive material is disposed between the turns of the winding. The sub-elements are disposed one outside the other as seen in a direction transversely to the plane of the strip. According to the invention, strip in the outermost sub-element (101 ) is longer than the strip in each inwardly lying sub-element (102, 103). The invention also relates to a power capacitor provided with a plurality of capacitor elements according to the invention, and a capacitor battery provided with a plurality of power capacitors according to the invention. The invention also relates to a method of manufacturing the inventive capacitor element and the use of the inventive power capacitor.

L'invention concerne un élément condensateur (1) pour condensateur de puissance. L'élément condensateur comprend plusieurs sous-éléments cylindriques (101, 102, 103) reliés en série. Chaque sous-élément (101, 102, 103) comprend au moins deux bandes de matériau diélectrique enroulées sur plusieurs spires. Une couche de matériau conducteur est disposée entre les spires du bobinage. Les sous-éléments sont disposés extérieurement les uns aux autres selon un sens transversal par rapport au plan de la bande. Selon l'invention, la bande située dans le sous-élément le plus externe (101) est plus longue que la bande située dans chaque sous-élément placé à l'intérieur (102, 103). L'invention concerne également un condensateur de puissance pourvu de plusieurs éléments condensateurs selon l'invention ainsi qu'une batterie de condensateur pourvue de plusieurs condensateurs de puissance selon l'invention. L'invention concerne également un procédé de fabrication de l'élément condensateur selon l'invention et l'utilisation du condensateur de puissance selon l'invention.

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