A three-dimensional magnet structure (6) made up of a plurality of individual magnets (4), the magnet structure (6) having a thickness that forms its smallest dimension, the magnet structure (6) incorporating at least one mesh (5a) exhibiting mesh cells each one delimiting a housing (5) for a respective individual magnet (4), each housing (5) having internal dimensions just large enough to allow an individual magnet (4) to be inserted into it, the mesh cells being made from a fibre-reinforced insulating material, characterized in that a space is left between the housing (5) and the individual magnet (4), which space is filled with a fibre-reinforced resin, the magnet structure (6) comprising a non-conducting composite layer coating the individual magnets (4) and the mesh structure (5a).

A rotor assembly for a permanent magnet motor, including: a rotor shaft comprising an internal cavity having an inlet and an outlet; and a rotor core disposed about the rotor shaft, comprising an internal channel having an inlet and an outlet; wherein the outlet of the internal cavity of the rotor shaft is coupled to the inlet of the internal channel of the rotor core; and wherein the internal cavity of the rotor shaft and the internal channel of the rotor core are configured to circulate a cooling fluid through the rotor shaft and the rotor core. The rotor core includes a plurality of permanent magnets adapted to interact with a stator assembly disposed about/adjacent to the rotor core.

A rotor assembly for a permanent magnet motor, including: a rotor shaft comprising an internal cavity having an inlet and an outlet; and a rotor core disposed about the rotor shaft, comprising an internal channel having an inlet and an outlet; wherein the outlet of the internal cavity of the rotor shaft is coupled to the inlet of the internal channel of the rotor core; and wherein the internal cavity of the rotor shaft and the internal channel of the rotor core are configured to circulate a cooling fluid through the rotor shaft and the rotor core. The rotor core includes a plurality of permanent magnets adapted to interact with a stator assembly disposed about/adjacent to the rotor core.

An apparatus is provided for forming an axial flux permanent magnet synchronous motor. The apparatus includes a stator assembly including a plurality of stator poles spaced about a stator shaft, each comprising a winding. Adjacent pairs of stator poles have a spacing in a circumferential direction approximately equal to or greater than a width of the stator pole. A rotor assembly includes a plurality of rotor poles of alternating magnetic polarity arranged for electrically communicating with the windings of the stator assembly. The ratio of stator poles to rotor poles may be less than 4:6 or, more specifically, less than or equal to about 1:2.

Disclosed are a three-phase alternating-current synchronous motor with an improved structure, and electrical equipment. The three-phase alternating-current synchronous motor includes a stator (13) and a rotor, where the rotor includes a driving rotor (14) and a driven rotor (15) that are arranged coaxially, with a rotor shaft (153) being fixed to the driven rotor, and during starting, the driving rotor firstly rotating and then driving the driven rotor to rotate. The electrical equipment includes an industrial fan, an air compressor, an elevator, an aerator and a winch that use a three-phase alternating-current synchronous motor.

Disclosed are a three-phase alternating-current synchronous motor with an improved structure, and electrical equipment. The three-phase alternating-current synchronous motor includes a stator (13) and a rotor, where the rotor includes a driving rotor (14) and a driven rotor (15) that are arranged coaxially, with a rotor shaft (153) being fixed to the driven rotor, and during starting, the driving rotor firstly rotating and then driving the driven rotor to rotate. The electrical equipment includes an industrial fan, an air compressor, an elevator, an aerator and a winch that use a three-phase alternating-current synchronous motor.

Displacement devices comprise a stator and a moveable stage. The stator comprises a plurality of coils shaped to provide pluralities of generally linearly elongated coil traces in one or more layers. Layers of coils may overlap in the Z-direction. The moveable stage comprises a plurality of magnet arrays. Each magnet array may comprise a plurality of magnetization segments generally linearly elongated in a corresponding direction. Each magnetization segment has a magnetization direction generally orthogonal to the direction in which it is elongated and at least two of the magnetization directions are different from one another. One or more amplifiers may be connected to selectively drive current in the coil traces and to thereby effect relative movement between the stator and the moveable stage.

A rotary motor includes a stator and a rotor configured to rotate around a rotation axis. The rotor includes a frame including a first surface facing the stator and a plurality of first recesses arrayed along a circumferential direction around the rotation axis and opened on the first surface, the frame being formed in an annular shape, main magnets disposed in the first recesses or among the first recesses, and sub-magnets disposed in the first recesses when the main magnets are disposed among the first recesses and disposed among the first recesses when the main magnets are disposed in the first recesses.

A rotary motor includes a stator and a rotor configured to rotate around a rotation axis. The rotor includes a frame including a first surface facing the stator and a plurality of first recesses arrayed along a circumferential direction around the rotation axis and opened on the first surface, the frame being formed in an annular shape, main magnets disposed in the first recesses or among the first recesses, and sub-magnets disposed in the first recesses when the main magnets are disposed among the first recesses and disposed among the first recesses when the main magnets are disposed in the first recesses.

A hybrid drive assembly having an e-motor with a housing fixed stator and a rotor that connects to a transmission. The e-motor rotor includes a rotor support having a mounting flange with a stop at one end. A diaphragm spring clamps a second rotor ring, a rotor stack, and a first rotor ring against the stop to rotationally fix the rotor stack to the mounting flange. A drive plate assembly for connection to a crankshaft includes an output flange that is: (a) frictionally engaged to the diaphragm spring and/or the second rotor ring such that upon application of a torque spike the output flange rotates relative to the diaphragm spring and/or the second rotor ring, or (b) rotationally fixed to the diaphragm spring such that upon application of a torque spike the diaphragm spring rotates relative to the mounting flange, forming in each case an overload clutch.