Magnetic circuit with wound magnetic core
AssigneeLiaisons Electroniques-Mecaniques LEM S.A.
InventorsSylvain Demolis, Pierre Mariano Benedetti, Thierry Didier Chenavard
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Abstract
Magnetic circuit comprising a gap bridging element made of a non-magnetic metal and a wound magnetic core comprising a plurality of stacked concentric ring layers of magnetic material having a high magnetic permeability. The magnetic core has a gap extending through a section of the stacked concentric ring layers of magnetic material, wherein the bridging element is welded to a lateral face of the wound magnetic core on either side of the gap. Welding connections between the bridging element and the magnetic core extend across the stacked concentric ring layers.
Claims15
A magnetic circuit comprising at least one gap bridging element made of a non-magnetic metal and a wound magnetic core comprising a plurality of stacked concentric ring layers of magnetic material having a high magnetic permeability, the magnetic core having at least one gap extending through a section of the stacked concentric ring layers of magnetic material, wherein the bridging element is welded to a lateral face of the wound magnetic core on either side of the gap, welding connections between the bridging element and the magnetic core extending across the stacked concentric ring layers.
A method of making a magnetic circuit, including the steps of:
- winding a magnetically permeable strip material to form a stacked multilayer ring core;
- welding one or more non-magnetic bridging elements to the stacked multilayer ring core wherein the bridging element is welded to one or both lateral face of the wound magnetic core on either side of the gap, welding connections between the bridging element and the magnetic core extending across the stacked concentric ring layers;
- and
- machining a gap through a section of the stacked multilayer ring core.
Dependencies are inferred from the claim text.