Stator used in an electrical motor or generator with low loss magnetic material and method of manufacturing a stator
AssigneeRADAM Motors, LLC
InventorsMark W. McPherson, Andrew D. Hirzel
Life of this patent
Estimating the term…
Abstract
A stator for an electrical motor or generator and method for manufacturing such stator includes providing a plurality of teeth and joining the teeth with a yoke. An electrically conductive winding is applied around each of the teeth. The teeth and/or yoke may be made from a stack of low-loss magnetic material sheets. The teeth and/or yoke may be made by folding a stack of magnetic material sheets.
Claims31
(canceled)
The stator as claimed in claim 9 wherein at least one chosen from said teeth and said yoke comprises at least one folded stack of low-loss magnetic material sheets.
(canceled)
The stator as claimed in claim 29 wherein said magnetic material sheets comprise a silicon content of at least approximately 6.0%.
The stator as claimed in claim 29 wherein said magnetic material sheets comprise at least one chosen from an amorphous metal, a nanocrystalline metal and an optimized Si—Fe alloy.
The stator as claimed in claim 29 wherein said magnetic material sheets have a thickness that is less than or equal to approximately 100 micrometers.
The stator as claimed in claim 29 wherein said magnetic material sheets are non-insulated from each other.
The stator as claimed in claim 29 wherein said magnetic material sheets are held together without substantial adhesive.
(canceled)
(canceled)
The stator as claimed in claim 29 wherein said folded stack of low-loss magnetic material sheets defines a bight in said magnetic material sheets.
The stator as claimed in claim 29 wherein said yoke is made from a soft magnetic material that is different from the material comprising said low-loss magnetic material sheets.
The stator as claimed in claim 29 wherein said yoke is joined to said teeth after said winding is formed around each of said teeth.
The stator as claimed in claim 29 including a bobbin around each of said teeth and a wire coil wound around said bobbin.
The stator as claimed in claim 29 in combination with a rotor thereby defining an electrical motor or an electrical generator.
A stator for an electrical motor or generator, said stator comprising:
- a plurality of teeth;
- a yoke joining said teeth;
- and
- an electrically conductive winding around each of said teeth;
- wherein at least one chosen from said teeth and said yoke comprises at least one folded stack of magnetic material sheets, wherein the folded stack of magnetic material sheets is flattened thereby providing mechanical bonding between the sheets tending to hold the sheets together.
30-61. (canceled)
A method of making a stator for an electrical motor or generator, said method comprising:
- forming a plurality of teeth;
- forming a yoke and joining said teeth to said yoke;
- and
- juxtaposing an electrically conductive winding around each of said teeth;
- including forming at least one chosen from said teeth and said yoke by folding at least one stack of magnetic material sheets to form a folded stack of magnetic material sheets and including flattening the folded stack of magnetic material sheets thereby providing mechanical bonding between the sheets tending to hold the sheets together.
Dependencies are inferred from the claim text.