Methods, systems, and devices are disclosed for wind power generation. In one aspect, a wind power generator includes a support base; inductors positioned over the support base in a circular array; an annulus ring track fixed to the base support and providing a circular track around which the inductors are located; an annulus ring rotor placed on the annulus ring track and engaged to rollers in the circular track so that the annulus ring rotor can rotate relative to the an annulus ring track, in which the annulus ring rotor include separate magnets to move through the circular array of inductors to cause generation of electric currents; and a wind rotor assembly coupled to the annulus ring rotor and including wind-deflecting blades that rotate with the rotor and a hollow central interior for containing a wind vortex formed from deflecting wind by the blades to convert into the electric energy.

A brushless motor has a rotor assembly including a shaft, an impeller, a bearing assembly and a rotor core. The brushless motor has a stator assembly and a frame having an outer portion and an inner portion radially inward of the outer portion. The inner portion supports at least one of the rotor assembly and the stator assembly. The brushless motor has a strut extending between the outer portion and the inner portion. The strut extends at least partially into a recess formed in the stator assembly.

Geared motor including a brushless electric motor, a planetary reduction gear and an output shaft with a longitudinal axis, fixed in rotation to the planetary reduction gear, the electric motor including a stator, a rotor housed in a housing in the stator and surrounded by a lateral surface of the housing, at least two coils attached to the stator and facing a portion of an outer lateral surface of the rotor. The stator and the rotor define at least one first zone with a first air gap and one second zone with a second air gap between them, the first air gap being less than the second air gap, the first zone including the coils, such that the attraction force exerted by the stator on the rotor is lower in the second zone than in the first zone.

An electric motor comprising: a frame; and a stator assembly; the stator assembly including a bobbin assembly and at least one c-shaped stator core. The frame comprises at least one lug, the bobbin assembly includes at least one recess, and the stator assembly is fixed to the frame by fixing the lug inside the recess of the bobbin assembly.

A resistance adjustment system for adjusting a resisting force to a flywheel of a stationary exercise equipment is provided, including a resistance control circuit, a manual adjustment member, a power unit, a transmission assembly, and a resistance device. The power unit is in electrical connection with the resistance control circuit, wherein, in response to receipt of a resistance adjustment signal from the manual adjustment member, the resistance control circuit generates a driving signal to drive the power unit. The power unit then moves the resistance device via a transmission assembly to cause a change of the resisting force to the flywheel.

An electromechanical system comprising: a rotor comprising a plurality of teeth spaced about a circumference of the rotor, wherein the teeth of the rotor are equally spaced about the rotor according to a tooth spacing angle, and are skewed in an axial direction such that the circumferential positions of the teeth of the rotor vary along the axial length of the rotor, and first and second stator segments, each extending partway about the rotor and comprising a field winding and poles arranged to magnetically interact with the teeth of the rotor such that an alternating current (AC) back-emf is induced in the field winding upon rotation of the rotor. The poles of the first stator segment are angularly displaced about the rotor from the poles of the second stator segment such that the back-emf induced in the field winding of the first stator segment is phase shifted with respect to the back-emf induced in the field winding of the second stator segment.

Methods, systems, and devices are disclosed for wind power generation. In one aspect, a wind power generator includes a support base; inductors positioned over the support base in a circular array; an annulus ring track fixed to the base support and providing a circular track around which the inductors are located; an annulus ring rotor placed on the annulus ring track and engaged to rollers in the circular track so that the annulus ring rotor can rotate relative to the an annulus ring track, in which the annulus ring rotor include separate magnets to move through the circular array of inductors to cause generation of electric currents; and a wind rotor assembly coupled to the annulus ring rotor and including wind-deflecting blades that rotate with the rotor and a hollow central interior for containing a wind vortex formed from deflecting wind by the blades to convert into the electric energy.

Homopolar linear synchronous machines are provided herein that include a mover device. The mover device includes a cold plate with ferromagnetic cores extending through slots in the cold plate. Layers of armature coils are located around the ferromagnetic cores on opposite sides of the cold plate. The mover device further includes at least one field coil.

A moving member of a machine can include a cold plate that serves as a primary structural member for the moving member. The cold plate can have one or more cooling channels formed within the cold plate. A plurality of armature windings can be fixed to the cold plate. One or more field windings can be fixed to the cold plate. A plurality of ferromagnetic cores can be fixed to the cold plate, each ferromagnetic core positioned within a loop of at least one of the plurality of armature windings. Other embodiments are described.

The present disclosure relates to an axial flux motor comprising a stator assembly and a rotor assembly. The axial flux motor includes stator cores having enlarged end plates. The axial flux motor also includes a cooling jacket including fins that extend between electromagnets of the stator assembly. The axial flux motor rotor assembly also includes an air cooling arrangement to provide air cooling to the stator assembly.