Abstract: The invention relates to an electrical machine (10), in particular an electronically commutated EC motor, and to methods for producing an electrical machine (10) of this type having a pole pot (15), in which a stator (16) and a rotor (18) are received, and a plug housing (33) with an integrated connector plug (37) is arranged axially on the open side of the pole pot (15), wherein a rotor shaft (20) of the rotor (18) protrudes with a free end (80) axially out of the pole pot (15) into the plug housing (33), and a magnetic signal generator (75) for rotational position detection is arranged at the free end (80), which magnetic signal generator (75) interacts with a magnetic field sensor (77) which lies axially opposite it, wherein the magnetic field sensor (77) is configured as a wired single-part component and is fastened directly to the inner side (29) of the plug housing (33) without the use of a printed circuit board.

Abstract: The present invention discloses a sealed outer rotor motor structure comprising a shell type rotor, a self-aligned bearing housing, an oil seal, a concentric shaft, a stator and magnets. The self-aligned bearing housing is disposed in the shell type rotor. A through type bearing chamber concentric to the shell type rotor is disposed in the self-aligned bearing housing. A sealing ring groove located in the concentric shaft fixing hole is disposed on the concentric shaft. A bearing located within the through type bearing chamber is disposed on the concentric shaft. The oil seal is disposed on the self-aligned bearing housing to achieve sealing of a tail end of the shell type rotor. With the above-described mode, the rotational stability of the shell type rotor of the sealed outer rotor motor structure described by the present invention is high, improving the sealing effects during rotation of the shell type rotor.

Abstract: A coil assembly of a stator is configured in such a manner that an air core region of each magnet coil houses effective coil parts of different magnet coils. The outer shape of each magnet coil in a section perpendicular to a center axis of a rotor is a divided ring-like shape defined by dividing a circular ring into equal N parts. Two sides of the divided ring-like shape form an angle set to be 360°/N or less. Each magnet coil is made of a coil conductive wire including a conductive wire bundle as a bundle of multiple non-insulated conductive wires each being a non-insulated wire, and an insulating coating layer covering the periphery of the conductive wire bundle.

Abstract: A motor includes a shaft, a bearing, an armature disposed radially outward of the bearing, a bracket, a rotor, and a circuit board on which a Hall element is mounted. The rotor includes a rotor magnet radially opposed to the armature radially outward of the armature. The bracket includes a cylindrical portion including an outer peripheral surface to which the armature is fixed, a bracket bottom portion extending radially outward from a lower end portion of the cylindrical portion, a bracket side wall portion extending upward from an outer peripheral portion of the bracket bottom portion, and a board holding portion connected to the bracket side wall portion. The circuit board is held by the board holding portion. The Hall element is held by the bracket side wall portion.

Abstract: Each of the magnet coils is configured as a concentrated winding coil with an air core including an upper base part, a lower base part, and two leg parts. The upper base part of one of the magnet coils is housed in the air core region of a different one of the magnet coils which is adjacent to the one magnet coil at the side of the upper base part, and the upper base part and the leg parts of one of the magnet coils are aligned in a circular direction with corresponding ones of the upper base part and the leg parts of another different one of the magnet coils which is adjacent to the one magnet coil at the side of the lower base part, without overlapping corresponding ones of the upper base part and the leg parts of the another different magnet coil in a radial direction.

Abstract: A stator core for a rotary electric machine is provided, which includes core members stacked and formed annularly so as to surround a rotor, each core member including a plurality of slots extending from one end to another end in a shaft direction and teeth formed between the slots. A whole of the teeth includes a first teeth section including, at a tip on an inner periphery side of each core member, each tooth including a first protrusion portion and a second protrusion portion with a lower protrusion height than the first protrusion portion protruding in a circumferential direction of each core member and a second teeth section including a pair of the first protrusion portions and/or a pair of the second protrusion portions.

Abstract: A rotor that includes a permanent magnet; and a rotor core that has a magnet placement hole in which the permanent magnet is disposed, wherein the stress relaxation magnetic flux suppression hole is formed such that a total width of a minimum width of a first magnetic flux passage between a portion of the stress relaxation magnetic flux suppression hole on a first side in the longitudinal direction and the magnet placement hole and a minimum width of a second magnetic flux passage between a portion of the stress relaxation magnetic flux suppression hole on a second side in the longitudinal direction and the magnet placement hole is less than a total length of a length of the first magnetic flux passage in the longitudinal direction and a length of the second magnetic flux passage in the longitudinal direction.

Abstract: Systems and methods for electric motor, where the stator core has one or more stator core sections, each of which is a single-piece unit formed of soft magnetic composite (SMC) material, and where the stator core sections are positioned end-to-end with seals at each end to form a plurality of stator slots, where each of the stator slots extends through each of the stator core sections and is in fluid communication with the others to form a sealed stator chamber. The sealed stator chamber may have an expansion chamber to allow expansion and contraction of dielectric fluid in the stator chamber while maintaining separation of the dielectric oil from lubricating oil which is within the motor but external to the stator chamber. The sealed stator chamber can prevent well fluids that leak into the motor from reaching the stator windings and degrading their insulation.

