A rotor core for an electric machine of an automobile includes a core stack including a plurality of lamination plates. Each lamination plate includes a plurality of apertures formed therein. The plurality of apertures of each of the lamination plates are axially aligned and define and a slot extending through the core stack and shaped to receive a corresponding insert. The rotor core also includes at least one insert received by the slot that provides radial structural stability to the plurality of lamination plates to prevent portions of the plurality of lamination plates adjacent the plurality of magnet slots from flexing due to radial forces exerted on the plurality of lamination plates during operation of the rotor core. The rotor core includes a load bearing polymer disposed within the aperture of the rotor core that provides contact between and the insert and the lamination plates.

A permanent magnet rotor structure for an underwater motor, an underwater motor and underwater equipment, related to the field of motors. The permanent magnet rotor structure for the underwater motor includes a rotor end cover; a plurality of permanent magnets arranged on an inner circumferential surface of the rotor end cover; a protective attachment structure arranged on surfaces of the plurality of permanent magnets; and an adhesive layer for adhering the protective attachment structure to the surfaces of the plurality of permanent magnets and covering the protective attachment structure. The permanent magnet rotor structure has characteristics of corrosion resistance and wear resistance, so that the service life of the underwater motor comprising the permanent magnet rotor structure can be prolonged.

A permanent magnet rotor structure for an underwater motor, an underwater motor and underwater equipment, related to the field of motors. The permanent magnet rotor structure for the underwater motor includes a rotor end cover; a plurality of permanent magnets arranged on an inner circumferential surface of the rotor end cover; a protective attachment structure arranged on surfaces of the plurality of permanent magnets; and an adhesive layer for adhering the protective attachment structure to the surfaces of the plurality of permanent magnets and covering the protective attachment structure. The permanent magnet rotor structure has characteristics of corrosion resistance and wear resistance, so that the service life of the underwater motor comprising the permanent magnet rotor structure can be prolonged.

A rotor assembly is disclosed herein that includes a diaphragm spring for retaining other components of the rotor assembly. The rotor assembly includes a rotor, a rotor carrier supporting the rotor, at least one spacer arranged on a radially inner side of the rotor, and the diaphragm spring. The diaphragm spring includes a first end formed on a radially outer end of the diaphragm spring that engages against the at least one spacer, and a second end formed on a radially inner end of the diaphragm spring that engages against the rotor carrier.

A rotor assembly is disclosed herein that includes a diaphragm spring for retaining other components of the rotor assembly. The rotor assembly includes a rotor, a rotor carrier supporting the rotor, at least one spacer arranged on a radially inner side of the rotor, and the diaphragm spring. The diaphragm spring includes a first end formed on a radially outer end of the diaphragm spring that engages against the at least one spacer, and a second end formed on a radially inner end of the diaphragm spring that engages against the rotor carrier.

Systems and methods relate to a vertical takeoff and landing (VTOL) platform that can include a stator and a rotor magnetically levitated by the stator. The rotor and stator can be annular, such that the rotor rotates about a rotational axis. The stator can include magnets that provide guidance, levitation, and drive forces to drive the rotor, as well as to control operation of rotor blades of the rotor that can be independently rotated to specific pitch angles to control at least one of lift, pitch, roll, or yaw of the VTOL platform. Various controllers can be used to enable independent and redundant control of components of the VTOL platform.

Systems and methods relate to a vertical takeoff and landing (VTOL) platform that can include a stator and a rotor magnetically levitated by the stator. The rotor and stator can be annular, such that the rotor rotates about a rotational axis. The stator can include magnets that provide guidance, levitation, and drive forces to drive the rotor, as well as to control operation of rotor blades of the rotor that can be independently rotated to specific pitch angles to control at least one of lift, pitch, roll, or yaw of the VTOL platform. Various controllers can be used to enable independent and redundant control of components of the VTOL platform.

A rotor of a motor according to the present invention comprises: a shaft; a rotor core having a shaft insertion hole, into which the shaft is inserted and coupled; a magnet coupled to the outer peripheral surface of the rotor core; and a rotor cover comprising an upper cap and a lower cap, which cover the upper and lower portions of the rotor core and of the magnet, respectively, wherein the outer periphery of the rotor core comprises a first corner portion and a second corner portion, and the inner periphery of the magnet comprises a first inner peripheral portion, which corresponds to the first corner portion, and a second inner peripheral portion, which corresponds to the second corner portion.

A rotor of a motor according to the present invention comprises: a shaft; a rotor core having a shaft insertion hole, into which the shaft is inserted and coupled; a magnet coupled to the outer peripheral surface of the rotor core; and a rotor cover comprising an upper cap and a lower cap, which cover the upper and lower portions of the rotor core and of the magnet, respectively, wherein the outer periphery of the rotor core comprises a first corner portion and a second corner portion, and the inner periphery of the magnet comprises a first inner peripheral portion, which corresponds to the first corner portion, and a second inner peripheral portion, which corresponds to the second corner portion.

In an axial gap motor, a rotor includes a plurality of rotor cores fixed in a circumferential direction of a rotor base, and a stator includes a plurality of stator cores fixed in a circumferential direction of a stator base, and coils wound around the stator cores. End faces of each of the rotor cores and end faces of the corresponding stator core are opposed to each other while being exposed to each other.