Abstract: An electric submersible pump motor can include a housing; and a hermetically sealed cavity defined at least in part by the housing that includes at least one material susceptible to hydrolysis, and a polymeric material that includes epitaxial co-crystals of perfluoroalkoxy (PFA) and polytetrafluoroethylene (PTFE). Various other apparatuses, systems, methods, etc., are also disclosed.

Abstract: An electromechanical actuator device (17) and method for use under water in petroleum activity, in which, via a transmission element (30, 34, 36), an electric motor (18), including a stator (20) and a rotor (22), is arranged to move an actuation element (36) between at least a first position and a second position, and in which the rotor (22) of the electric motor (18) surrounds and is connected to an actuator nut (30) which is in threaded engagement with the actuation element (36).

Abstract: A motor cooling and eddy current suppression structure (100), which is attached to the surface of the motor winding (201), includes a first cooling plate (101), a second cooling plate (103,104), and a cooling water circuit located between the first cooling plate and the second cooling plate. The cooling water circuit is configured to allow the cooling fluid to pass through. The first and the second cooling plates are both non-magnetic metallic materials. The first cooling plate is divided into a plurality of individual first regions (301,303) which are corresponding to each pole of the motor by one or more first slits (305) provided on the first cooling plate in the position where the motor poles are combined. Each of the first regions is further divided into an even number of first sub-areas by at least one fist sub-slit (306) where induced electromotive force is generated.

Abstract: The present invention relates to a flux-switching machine, including a stator having phase windings and field coils, wherein, in the machine, at least one field coil is arranged in a pair of notches separated by at least three teeth.

Abstract: A linear motor system includes a coil assembly and a magnet assembly disposed adjacent to the coil assembly. The coil assembly includes a plurality of coil windings and a sealing material to seal and to prevent moisture and/or chemical ingress into the coil windings. The magnet assembly includes a plurality of magnets, a magnet housing disposed to house, cover and seal the plurality of magnets within the magnet housing, a plate to cover the plurality of magnets, a sealing element disposed between the plate and the magnet housing to seal the magnet assembly, and a groove formed to receive the sealing element between the plate and the magnet housing.

Abstract: Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.

Abstract: A rotor assembly for an electromechanical transducer is provided. The rotor assembly comprises a mechanical support structure and a magnet arrangement having a first magnetic component part and a second magnetic component part. The first magnetic component part and the second magnetic component part are attached to the mechanical support structure and are arranged along an axial direction (Z) of the rotor assembly. With respect to the axial direction a first cross section of the first magnetic component part has a first shape and a second cross section of the second magnetic component part has a second shape being different from the first shape. It is further described an electromechanical transducer and a wind turbine, which are both equipped with such a rotor assembly.

Abstract: A disclosed terminal block assembly for a generator includes a terminal block with a base with first and second transverse terminal surfaces adjoining one another. One of the terminal surfaces includes an increased width greater than a length of a cable terminal lug for providing a lightning strike and creepage barrier. The terminal surfaces include spaced apart protrusions extending from the first and second surfaces to provide spaced apart terminal areas overlapping the first and second surfaces. First and second terminal studs are disposed within each corresponding first and second terminal areas and are electrically connected by a bus bar.

Abstract: A permanent magnet motor (1) is configured such that mN?K is satisfied to an integer m, where the pole number of a rotor (3) is K and the number of divided iron cores (10-12) of a stator (2) is N, and N values of r(?), r(?+360°/N), . . . , r(?+(i?1)×360°/N), . . . , r(?+(N?1)×360°/N) are equal so that the absolute value of the difference between any two of the N values becomes up to a predetermined value, where r(?) is an inner radius defined as, on a plane perpendicular to a rotary shaft (7) of the rotor (3), a distance from the rotary shaft (7) center to a surface of the stator iron core (4) facing the rotor (3) where an angle from a fitting portion (15) of the partial iron core (10) is ? on the perpendicular plane, ? taking 0 to 360°/N.

Abstract: Described is a wind turbine, a generator and a rotor housing for a generator with an external rotor, the rotor housing comprising a support structure, wherein the support structure is cylindrical shaped, a cone and a ring. The ring and the cone are attached together at an inner side of the cone in a horizontal plane, forming a front part of the rotor housing. The support structure is attached to the cone at a front end of the support structure, forming a side part of the rotor housing, and the support structure is formed out of segmented support structure parts. Also disclosed is the method for making the rotor housing.

