Mixed flux motor with integrated journal and thrust bearings

An assembly comprising:

• a rotor shaft extending in an axial direction along a center axis of the assembly;
• a flange extending radially outward from the rotor shaft and circumferentially around the rotor shaft;
• an axial flux motor extending circumferentially around the rotor shaft, wherein the axial flux motor comprises:
• a first array of magnets on the flange and extending circumferentially around the rotor shaft;
• a first stator support structure extending circumferentially around the rotor shaft and facing the flange;
• an axial position sensor on the first stator support structure;
• a first plurality of coils on the first stator support structure, wherein the first plurality of coils extends circumferentially around the rotor shaft and faces the first array of magnets in the axial direction, and wherein each coil of the first plurality of coils comprises:
• first bearing windings on the first stator support structure and facing the first array of magnets in the axial direction;
• and
• first torque generating windings on the first stator support structure and facing the first array of magnets in the axial direction, wherein the first bearing windings and the first torque generating windings are electrically connected such that the first torque generating windings receive an electrical current from the first bearing windings;
• and
• a radial flux motor comprising:
• a second array of magnets on the rotor shaft;
• a second stator support structure extending circumferentially around the second array of magnets on the rotor shaft;
• a second plurality of coils on the second stator support structure and extending circumferentially around the second array of magnets and spaced radially from the second array of magnets, and wherein each coil of the second plurality of coils comprises:
• second bearing windings on the second stator support structure and spaced radially from the second array of magnets;
• and
• second torque generating windings on the second stator support structure and spaced radially from the second array of magnets, wherein the second bearing windings and the second torque generating windings are electrically connected such that the second torque generating windings receive an electrical current from the second bearing windings;
• and
• a controller, wherein the controller is in electrical communication with the axial position sensor, and wherein the controller is electrically connected to the first bearing windings such that the first bearing windings receive an electrical current from the controller, and wherein the controller is electrically connected to the second bearing windings such that the second bearing windings receive an electrical current from the controller.

A mixed flux motor comprising:

• a rotor comprising a surface extending in an axial direction relative to a center axis and in a radial direction relative to the center axis such that the surface is non-parallel with the center axis and non-perpendicular with the center axis;
• an array of magnets connected to the surface of the rotor and extending parallel to the surface of the rotor, wherein the array of magnets is arranged around the center axis;
• a stator support structure centered on the center axis and spaced from the surface of the rotor and the array of magnets;
• and
• a plurality of coils on the stator support structure, wherein the plurality of coils faces the array of magnets, and wherein each coil of the plurality of coils comprises:
• bearing windings on the stator support structure and facing the array of magnets, wherein the bearing windings are parallel to the array of magnets;
• and
• torque generating windings on the stator support structure and facing the array of magnets, wherein the torque generating windings are parallel to the array of magnets;
• wherein the rotor is an impeller and the surface of the rotor is a radially inner surface of a hub of the impeller relative to the center axis, wherein the surface of the rotor is conical and faces toward the center axis and tapers radially inward in the axial direction, the stator support structure is conical and tapers radially inward relative to the center axis in the axial direction.