Abstract: In a rotating electrical machine, a field element includes a field element core to which magnets are fixed. The magnet has a pair of first acting surfaces opposing each other and through which a magnetic flux flows in or flows out, and a second acting surface serving as an inflow surface or an outflow surface for magnetic flux in a q-axis-side end portion. Between an acting surface on the armature side of the pair of first acting surfaces and the second acting surface, the magnet has a magnet magnetic path that extends from one acting surface to the other. The field element core has a q-axis-side portion adjacent in the circumferential direction to the acting surface of the magnet. A controller controls an energization phase of phases of an armature winding to cause a state of magnetic saturation of the q-axis-side portion of the field element core to be variable.

Abstract: A motor including a wound coil includes: a stator core, a cross-section of which has a ring-shape, extending in a longitudinal direction of the motor, the stator core including a plurality of teeth in the stator core, the plurality of teeth are spaced apart from each other in a circumferential direction of the stator core, and a plurality of slots arranged between the plurality of teeth; a coil extending in a longitudinal direction of the stator core and extends into the plurality of slots; and a coupling core, which includes shoes coupled to inner ends of the plurality of teeth and which is disposed inside the stator core so as to be integrally coupled to the stator core.

Abstract: Stator cores and methods for fabricating stator cores are provided. An exemplary stator core includes a stack of laminations. Each lamination in the stack of laminations comprises a yoke and a plurality of tooth segments fixed to the yoke.

Abstract: Provided is a motor. The motor includes a stator that includes a stator core and a coil that is wound around the stator core, and a rotor that is rotatably disposed in the stator, wherein the stator core includes a plurality of teeth that are radially formed along an inner circumferential surface of the stator core, a plurality of shoes that extend in a circumferential direction from both sides of an end of each of the plurality of teeth, and a tip portion that extends in the circumferential direction from an end of each of the plurality of shoes to contact a tip portion of an adjacent tooth.

Abstract: A stator for an electric rotating machine includes a stator core that has an annular yoke portion, a plurality of tooth portions, a plurality of connecting portions and a plurality of slots. The tooth portions are separately formed from and assembled to the yoke portion. Each of the tooth portions extends radially inward from a radially inner periphery of the yoke portion. The tooth portions are arranged in the circumferential direction of the yoke portion at predetermined intervals. Each of the connecting portions circumferentially extends to connect a corresponding circumferentially-adjacent pair of the tooth portions. Each of the slots is formed between a circumferentially-adjacent pair of the tooth portions. Moreover, each of the slots is partitioned by a corresponding one of the connecting portions into a radially-outer section and a radially-inner section.

Abstract: The present invention relates to an electric commutator motor (1) that comprises a stator (2) and a rotor core (3), wherein the magnetic flux transmittance between the rotor (3)-stator (2) is improved and the noise level is reduced by securing a ferromagnetic rotor sleeve (5) on the outer circumference press-fittingly. The sleeve is made of a ring shaped ferromagnetic laminations.

Abstract: The present invention relates to a permanent-magnet synchronous motor, particularly an electric three-phase motor, comprising a stator having a stator yoke in which stator teeth with interposed stator grooves are arranged, wherein on each stator tooth at least one winding is provided, further comprising a rotor having permanent magnets, wherein the stator teeth are arranged in layers as disks in the axial direction of the stator and designed at least as two different disks, wherein the stator teeth in a first disk are connected peripherally among each other at the ends thereof pointing toward the rotor in the form of a stator star by a connecting bridge and in a second disk have an interruption instead of the connecting bridge. The present invention further relates to an electric power-assisted steering system.

Abstract: An outer rotor motor includes a stator and a rotor. The stator includes a stator core having a plurality of teeth, coils and insulators retaining the coils. The insulators are connected to each other in an annular configuration such that the teeth are inserted into the insulators. Each of the insulators includes a body portion and an outer peripheral flange. Each of the insulators further includes an auxiliary tooth portion on at least one of two axial ridge portions. The axial ridge portions include bonding portions between the body portion and the outer peripheral flange. The auxiliary tooth portion includes a rotor-facing surface facing the rotor and a tooth-contacting surface contacting one of the side surfaces in the circumferential direction.