Abstract: A microelectromechanical system (MEMS) device includes a temperature compensating structure including a first beam suspended from a substrate and a second beam suspended from the substrate. The first beam is formed from a first material having a first Young's modulus temperature coefficient. The second beam is formed from a second material having a second Young's modulus temperature coefficient. The body may include a routing spring suspended from the substrate. The routing spring may be coupled to the first beam and the second beam. The routing spring may be formed from the second material. The first beam and the second beam may have lower spring compliance than the routing spring. The MEMS device may be a resonator and the temperature compensating structure may have dimensions and a location such that the temperature compensation structure modifies a temperature coefficient of frequency of the resonator independent of a mode shape of the resonator.

Abstract: The invention relates to a synchronous machine with hybridenergisation, in particular a generator for supplying the electrical system of a motor vehicle, comprising a laminated stator (16) with a multiphase stator winding (18) and a laminated rotor (20) with an energizer winding (29), which together with permanent magnets (24,25) around the rotor periphery, provides the energisation for the machine. According to the invention, favorable electrical and magnetic properties and an improvement in manufacturing conditions of the machine can be achieved, wherein the grooves (40) for the energiser windings (29) are disproportionately enlarged in relation to the groove base (44) and are preferably bell-shaped.

Abstract: A motor waterproof structure includes a stator assembly, a casing and a cover body. The casing has a receiving space formed with an open side. A circuit board is disposed in the receiving space. The cover body is disposed on the open side of the receiving space to cover the circuit board. The motor waterproof structure serves to effectively protect the circuit board from being short-circuited and burned out in a humid environment.

Abstract: A motor assembly includes: a motor housing including: at least one brush receptacle having top and bottom ends; a locking element extending from the top end toward the bottom end; and a housing spring member; at least one brush holder apparatus including: a brush holder housing sized to be received within the brush receptacle, including: an upper surface and a lower surface; a receiving aperture; and an open end; a brush spring enclosed by the brush holder housing; and a brush located inside the brush holder housing; wherein the brush holder apparatus is inserted inside the brush receptacle; and wherein the housing spring member urges the brush holder apparatus toward the top end such that the locking element is received inside the receiving aperture.

Abstract: An apparatus and method for providing electrical insulation between adjacent end turns at different phases within a stator assembly. In one embodiment, the invention is directed to a stator assembly comprising: a stator core; at least two coils of different phases wound on the stator core through the slots and having an end turn that extends from the stator core; and one or more rigid separator members positioned between adjacent end turns of the coils.

Abstract: A method and device of torque generation based on electromagnetic effect is provided. An electromagnetic torque whose direction is opposite to the motor driving direction is generated in a magnetic field when a motor-drive armature winding is adopted based on the electro-magnetic induction principle. Meanwhile, a reverse electromagnetic torque which is reverse to the armature winding with the same magnitude, is applied on a magnet set and is transmitted to an underactuated system so as to provide required torque for the underactuated system. Advantageously, the provided torque is in direct ratio to speed, difficulty in control is significantly reduced, two-stage electromagnetic variable speed can be achieved, the design of the system is simple and reliable with a concise and clear structure, and the device may be employed in a wide variety of applications.

Abstract: A regenerative power supply system and method comprises a dynamo-electric generator, an electric drive motor coupled to the generator, a transmission device coupling the generator to the electric drive motor, and an energy storage device configured to provide a backup power supply to the regenerative power supply system. An electronic control device is configured to control a flow of electricity to the electric drive motor. An energy storage management device is configured to control a flow of electricity between the electronic control device and the energy storage device.

Abstract: A rotary motor includes a rotor and at least one stator. The rotor has a shaft. The stator has an iron core and a coil wound around the iron core. A cross section of the iron core perpendicular to the shaft has a long axis and a short axis, and the rotor is disposed on an extension line of the long axis.

Abstract: A rotor as disclosed for an electric machine which includes a rotor core having a plurality of rotor sheets stacked in an axial direction, each of the plurality of rotor sheets having a plurality of flux paths made of a material of high permeance, a plurality of flux barriers made of a material of low permeance, a plurality of bridges made of a material of high permeance, each of the plurality of bridges extending across a corresponding flux barrier, and at least one axial magnet located axially adjacent a corresponding bridge and configured to saturate the corresponding bridge, each axial magnet being axially pressed between two elements at least one of which is a bridge corresponding to the axial magnet.

Abstract: A stator arrangement for an electrical machine includes a casing element as one component and at least two stator segments, which are arranged in the casing element as further components. One of the components has a feather key groove and another one of the components has a feather key, which corresponds with the feather key groove, for bracing the one component against the other component.