Electromagnetic actuator with variable reluctance

Details Electromagnetic actuator with variable reluctance Electromagnetic actuator with variable reluctance

H - Electricity

02

K

H02K 33/04 (2006.01) H01F 7/16 (2006.01)

Patent

CA 2687070

The invention relates to an electromagnetic actuator with variable reluctance comprising a fixed ferromagnetic armature (3) comprising at least two concentric cylinders of revolution linked by a ring nut, at least one magnetizing winding (2) arranged between said cylinders, a ferromagnetic moving armature (4) guided in reciprocating translation movements relative to said fixed armature (3), with which it defines a magnetic circuit with an air gap (20), the dimension of which varies during reciprocating translation movements of the moving armature (4), characterized in that said fixed armature (3) comprises at least two series of slots, a first series of slots provided radially in said outer cylinder and extending over the entire height of said outer cylinder, and a second series of slots provided radially in said outer and inner cylinders and extending only over a major part of the height of said cylinders.

L'invention concerne un actionneur électromagnétique à reluctance variable comprenant une armature (3) ferromagnétique fixe comprenant au moins deux cylindres de révolution concentriques reliés par une couronne de liaison, au moins un bobinage (2) d'aimantation agencé entre lesdits cylindres, une armature (4) mobile ferromagnétique guidée en translations alternatives par rapport à ladite armature (3) fixe, avec laquelle elle définit un circuit magnétique avec un entrefer (20) dont la dimension varie au cours des translations alternatives de l'armature (4) mobile, caractérisé en ce que ladite armature (3) fixe comprend au moins deux séries de fentes, une première série de fentes ménagées radialement dans dudit cylindre extérieur et s'étendant sur toute la hauteur dudit cylindre extérieur, et une deuxième série de fentes ménagées radialement dans lesdits cylindres extérieur et intérieur et s'étendant uniquement sur une majeure partie de la hauteur desdits cylindres.

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