An axial flux-type rotary electric machine includes a rotor having a rotor axis and a stator having a stator axis. The stator is positioned adjacent to the rotor such that an axial airgap is defined between the rotor and the stator. First and second non-parallel rotor shafts are respectively collinear with the stator axis and the rotor axis. A nutating gear pair is connected to a stationary member and the rotor, and is configured to impart nutating motion to the rotor with respect to the stator, such that a size of the axial airgap changes with a rotational position of the rotor, and such that the rotor has two degrees of freedom of motion. An electrical system includes direct and alternating current voltage buses, a power inverter module connected to the voltage buses, and the axial flux-type rotary electric machine connected to the alternating current voltage bus.

A multi degree-of-freedom electromagnetic machine includes an outer case, an inner case, a stator, stator windings, a voice coil winding, a tilt magnet, a rotor, and rotor magnets. The inner case is disposed within an inner cavity of the outer case and is mounted to rotate relative to the outer case about one or more rotational axes. The stator is fixedly mounted within the inner case, and the stator windings are wound thereon. The voice coil winding is fixedly coupled to either the inner surface of the outer case or the outer surface of the inner case. The tilt magnet is fixedly coupled to either the outer surface of the inner case or the inner surface of the outer case. The rotor is rotationally mounted within the inner case and is operable to rotate, relative to the stator, about a rotational axis.

A rotary electric machine, e.g., a cycloidal reluctance motor, includes a stator having stator teeth connected to a cylindrical stator core, and a rotor having a cylindrical rotor core. The stator core and/or rotor core are constructed of grain-oriented, spirally-wound ferrous material having a circular or annular grain orientation. The stator teeth may be constructed of grain-oriented steel having a linear grain orientation. Notches may be spaced around an inner circumferential surface of the stator core, with each stator tooth engaged with a respective notch. The rotor may be eccentrically positioned radially within the stator. The rotor core may define notches spaced around its outer circumferential surface, with salient rotor projections engaged with a respective rotor notch. The machine in such an embodiment may be a switched reluctance rotor. An electrical system using the machine and a method of manufacturing the machine are also disclosed.

The torque augmentation device has two primary embodiments. The first embodiment is two rotors, the rotors including rings of permanent magnets. The two rotors are angled with respect to each other. The magnetic field is disrupted on the bottom half by a ferrous flux diversion plate. With the forces unbalanced between the upper and lower halves of the rotors, rotation will result, thus augmenting the torque production of any associated rotational device. The second embodiment uses a straight shaft, with a single central rotor, both sides of the rotor covered in magnets. In place of adjacent rotors, the second half of the magnets is placed on fixed plates, one on each side of the central rotor. The fixed plates are set at an angle with respect to the central rotor, creating the unbalanced forces that cause rotation.

The torque augmentation device has two primary embodiments. The first embodiment is two rotors, the rotors including rings of permanent magnets. The two rotors are angled with respect to each other. The magnetic field is disrupted on the bottom half by a ferrous flux diversion plate. With the forces unbalanced between the upper and lower halves of the rotors, rotation will result, thus augmenting the torque production of any associated rotational device. The second embodiment uses a straight shaft, with a single central rotor, both sides of the rotor covered in magnets. In place of adjacent rotors, the second half of the magnets is placed on fixed plates, one on each side of the central rotor. The fixed plates are set at an angle with respect to the central rotor, creating the unbalanced forces that cause rotation.

A geared spherical electromagnetic machine with two-axis rotation includes an inner frame, an outer frame, a spherical body, a first coil, a second coil, a third coil, a first hemispherical body, a second hemispherical body, a first plurality of inner magnets, a second plurality of inner magnets, a first gearbox, and a second gearbox.

A motor comprising a stator and a rotor; the stator includes a first stator, a second stator, and a third stator; the stators each include at least one stator coil; the rotor includes a magnetic element, a first bearing, a second bearing, and a shaft; the stators generating a superimposed magnetic field together causes the magnetic element to rotate; when the magnetic element rotates in the first plane, the outer ring of the first bearing rotates; the center of the first bearing is located in a plane where the second bearing is located, and when the magnetic element rotates in the second plane, the inner ring of the second bearing rotates; the central axis of the shaft passes through the center of the first bearing; wherein the shaft is rotatably fixed to the first bearing and connected to the second bearing; the magnetic element located in where the central axis of the first bearing meets the central axis of the second bearing, the normal vector of the first plane is parallel to the axial direction of the shaft; the normal vector of the second plane is perpendicular to the axial direction of the shaft.

An electrical system includes a cycloidal electric machine having a stator and a balanced rotor. The rotor is eccentrically positioned radially within the stator, such that the rotor moves with two degrees of freedom (2DOF). The 2DOF motion includes rotating motion about the rotor axis and orbiting motion about the stator axis. A rotor constraint mechanism constrains the motion of the rotor, such that the rotor is able to generate torque on a coupled load. Part of the rotor constraint mechanism may be integrally formed with the rotor. A coupling mechanism may be coupled to the rotor and configured to translate the 2DOF into 1DOF, i.e., rotation without orbital motion. The rotor may include mutually-coupled rotors. At least one counterweight may be connected to the rotor, e.g., externally or within the airgap. Balancing of the balanced rotor may be optionally provided via the multiple rotors and/or the counterweight(s).

A multi-degree of freedom electromagnetic machine includes a spherical body, an outer structure, a plurality of magnets, and a plurality of windings. Each of the plurality of windings includes a flexible dielectric substrate and an electrical conductor. The flexible dielectric substrate has an inner surface and an outer surface, and the inner surface of the flexible substrate facies the outer surface of the spherical body. The electrical conductor is disposed on at least one of the inner or outer surfaces of the flexible dielectric substrate.

A multi-degree of freedom electromagnetic machine includes a spherical body, an outer structure, a plurality of magnets, and a plurality of windings. Each of the plurality of windings includes a flexible dielectric substrate and an electrical conductor. The flexible dielectric substrate has an inner surface and an outer surface, and the inner surface of the flexible substrate facies the outer surface of the spherical body. The electrical conductor is disposed on at least one of the inner or outer surfaces of the flexible dielectric substrate.