An axial flux machine for a drive train of a purely electric or hybrid motor vehicle having an annular stator and two rotor elements which are mounted so as to be rotatable relative to the stator about a rotational axis. A first rotor element is arranged axially adjacent to a first end face of the stator and a second rotor element is arranged axially adjacent to a second end face of the stator. The stator has a plurality of stator cores that are distributed in a circumferential direction of a circular line extending about the axis of rotation and are designed in a wedge shape in the radial direction. At least one stator core has a plurality of radially extending sheet metal segments that are stacked on top of one another in the circumferential direction and are of plate-like design. All of the sheet metal segments (are surrounded on their two circumferential sides, that face away from one another in the circumferential direction, by a covering section made of a soft-magnetic composite material.

A rotating part that includes at least one generator unit having at least one coil, at least one permanent magnet and two pole shoes having pole surfaces facing radially outward is provided, The non-rotating part has an arc-shaped saddle adaptor of ferromagnetic material arranged with a radial distance to the pole surfaces. The saddle adaptor is configured to close a magnetic circuit passing via the pole shoes through the coil in a rotational position where the saddle adaptor overlaps with the pole shoes of the generator unit.

A rotating part that includes at least one generator unit having at least one coil, at least one permanent magnet and two pole shoes having pole surfaces facing radially outward is provided, The non-rotating part has an arc-shaped saddle adaptor of ferromagnetic material arranged with a radial distance to the pole surfaces. The saddle adaptor is configured to close a magnetic circuit passing via the pole shoes through the coil in a rotational position where the saddle adaptor overlaps with the pole shoes of the generator unit.

A gear motor for decreasing speed at a mechanical power output is provided with a housing; an electric motor including an outer stator and a rotor surrounded and driven by the outer stator; a planetary gear train including planet gear assemblies, a stationary ring gear at one end of the planet gear assemblies, and a driving ring gear at the other end of the planet gear assemblies. Each planet gear assembly includes a first gear and a second gear coaxial with and co-rotated with the first gear. The first and second gears are disposed in a carrier. The first gear meshes the stationary ring gear. The second gear meshes the driving ring gear. A driving shaft is rotatably disposed through the housing and secured to the driving ring gear as a mechanical power output.

A high voltage electric machine and power distribution system including one or more of such electric machines are provided. In one aspect, a high voltage electric machine includes a stator, a rotor, and a housing encasing at least a portion of the stator and rotor. The stator is modularized into cascaded voltage stator modules. The stator modules are galvanically isolated from one another by intermodular separators. At least one intermodular separator is positioned between each adjacent pair of stator modules. The stator modules are also galvanically isolated from the housing by a housing separator. The housing separator is positioned between the stator modules and the housing. Each stator module has an associated set of windings that are wound only within their associated stator module.

A high voltage electric machine and power distribution system including one or more of such electric machines are provided. In one aspect, a high voltage electric machine includes a stator, a rotor, and a housing encasing at least a portion of the stator and rotor. The stator is modularized into cascaded voltage stator modules. The stator modules are galvanically isolated from one another by intermodular separators. At least one intermodular separator is positioned between each adjacent pair of stator modules. The stator modules are also galvanically isolated from the housing by a housing separator. The housing separator is positioned between the stator modules and the housing. Each stator module has an associated set of windings that are wound only within their associated stator module.

An electric motor may comprise a rotor and a stator comprising rotor and stator teeth, respectively. A non-uniform angular spacing or grouping of rotor teeth may facilitate desired rotational speeds of the rotor.

An electric motor may comprise a rotor and a stator comprising rotor and stator teeth, respectively. A non-uniform angular spacing or grouping of rotor teeth may facilitate desired rotational speeds of the rotor.

A stator assembly includes a stator core defined by an inner periphery and an outer periphery, and a plurality of coils. The stator core includes a stator yoke. Each coil of the plurality of coils includes a first set of segments and a second set of segments each extending between the inner periphery and the outer periphery of the stator core. The first set of segments is arranged to form a first coil portion having a “V” shape and the second set of segments is arranged to form a second coil portion having a “V” shape. The first coil portion and the second coil portion each have a vertex and two ends. The ends of the first coil portion are coupled to the ends of the second coil portion. Other example stators, and example dynamoelectric machines and compressors including one or more stators are also disclosed.

A stator includes a stator core having a plurality of slots opening toward an inner surface and a plurality of teeth formed between the slots adjacent to each other; and flat angle coils wound around the teeth respectively. Each of the teeth includes a widened portion having a width in a circumferential direction of the inner surface, closer to the inner surface and the widened portion becomes wider, in a cross-sectional view taken along a cross section perpendicular to a rotational axis of a rotor surrounded by the stator core.