Fin-cooled axial flux rotating electrical machine, and applications thereof
AssigneeMaxwell Motors, Inc.
InventorsMichael Paritee, Maksym Pryimak
Life of this patent
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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.
Claims16
An axial flux induction rotating electrical machine, the machine comprising:
- a stator that comprises a plurality of stator coils connected by at least one connection bar;
- a rotor separated from the stator by an air gap, and configured to transmit or receive electromagnetic flux to or from the stator;
- and
- a cooling fin assembly attached, using an interference fit, to a circumference of the rotor to circulate air through an endbell affixed to the stator and dissipate heat from the machine when the rotor rotates, the cooling fin assembly comprising a plurality of fins, each fin extending in a radial direction of the rotating electrical machine and widening as the fin extends in the radial direction to at least partially enclose the plurality of stator coils and the at least one connection bar.
A cooling fin apparatus for an axial flux induction rotating electrical machine, the apparatus comprising:
- a band configured to surround and to fit, using an interference fit, a circumference of a rotor of the induction rotating electrical machine;
- and
- a plurality of fins affixed to the band and each extending in a radial direction of the rotating electrical machine such that the plurality of fins are configured to circulate air through an endbell affixed to a stator to dissipate heat from the machine when the rotor rotates, widening as the fin extends in the radial direction to at least partially enclose a plurality of stator coils of the stator of the machine.
Dependencies are inferred from the claim text.