Rotor for an axial flux rotating electrical machine compressed with a band
AssigneeMaxxwell Motors, Inc.
InventorsMichael CUNNYNGHAM, Maksym PRYIMAK
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Abstract
Embodiments involve rotors for axial flux induction rotating electric machines that use a soft magnetic composite for the rotor core. A first embodiment is directed to a rotor for a rotating electrical machine that transmits magnetic flux parallel to a shaft of the rotor. The rotor includes a rotor winding and a plurality of cores. The rotor winding consists of a solid piece of conductive material that comprises a plurality of cavities. Each core is placed in a respective cavity and comprises a highly resistive isotropic ferromagnetic powder.
Claims20
A rotor for an axial flux rotating electrical machine, the rotor made by a process comprising:
- fabricating a cylindrical rotor winding, the cylindrical rotor winding comprising a plurality of cores, each core substantially equidistant from an axis, wherein each of the plurality of cores is comprised of a compressed ferromagnetic powder;
- fabricating a circular band sized such that the circular band applies compression to the cylindrical rotor winding when the circular band and the cylindrical rotor winding are at similar temperatures;
- applying a thermal differential between the circular band and the cylindrical rotor winding;
- when the thermal differential is applied, inserting the cylindrical rotor winding into an interior of the circular band;
- and
- allowing the thermal differential to dissipate placing the cylindrical rotor winding in compression from the circular band.
A rotor for an axial flux rotating electrical machine, the rotor made by a process comprising:
- fabricating a cylindrical rotor winding, the cylindrical rotor winding comprising a plurality of cores;
- and
- fabricating a circular band sized such that the circular band applies compression to the cylindrical rotor winding.
Dependencies are inferred from the claim text.