Soft magnetic core with position-dependent permeability
AssigneeVacuumschmelze GmbH & Co. KG
InventorsJivan KAPOOR, Christian POLAK
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Abstract
A soft magnetic core is provided, in which permeabilities that occur at least two different locations of the core are different. A method for producing a soft magnetic core that has different permeabilities at at least two different locations is also provided.
Claims26
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A method for producing a soft magnetic core with a first portion having a first magnetic permeability and a second portion having a second magnetic permeability, the first magnetic permeability being different from the second magnetic permeability, and a ratio of the first magnetic permeability to the second magnetic permeability being greater than 1:1.1, the method comprising:
- providing a magnetic tape having a length and magnetic permeability that increases over the length, and
- radially winding the soft magnetic tape to provide a core whose magnetic permeability increases outwardly in a radial direction.
A method for producing a soft magnetic core with a first portion having a first magnetic permeability and a second portion having a second magnetic permeability, the first magnetic permeability being different from the second magnetic permeability, and a ratio of the first magnetic permeability to the second magnetic permeability being greater than 1:1.1, the method comprising:
- placing core powder in a mold;
- at least one of compressing and curing, in the mold, the core powder to provide a powder core element;
- providing a magnetic tape having a length and magnetic permeability that increases over the length, and
- radially winding the soft magnetic tape over the powder core element to provide a core whose magnetic permeability increases outwardly in a radial direction.
Dependencies are inferred from the claim text.