A rotating electrical machine includes a stator core including a plurality of stacked electromagnetic steel sheets, the stator core includes a core back and a tooth protruding from the core back, the tooth includes: plural first welded portions arranged on a first lateral face of the tooth with respect to a plane extending in a stacking direction of the electromagnetic steel sheets and equally dividing the width of the tooth, the first welded portions being arranged in the stacking direction; and plural second welded portions arranged on a second lateral face of the tooth with respect to the plane extending in the stacking direction, the second welded portions being arranged in the stacking direction, and the first welded portions and the second welded portions are staggered in the stacking direction.

A planar energy conversion device with a plurality of micro-conversion units is provided and includes a carrier. The carrier includes a plurality of cavities arranged horizontally. The cavities correspond in position to the micro-conversion units, respectively. Each micro-conversion unit includes: a magnetic rotor disposed in the corresponding cavity; and at least one ring-shaped stator surrounding the magnetic rotor, the magnetic rotor being integrated into the carrier and including a magnet component and a winding unit. The magnet component has multiple protruding portions horizontally arranged along the edge of the corresponding cavity. The winding unit has multiple winding elements corresponding in position to the protruding portions, respectively.

Modular cooling assemblies are provided for simultaneously cooling both a power module and a vehicle motor. Each cooling assembly may include a first cooling structure defining at least one major surface in thermal communication with the vehicle motor. A second cooling structure may be provided, defining at least one major surface in thermal communication with a power module. An interlayer structure may be provided, configured to couple the first cooling structure to the second cooling structure. The first cooling structure, the second cooling structure, and the interlayer structure are positioned in a stacked arrangement and configured to provide a flow of coolant fluid from a fluid inlet defined in first cooling structure, through the interlayer structure, and to at least one heat sink feature of the second cooling structure. The coolant fluid is then directed through a fluid outlet defined in the second cooling structure.

A stator module pack for an axial flux electric machine includes a housing for attachment to a stator base, a plurality of stator modules attached to the housing, and a drive unit attached to the housing. Each stator module includes a core having at least one winding disposed thereon. The drive unit is electrically connected to at least one stator module. A plurality of stator module packs and a plurality of drive units are coupled to the stator base to form a stator of the axial flux electric machine.

An electric brushless DC (BLDC) motor includes a stator and a rotor. The rotor includes a rotor shaft, a rotor core, a bearing, and a sense magnet ring. And end cap is radially oriented with respect to the rotor shaft and securely disposed adjacent the stator, the end cap having a first surface facing the stator, a second surface facing away from the stator, a bearing pocket centrally disposed to receive the at least one bearing of the rotor therein to support the rotor, and at least two retention features projecting from the first surface at a distance with respect to one another to form a lateral gap therebetween. A positional sensor board is radially received from a peripheral side of the end cap in contact with the first surface of the end cap and within the lateral gap between the retention features of the end cap.

A wheel assembly includes an attachment module, a motor module, a battery module, and a wheel. The wheel is rotatably coupled to the attachment module about a rotational axis of the wheel. The attachment module has a plurality of coupling elements, and the motor module and the battery module each releasably couple to one of the coupling elements. The wheel extends around the attachment, motor, and battery modules. The motor and battery modules are identically shaped in a direction along the rotational axis.

An electrical module configured to be connected to a power shaft of a turbine engine of an aircraft. The electrical module being configured to draw off power from/inject power into the power shaft. The electrical module comprising an electric machine comprising a machine housing in which a stator and a rotor is mounted, configured to be mechanically connected to the power shaft, the machine housing having a cylindrical shape extending along a cylinder axis, a first electric converter mounted in a first housing, a second electric converter mounted in a second housing, the second converter being independent of the first converter, the first housing and the second housing each being in the shape of a half-cylinder extending along the cylinder axis so as to form a cylindrical assembly that is mounted as an extension of the machine housing of the electric machine to limit the size of the electrical module.

An electric motor assembly is disclosed. The electric motor assembly can include a plurality of electric motors coupled to a common gear assembly. Individual motors within the electric motor assembly can be dynamically controlled to increase motor efficiency at a given torque and RPM output.

Certain embodiments are directed to devices, methods, and/or systems that use electrical machines. For example, certain embodiments are directed to an electrical machine comprising: at least one stator at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, wherein the at least one module is in spaced relation to the plurality of the magnets; and the at least one rotor being in a rotational relationship with the at least one stator, wherein the quantity and configuration of the at least one module in the electrical machine is determined based in part on one or more operating parameters; wherein the at least one module is capable of being independently controlled; and wherein the at least one module is capable of being reconfigured based at least in part on one or more of the following: at least one operating parameter during operation, at least one performance parameter during operation, or combinations thereof. Other embodiments are also disclosed.

An electromagnetic machine for generating force is provided. The electromagnetic machine includes a magnet having opposing sides extending along a longitudinal axis. The electromagnetic machine includes a pair of ferromagnetic bodies respectively extending along the opposing sides of the magnet, and along the longitudinal axis, each of the ferromagnetic bodies comprising: a back-iron portion; and a pole portion extending from the back-iron portion. The magnet and the ferromagnetic bodies include reciprocal retention devices at the opposing sides along the longitudinal axis. The electromagnetic machine includes electrical windings around respective pole portions of the ferromagnetic bodies, the electrical windings around the respective pole portions being independently controllable. The electromagnetic machine includes at least one cold plate configured to thermally isolate the magnet from the electrical windings.