A stator for a compressor motor may include a stator body having a hollow therein, a plurality of coil winding portions that protrudes inward from an inner circumferential surface of the stator body and spaced apart from each other, a coil wound around each of the plurality of coil winding portions, and an insulation portion that extends in an axial direction of the stator body, disposed between a first coil winding portion and a second coil winding portion of the plurality of coil winding portions, and coupled to the inner circumferential surface of the stator body to surround a portion of the coil. The insulation portion may be made of polyether ether ketone, which is a plastic-based material, or one of polyurethane rubber or silicone rubber, which are rubber-based materials.

A termination unit for a deposition system, comprising a device for effecting a function, the device comprising at least one component comprising electrical steel, and at least one shielding element which is electrically conductive. The shielding element is configured so: an effect of a neighboring current on the component comprising electrical steel, which is not contributing to the function of the device, is mitigated, wherein this neighboring current has a first topology; and so an effect of at least one neighboring current having a different topology than the first topology is not significantly mitigated. The device moreover comprises a current transfer means neighboring the at least one component comprising electrical steel, and adapted for guiding a current according to the first topology and for transferring power to a target when mounted on the termination unit.

An electrical machine including a rotor and a stator, at least one of the rotor and stator being provided with superconducting first electrical windings; and a set of one or more screen electrical windings, provided in the form of one or more further superconducting electrical windings, arranged around and radially outward of the first electrical windings; wherein the set of screen electrical windings is arranged to be supplied with an electrical current for generating a magnetic field of suitable magnitude and phase to reduce the magnitude of the magnetic field, generated at least by the first electrical windings during operation of the electrical machine, radially outwards of the screen electrical windings.

A device (1) to reduce harmful bearing voltages in an electrical machine (M) fed by a DC link voltage of a DC link. The electrical machine has a rotor (2) and a stator (3) with windings (W), and is insulated to ground. At least two bearings (4), with an outer bearing ring (4a) and an inner bearing ring (4i), are between the rotor (2) and the stator (3). A shielding arrangement (S) is between the windings (W) of the stator (2) and the respective outer bearing rings (4a). A stator electrical connecting arrangement (5) is connected to a potential that is stable with respect to the DC link.

An electrical machine (20) has a stator (22) comprising: a core (50) having a first end (52) and a second end (54); one or more windings carried by the core and having: one or more first portions (62) protruding from the first end; and one or more second portions (64) protruding from the second end. A rotor (24) is mounted for rotation relative to the stator about an axis (500, 502). One or more chambers (70, 72) surround the one or more first portions and the one or more second portions. Ferromagnetic particles are in a fluid in the one or more chambers. The machine has means (80, 82, 104, 106) for varying a concentration of the ferromagnetic particles in the one or more chambers.

An electric drive for a motor vehicle, in particular a fan drive, comprising an electric motor that includes a rotor which is mounted on a motor shaft so as to be able to rotate about a stationary stator as well as a driving part which is coupled to the rotor, and at least one electroconductive cover part for influencing and/or blocking interfering electromagnetic fields generated during operation of the electric motor.

A segmented secondary part of a linear motor includes at least two segments, each having a plurality of magnets attached to a yoke plate, having alternating polarity, and having a direction of magnetization perpendicular to the yoke plate. The yoke plates include an overlapping region, in which the yoke plates of adjacent segments are superposed in the direction of magnetization but do not touch each other in the overlapping region.

A manufacturing method for a motor core includes a preparing step, a coating step, a stacking step, and a forming step. In the preparing step, the silicon steel sheets are cleaned and dried. In the coating step, an electrically insulating colloid is coated between each pair of adjacent silicon steel sheets. In the stacking step, the silicon steel sheets on which the electrically insulating colloid is applied are stacked on each other to form a layered structure. In the forming step, the stacked silicon steel sheets are subjected to a colloid curing process so that the electrically insulating colloid forms a thermosetting plastic. This reduces the chance of forming eddy currents, reducing the eddy current loss of the motor core during operation.

A screening system for a magnetic rotary-encoder sensor system in an environment of a machine including a magnetic noise field, wherein the rotary-encoder sensor system comprises a magnetic sensor, a pole wheel, and preferably a pole-wheel carrier, wherein the pole wheel comprises in a circumferential direction a plurality of permanent magnets of alternating magnetic polarity generating a useful field, wherein the pole-wheel carrier is configured to be mounted in a rotationally-fixed manner to a rotating machine shaft extending axially, rotational speed and/or angular position of which is to be determined by means of the rotary-encoder sensor system, wherein the magnetic sensor is positioned, in a mounted state of the rotary-encoder sensor system relative to the machine shaft, in a rotational plane of the pole wheel, which can affect the noise field, and directly opposite to the pole wheel, wherein the screening system comprises at least one magnetically conducting, preferably machine-fixed, deflection element being formed and dimensioned such that in the mounted state a measuring volume, which is substantially free of the noise field, is established, to which the magnetic sensor, and such ones of the permanent magnets are at least adjacent which are required for generating an evaluable useful field, when the noise field is active.

The invention relates to a housing for an electric machine and a method for producing a housing for an electric machine from at least two shell portions which cover at least a portion of the periphery. At least one of the shell portions is produced from a metal sheet by means of at least one shaping operation and the metal sheet is at least partially provided with a plastics material layer prior to the shaping operation.