A stator core is configured by assembling divided cores in an annular shape. Each core includes a yoke part extending in a circumferential direction, and having opposite first and second facing sections. The first facing section includes an inner circumferential protrusion, an outer circumferential protrusion, and a central recess. The second facing section includes an inner circumferential notch, an outer circumferential notch, and a central protrusion. When the cores are assembled, the inner circumferential protrusion faces the inner circumferential notch, the outer circumferential protrusion faces the outer circumferential notch, and the central recess faces the central protrusion, and the outer circumferential protrusion is formed so as to have a width larger in a direction orthogonal to a circumference direction than that of the inner circumferential protrusion.

A motor stator assembly includes stator yoke, coil sets connected to the stator yoke, and a positioning plate removably connected to the stator yoke. Each coil set has a coil member with two terminal legs. The positioning plate has though openings. The terminal legs of each coil set extend through one of the through openings. The electrical conductor set has conductor layers and an insulating part encapsulating the conductor layers. Each conductor layer has conductor components each having connection holes exposed from the insulating part. One of the terminal legs of each coil set extends through one of the connection holes of one of the conductor components of one of the conductor layers.

There is provided a motor armature structure including an armature that includes: a winding body; an armature core having a plurality of winding cores; and a structure framework, at least a part of the structure framework includes an insulating member, and the armature core includes a molded magnetic material admixture.

A rotor of a wound rotor synchronous motor is manufactured by forming a rotor core using a plurality of core blocks, and fitting bobbins with a coil wound onto the core blocks. In particular, the core blocks are connected such that tops of the bobbins extend from bobbin bodies and are connected with tops of other bobbins fitted on the adjacent core blocks. Additionally, a molding material may be injected into spaces between the core blocks.

A method of manufacturing a rotor core, the method including laminating first laminated steel plates in an axial direction. The first laminated steel plates each include a plurality of flake portions arranged in a circumferential direction with gaps between each other and a plurality of protrusions protruding radially outward from an outer side surface of a base portion and each having at least a portion located in the gap between the flake portions. The method further includes fixing the base portions to each other and fixing the flake portions to each other. The method further includes removing the protrusions of the laminated steel plates radially outward.

A stator for an electric motor or generator, the stator comprising a circumferential support having a plurality of first engagement elements distributed about the circumferential support, a first resiliently deformable element having a first temperature sensing element mounted on the circumferential support, a plurality of teeth for receiving coil windings, wherein each tooth includes a second engagement element to allow engagement with a first engagement element on the circumferential support for allowing each tooth to be mounted on the circumferential support, wherein coil windings on a tooth are arranged to engage with the first temperature sensing element when the tooth is being mounted to the circumferential support with the first resiliently deformable element being arranged to deform upon the coil windings on the tooth engaging with the first temperature sensing element to move the temperature sensing element from a first position to a second position.

An electronic actuator is made up of a polyphase brushless motor comprising a rotor provided with permanent magnets and secured to an output shaft, and a stator supporting coils and providing the magnetic drive of the rotor, a first electrical connection assembly powering the coils, said stator being built into a stator module made up of a material which coats the wound stator as well as the first electrical connection assembly. The rotor is built into a rotor module made up of a flange coating a bearing that guides the shaft of the rotor. The stator module and the rotor module have elements for indexing and for attachment relative to one another.

A stator for an electric motor, in particular the steering motor of a motor vehicle, comprising a cylindrical stator yoke and a stator star joined therewith and having a number of radially outwardly directed stator teeth, the tooth tips thereof, in the assembly state, resting on the inner circumference of the stator yoke in corresponding connection points. The tooth tips on the stator star side, in the assembly state, in addition to being force-locked or frictionally locked with the connecting points on the stator yoke side in a press-fit, are also integrally bonded thereto.

A method and apparatus for reducing or eliminating the effects of torque ripple and cogging torque and otherwise improving performance in an electromechanical machine such as a motor or generator. The rotor and/or stator is conceptually sectionalized and the sections spaced apart by amount sufficient to alleviate deleterious aspects of cogging torque and torque ripple. Positioning of the stator teeth or rotor magnets is determined based on the calculated spacing. Conceptual sections may be formed as physically individual segments. Unwound teeth may be disposed in end spaces between sections occupying less than the entire area of the end space.

A magnetically isolated phase stator includes a stator phase section with two sides and a magnetically inactive isolation region on each side that prevents a permanent magnetic field from being shared from the stator phase section and another stator phase section of the stator. A magnetically isolated phase interior permanent magnet electrical rotating machine includes a magnetically isolated phase stator, a rotor, and an air gap between the stator and rotor defining a rotor-stator interface, the rotor having two or multiples of two permanent magnets arranged in parallel with opposing magnetic poles to direct magnetic flux through a pole of the rotor, through the air gap of the rotor-stator interface, and through a pole of the stator.