Energy supply unit for transmitting auxiliary energy to an...

H - Electricity – 02 – M

Patent

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Details

H02M 3/28 (2006.01) H01F 27/28 (2006.01) H02J 5/00 (2006.01) H02J 17/00 (2006.01) H05K 1/16 (2006.01)

Patent

CA 2419075

The invention relates to an energy supply unit for transmitting auxiliary energy to an electrical device, especially a control circuit in a medium or high voltage installation. Said energy supply unit comprises a primary coil which is at least indirectly connected to an energy source; a secondary coil which is at least indirectly connected to the control circuit; and an insulating section formed between the primary coil and the secondary coil. The auxiliary energy is transmitted via said insulating section by means of a magnetic alternating field. The aim of the invention is to produce an energy supply unit having a simple and cost-effective structure and producing low leakage inductance and high coupling inductance. In order to achieve this, the energy supply unit comprises a first carrier plate; a primary coil embodied as a flat coil situated on the first carrier plate; a second carrier plate; and a secondary coil embodied as a flat coil situated on the second carrier plate. The insulating section is embodied as an interferric space formed between the primary coil and the secondary coil.

L'invention concerne une unité d'alimentation d'énergie (1) destinée à transmettre une énergie auxiliaire à un dispositif électrique, en particulier à un circuit de commande (2) dans un dispositif moyenne ou haute tension. Ladite unité d'alimentation d'énergie (1) est composée d'une bobine primaire (5) reliée au moins indirectement à une source d'énergie (7), d'une bobine secondaire (9) reliée au moins indirectement au circuit de commande (2), et d'une voie d'isolation formée entre la bobine primaire (5) et la bobine secondaire (9), la transmission de l'énergie auxiliaire étant effectuée au moyen de cette voie d'isolation par l'intermédiaire d'un champ magnétique alternatif. L'invention vise à mettre en oeuvre une unité d'alimentation d'énergie (1) de construction simple et économique, produisant une faible induction de fuite et une induction de couplage importante. A cet effet, l'unité d'alimentation d'énergie selon l'invention (1) est pourvue d'une première plaque support (4), d'une bobine primaire (5) conçue en tant que bobine plate logée sur la première plaque support (4), d'une deuxième plaque support (8), et d'une bobine secondaire (9) conçue en tant que bobine plate logée sur la deuxième plaque support (8), la voie d'isolation étant conçue en tant qu'entrefer (11) entre la bobine primaire (5) et la bobine secondaire (9).

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