Abstract: A modular electromagnetic device has a stator and a rotor rotating between facing surfaces of the stator and bearing a plurality of magnets distributed with alternate orientations in a substantially ring-shaped pattern, and the stator comprises at least one pair of magnetic yokes symmetrically located at both sides of the rotor. Each yoke has a pair of projecting arms extending towards the magnets and bearing a respective coil for collection of electric power from or supply of electric power to the device. Each yoke is individually mounted on an own support equipped with adjusting units arranged to adjust the yoke position relative to the confronting magnets, and forms, together with its coils, its support, the adjusting units thereof, and sensing and control means controlling the yoke adjustment, an elementary stator cell that can be replicated to form single-phase or multiphase modules.

Abstract: A maglev motor and a pump using the maglev motor can be provided with strong magnetic bearing force generated by a simple structure, rotation losses of a rotor reduced with the generation of an eddy current suppressed, and a configuration of magnetic bearing can downsize by using a thin rotor.

Abstract: The present invention relates to a two-phase brushless DC motor which can increase a pemerance coefficient of a rotor to the maximum to thereby improve efficiency and starting feature of the motor, and to reduce torque ripple and noise thereof. The brushless motor of the present invention includes a two-phase winding stator having 4×n winding poles and auxiliary poles provided between the winding poles, and a rotor constituted by 6×n permanent magnet rotating poles having divided angle. Auxiliary poles between the stator poles can be provided. The two-phase brushless motor of the present invention can be driven by a control device for the two-phase motor which can transform electric power and rectify electronically.

Abstract: Attachments are removably coupled to the magnetic core of a rotating electric machine, the magnetic core being shaped to include a plurality of coil-receiving slots that are separated by radial teeth. Each attachment is constructed as a unitary member and includes a base and a stem, the stem being dimensioned for fitted insertion within a recess formed in the distal end of a corresponding tooth. The base includes a convex bottom wall, a flattened top wall and a pair of non-planar sidewalls. The stem is integrally formed on the top wall of the base and includes a front end, a rear end, a flattened top wall and a pair of opposing sidewalls. A longitudinal groove is formed into each of the pair of opposing sidewalls of the stem. An outwardly protruding shoulder designed for engagement by a retention plate is formed into the front and rear ends of the stem.

Abstract: A magnetic levitation motor including a stator having magnetic bearing units and a motor unit, and a rotor provided to the stator. And the occurrence of an eddy current at a magnetic bearing is suppressed and the rotation loss of the rotor can be reduced, and also to provide a pump using such the magnetic levitation motor.

Abstract: The depth from the open end of a rotor slot closest to a magnetic pole of a rotary core to a slot bottom or the bottom of a subslot provided as a coolant ventilation path on a rotor slot bottom is made less than the depth of slots at and after a second slot counted from the magnetic pole side in the direction of internal circumference, and when a shortest distance between the bottoms of the rotor slots opposed to each other through a magnetic pole or a shortest distance between the bottoms of the subslots is assumed to be a magnetic pole width of the slots, a magnetic pole width Wp1 of a slot closest to the magnetic pole side is set to 85% or more of a magnetic pole width Wp2 of a second slot counted from the magnetic pole side in the direction of internal circumference.

Abstract: In a hybrid magnetic bearing, the electromagnet has a core wound with a control coil and has a main pole and a commutating pole with a commutating pole permanent magnet provided approximately parallel to each other at predetermined intervals in a protruding condition radially or axially to the rotor. In the magnetic bearing provided radially, two electromagnets are placed oppositely to each other across the rotor in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets. In the magnetic bearing provided axially, two electromagnets are placed in parallel in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets.

Abstract: Disclosed is an electric machine (1) comprising a stator (2) that encompasses a winding system (10) with three winding branches, and a certain number of effective pole pairs. Each winding branch is provided with at least one coil group, each of which contains an even number of serially connected individual coils (11) that generate an individual magnetic field, respectively. Two respective individual coils (11) of a coil group are offset relative to each other in a circumferential direction of the stator (2) in such a way that the associated individual magnetic fields are provided with an offset electrical angle relative to one another at the sixth harmonic of the number of effective pole pairs, said offset electrical angle being equal to an odd multiple of 180°.

Abstract: Included are a rotor, and a stator having a yoke section and a teeth section including multiple teeth. The teeth section and the yoke section are made of mutually independent configuration members, and connected to each other. At least one of the teeth section and the yoke section is formed by connecting each neighboring two of its multiple segments arranged one after another in a direction in which the rotor rotates. At least some neighboring teeth out of the multiple teeth are unified.