Abstract: Systems and methods for electric motor, where the stator core has one or more stator core sections, each of which is a single-piece unit formed of soft magnetic composite (SMC) material, and where the stator core sections are positioned end-to-end with seals at each end to form a plurality of stator slots, where each of the stator slots extends through each of the stator core sections and is in fluid communication with the others to form a sealed stator chamber. The sealed stator chamber may have an expansion chamber to allow expansion and contraction of dielectric fluid in the stator chamber while maintaining separation of the dielectric oil from lubricating oil which is within the motor but external to the stator chamber. The sealed stator chamber can prevent well fluids that leak into the motor from reaching the stator windings and degrading their insulation.

Abstract: An electric drive includes a rotor and a stator in toothed-coil technology, wherein the stator has a number of individual tooth modules. A respective individual tooth module has a stator winding which is wound around an associated tooth, a control device which is designed to generate an activation signal for the stator winding, and a shielding device which surrounds the stator winding and the control device.

Abstract: An automotive motor includes a stator and a rotor disposed within the stator. The automotive motor also includes an endplate attached to the rotor that defines a coolant exit hole, an outer edge, and an array of staggered raised flow disruptors disposed radially between the coolant exit hole and outer edge. The array disrupts flow of coolant as the coolant travels from the coolant exit hole along a surface of the endplate toward the outer edge.

Abstract: An on-board electric compressor that comprises: a housing; a compression unit; an electric motor; and an inverter device. The inverter device comprises: an inverter circuit that converts direct current power to alternating current power; and a noise reduction unit that is provided on an input side of the inverter circuit and that reduces common mode noise and normal mode noise that are included in the direct current power The noise reduction unit comprises: a common mode choke coil; and a smoothing capacitor that, in cooperation with the common mode choke coil, constitutes a low pass filter circuit. The common mode choke coil has: a core that has a first core part and a second core part; a first winding that is wound around the first core part; and a second winding that is wound around the second core part.

Abstract: An electric motor with a heat source is arranged on a shaft in a co-rotating manner, wherein a first and a second cooling fin arrangement interact in order to dissipate heat from the heat source to the outside.

Abstract: A power tool includes a housing and an electric motor assembly supported in the housing. The electric motor assembly includes a stator core and a circuit board proximate an end of the stator core. The circuit board includes a heat-generating component facing away from the stator core. The electric motor assembly also includes an end cap coupled to the stator core and in thermal contact with the heat-generating component as a heat sink to remove thermal energy from the heat-generating component.

Abstract: A molded motor of the present invention includes a rotor, a stator, a pair of shaft bearings, a pair of metal brackets, and a molding resin. The rotor has: a rotary shaft extending in a shaft direction; and a rotary body that has a permanent magnet and is fixed to the rotary shaft. The stator has: a stator core on which a plurality of salient poles are formed; and a plurality of coils each wound on each salient pole via an insulator, where the stator is covered by the molding resin and is disposed to face the rotor. The pair of metal brackets each fix each of the shaft bearings, and the shaft bearings rotatably support the rotor. Further, the rotary body has a dielectric layer formed between the rotary shaft and an outer peripheral surface of the rotary body. A metal member is provided, on an outer peripheral side of a coil end of the coil and on at least a part facing the coil end, in a circumferential direction.

Abstract: A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.

Abstract: A motor includes a shaft centered on a center axis oriented in a vertical direction, a bearing rotatably supporting the shaft, an armature disposed radially outward of the bearing, a bracket to which the bearing and the armature are fixed, and a covered cylindrical rotor connected to the shaft. The rotor includes a disk-shaped rotor lid portion connected to the shaft, and a rotor side wall portion extending downward from an outer edge of the rotor lid portion. The shaft is made of metal. The rotor lid portion and the rotor side wall portion are made of resin. The rotor lid portion and the shaft are an integrally molded article.

Abstract: A circuit board to be mounted in a non-drive end shield of an electric motor has a converter formed on the circuit board. The circuit board is divided into a central region and a number of toothed regions surrounding the central region, wherein planes of the toothed regions are bent with respect to a plane of the central region in a mounting position.

Abstract: A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.

Abstract: Disclosed herein are a motor and a method of manufacturing the motor. The motor includes a rotor, a stator including a plurality of coil bobbin unit groups, and a coil prepared on coil bobbin units by winding a wire sequentially on coil bobbin units of each coil bobbin unit group, cutting the wound wire at a cutting point, connecting one end of the cut wire to a neutral point port, and connecting the other end of the cut wire to a driving point port.