Disclosed are various embodiments for a new and improved electric motor/generator including a toroidal magnetic cylinder centered on the longitudinal axis, and a coil assembly including a first coil assembly support positioned within the toroidal magnetic cylinder, and a second coil assembly support positioned within the toroidal magnetic cylinder.

The present disclosure is directed towards a method of manufacturing a permanent magnet such that the magnet defines a channel for allowing circulation of a coolant through the permanent magnet, or defines a channel for allowing circulation of the coolant through an interface between the permanent magnet and a substrate. Magnets made by this method may be useful for manufacturing and/or operating a machine, such as a motor, engine, or sensor.

In a rotor core and a motor including the rotor core, a rotor yoke includes magnetic pole core groups arranged in a circumferential direction and each including a magnetic conductor at a center and permanent magnets around the magnetic conductor. A center of each magnetic pole core group is defined by the magnetic conductor, so that the number of magnets used can be reduced to achieve low cost. The permanent magnets around the magnetic conductor increases a magnetic flux concentration effect while preventing magnetic flux leakage to achieve high efficiency and high performance.

In a rotor core and a motor including the rotor core, a rotor yoke includes magnetic pole core groups arranged in a circumferential direction and each including a magnetic conductor at a center and permanent magnets around the magnetic conductor. A center of each magnetic pole core group is defined by the magnetic conductor, so that the number of magnets used can be reduced to achieve low cost. The permanent magnets around the magnetic conductor increases a magnetic flux concentration effect while preventing magnetic flux leakage to achieve high efficiency and high performance.

A rotating electric machine , and an electric wheel using the rotating electric machine, has a rotatably supported rotor and a stator separated by a prescribed gap from the rotor, wherein the rotor has a magnetic pole ring formed from a circular permanent magnet, and a core piece embedded in the permanent magnet. The magnetic pole ring has outer and inner peripheral surfaces formed in a ring shape, wherein one of the outer peripheral surface and the inner peripheral surface is a gap-facing surface that faces the aforementioned gap, and the other is a non-gap-facing surface different from the gap-facing surface. The non-gap-facing surface of the magnetic pole ring is configured from the permanent magnet, the gap-facing surface of the magnetic pole ring is configured containing the permanent magnet and the exposed core piece, and the permanent magnet is magnetized such that the core piece is the magnetic center.

A stator includes a core and a molded midsection arranged to define a plurality of slots. The stator also includes a plurality of conductors wound within the slots. Portions of the midsection immediately adjacent to the slots include magnetic insulator embedded therein. The magnetic insulator is electrically insulating and has ferrimagnetic ordering. The stator further includes a plurality of non-magnetic wedges disposed between the conductors and an inner diameter surface of the stator.

A stator includes a core and a molded midsection arranged to define a plurality of slots. The stator also includes a plurality of conductors wound within the slots. Portions of the midsection immediately adjacent to the slots include magnetic insulator embedded therein. The magnetic insulator is electrically insulating and has ferrimagnetic ordering. The stator further includes a plurality of non-magnetic wedges disposed between the conductors and an inner diameter surface of the stator.

A core for an electrical apparatus includes a plurality of electrical steel sheets having a ferromagnetic or ferrimagnetic coating applied to both sides of the electrical steel sheets. The electrical steel sheets are arranged in a stack to form a laminated stack. The ferromagnetic or ferrimagnetic coating is applied to both sides of the electrical steel sheets. The coating may comprise MnZn ferrites, NiZn ferrites, MgMnZn ferrites, CoNiZn ferrites, Co ferrites, Ni ferrites, Yttrium iron garnets (Y3Fe5O12) or other ferromagnetic or ferrimagnetic coating materials.

A core for an electrical apparatus includes a plurality of electrical steel sheets having a ferromagnetic or ferrimagnetic coating applied to both sides of the electrical steel sheets. The electrical steel sheets are arranged in a stack to form a laminated stack. The ferromagnetic or ferrimagnetic coating is applied to both sides of the electrical steel sheets. The coating may comprise MnZn ferrites, NiZn ferrites, MgMnZn ferrites, CoNiZn ferrites, Co ferrites, Ni ferrites, Yttrium iron garnets (Y3Fe5O12) or other ferromagnetic or ferrimagnetic coating materials.

Disclosed is an ultra-micro voice coil motor based on Micro-Electro-Mechanical System (MEMS) three-dimensional coil. The ultra-micro voice coil motor based on MEMS three-dimensional coil comprises a yoke, where an accommodating cavity is formed in the yoke, and a tongue is arranged in the accommodating cavity of the yoke; and two permanent magnets symmetrically arranged at a top and a bottom of the accommodating cavity; the three-dimensional coil is provided with an iron core slot, and the tongue of the yoke passes through the iron core slot to be in clearance fit with the three-dimensional coil; one end of the yoke is provided with a baffle, same poles of two magnets face each other, and a stator of the voice coil motor is the three-dimensional coil or the yoke and the permanent magnets.