A lubricant supported electric motor includes a stator presenting an outer raceway and a rotor extending along an axis and rotatably disposed within the stator. The rotor presents an inner raceway disposed in spaced relationship with the outer raceway to define a gap therebetween, and a lubricant is disposed in the gap for supporting the rotor within the stator. At least one of the outer raceway or the inner raceway is movable radially towards or away from the other to adjust the gap and optimize operation of the lubricant supported electric motor.

An EMI attenuation device includes a housing stator, a fan rotor, and an electrical bridge therebetween. The housing stator has an aperture therethrough, and at least a portion of the housing stator is electrically conductive. The fan rotor is adjacent to the aperture and has a rotational axis relative to the housing stator and a proximate surface proximate the housing stator. The fan rotor is electrically conductive, and the proximate surface is continuous around a rotational direction of the fan rotor. The electrical bridge is between the proximate surface of the fan rotor and a contact surface of the housing stator.

The present invention relates to rotary devices, such as an electric motors and power generators, having dual and multiple air gaps. Disclosed is a rotary device characterized by comprising a rotor part, a stator part, an inner support part, and a housing part. The inner support part is coupled and fixed to the housing part. The stator part includes: an inner stator part which includes an inner iron core coupled and fixed to the inner support part, and an inner wire wound on the inner iron core; and an outer stator part which includes an outer iron core coupled and fixed to the inner circumferential surface of the housing part, and an outer wire wound on the outer iron core. The rotor part includes: a rotor-side magnetic force application part which has, on the inner circumferential side, the inner stator part and an inner air gap, and has, on the outer circumferential side, the outer stator part and an outer air gap; and a pair of end support parts installed at respective ends of the rotor-side magnetic force application part. At least one among the pair of end support parts is coupled and fixed to a rotary shaft which is rotatably installed in the housing part.

An electric motor, at least having a stator and an annular rotor which are arranged next to one another along an axial direction; wherein the stator has a plurality of stator teeth which are arranged next to one another along a circumferential direction and which each extend along the axial direction. At least one coil has at least one turn is arranged on each stator tooth, wherein the at least one turn is electrically conductively connected to a printed circuit board. The printed circuit board is arranged on an end side of the stator and next to the stator along the axial direction. The printed circuit board comprises a plurality of electrical connecting lines via which the at least one turn of each coil is connected at least to other turns or to an electrical connection of the motor.

An axial flux electric can include a motor assembly including a motor shaft, a stator assembly, and a rotor assembly. The stator assembly can include a plurality of stator cores about which a wire coil is wound, wherein one or more of the stator cores includes a stator body with an internal fluid passageway for receiving a cooling fluid.

A dynamoelectric rotary machine includes a stator, which has a winding system arranged in grooves disposed between teeth of a magnetically conductive body and a winding head on the end faces of the stator in each case. A rotor with a cage ring is arranged rotatably about an axis and during operation of the dynamoelectric rotary machine is in electromagnetic interaction in a motor-driven or generator-driven manner with the winding system of the stator arranged in the grooves by way of an air gap. Comb-type elements are disposed on the end faces of the stator. The comb-type elements assume an extensive intermediate space between the winding system projecting from the end faces of the stator, so that tonal noises which are produced during operation of such an electric machine are at least reduced.

Disclosed is a device with a stator and a rotor, the device comprising: a stator; a rotor, wherein an air gap is provided between the rotor and the stator, and an air gap protection device fixedly connected to the stator, wherein the radial distance between the air gap protection device and the rotor is less than the radial distance between thy stator and the rotor, and the air gap protection device rotates relative to the rotor when in contact with the rotor. By arranging the air gap protection device fixedly connected to the stator, the air gap protection device can rotate relative to the rotor when in contact with the rotor, and the radial distance between the air gap protection device and the rotor is less than the radial distance between the stator and the rotor.

A multi-pole rotor of a variable-flux memory motor (VFMM) includes: a plurality of poles. Each pole includes: a curved soft magnet, wherein an outer periphery of the curved soft magnet is toward the rotational axis of the rotor; a first non-magnetic and non-conductive material disposed on the outer periphery of the curved soft magnet; and a second non-magnetic and non-conductive material disposed on an inner periphery of the curved soft magnet.

A number of illustrative variations may include a rotor core for an electric motor comprising permanent magnets wherein the rotor core comprises lobes of the core material that magnets may be attached to.

A generator for a wind turbine has a rotor and a stator separated radially by an air gap, wherein the stator includes at least one stator segment, which includes a stack of lamination sheets and at least one stator winding, and a stator support structure supporting the at least one stator segment, wherein the generator further includes a cooling arrangement for providing cooling fluid at least to the air gap, wherein the cooling arrangement further includes a cooling fluid flow dividing element for dividing an incoming cooling fluid flow to the stator into a first partial cooling fluid flow directed to the air gap and a second partial cooling fluid flow directed to the stator support structure.