An inner-rotor motor includes a shaft, a rotor magnet, a stator arranged radially outside of and opposite to the rotor magnet, and upper and lower brackets arranged to hold upper and lower bearings. The upper bracket includes an upper cylindrical cover press fitted to an outer circumference of a stator core from above, an upper bearing holding portion configured to hold the upper bearing, and a top plate portion arranged to join the upper cylindrical cover to the upper bearing holding portion. The lower bracket includes a lower cylindrical cover press fitted to the outer circumference of the stator core from below, a lower bearing holding portion arranged to hold the lower bearing, and a bottom plate portion arranged to join the lower cylindrical cover to the lower bearing holding portion. Each of the upper and lower brackets is fixed to the stator core through press fitting.

An integrated hybrid rotary assembly is configured to provide power, torque and bi-directional communication to a rotatable sensor, such as a lidar, radar or optical sensor. A common ferrite core is shared by a motor, rotary transformer and radio frequency communication link. This hybrid configuration reduces cost, simplifies the manufacturing process, and can improve system reliability by employing a minimum number of parts. The assembly can be integrated with the sensor unit, which may be used in vehicles and other systems.

The present invention relates to a superconducting electric machine (1) comprising an inductor (3) having: superconducting pellets (7) circumferentially distributed about an axis (X) of the electric machine (1), an armature (2) comprising coils (5), each coil (5) having a circumferential radially inner edge (10) and a circumferential radially outer edge (9), andat least one flow barrier (12, 12) extending circumferentially with respect to the axis (X), each flow barrier (12) extending between the superconducting pellets (7) and the armature (2) so as to at least partially cover at least one of the radially outer edge (9) and the radially inner edge (10) of all or part of the coils (5) of the armature (2).

A bracket includes a bracket housing that has a bore extending through the bracket housing and that has a channel extending through the bracket housing between a first channel opening and a second channel opening. The bore provides fluid communication between the power electronic device and the compressor assembly. A terminal block subassembly is disposed in the channel. The terminal block subassembly includes a plurality of busbars spaced apart from each other and each extending between a first busbar end and a second busbar end. An overmold encasement is disposed over the busbars between the first and second busbar ends. The first busbar ends are disposed adjacent to the first channel opening and electrically couple to a compressor assembly and the second busbar ends are disposed adjacent to the second channel opening and electrically couple to a power electronic device.

A method of detecting and positioning an insulation failure of an aircraft generator is provided, comprising: S1, for each stator slot in the aircraft generator, wrapping one semiconductor layer on a surface of an external insulation layer of each copper conductor in the stator slot; S2, for each semiconductor layer, partitioning the semiconductor layer to obtain a plurality of zones, disposing a resistor-inductance branch network in each zone, and connecting the resistor-inductance branch networks to form an insulation failure detection circuit; S3, supplying power to a three-phase winding of the aircraft generator from an external power source; S4, determining whether an unearthed voltage is present in four end corners of the insulation failure detection circuit; if not, returning to S3 for further powering; if yes, outputting a detection result and collecting an insulation failure position with potential change and difference in the insulation failure detection circuit as a positioning result.

The disclosure relates to electrical machine condition monitoring by placement of a Fibre Bragg Grating (FBG) in the stator of an electrical machine. Example embodiments include an electrical machine comprising: a stator having a plurality of stator teeth having windings around each tooth; a rotor rotatably mounted within the stator; and an optical fibre mounted to the stator, wherein the optical fibre comprises a Fibre Bragg Grating, FBG, positioned between an adjacent pair of stator teeth and oriented to measure a tangential strain between the pair of stator teeth.

Assembly for supplying power to a rotating electric machine for driving a vehicle including at least one string of modules having first and second terminals. Each string includes at least one module having its tertiary and quaternary terminals connected to a first power supply bus and at least one module having its tertiary and quaternary terminals connected to a second power supply bus, the modules of each string being distributed in particular between modules having their tertiary and quaternary terminals connected to the first power supply bus and modules having their tertiary and quaternary terminals connected to the second power supply bus. At least one DC/DC converter of a module of each string is an isolated and reversible converter.

A vehicle drive device includes: a rotary electric machine including a rotor and a stator; a housing member forming a housing chamber that houses the rotary electric machine; a cover member connected to one end side of the housing member in an axial direction, facing the rotary electric machine in the axial direction, and including a support portion that rotatably supports the rotor; a power switching element electrically connected to a coil of the stator; and a smoothing capacitor electrically connected to the power switching element. The power switching element and the smoothing capacitor are fixed to the cover member and disposed between the cover member and the rotary electric machine in the axial direction. The smoothing capacitor overlaps the power switching element when viewed in a radial direction.

A vehicle drive device includes: a rotary electric machine including a rotor and a stator; a housing member forming a housing chamber that houses the rotary electric machine; a cover member connected to one end side of the housing member in an axial direction, facing the rotary electric machine in the axial direction, and including a bearing support portion that rotatably supports the rotor; a power switching element electrically connected to a coil of the stator; and a smoothing capacitor electrically connected to the power switching element. The smoothing capacitor is disposed on a radially outer side of the power switching element when viewed in the axial direction.

A device for transmitting power includes a Motor Circuit Protector (MCP) and a motorized mechanism. The MCP includes contacts that electrically connect a power supply to a low voltage motor in a closed position, and disconnect the power supply from the low voltage motor in an open position. The motorized mechanism includes a shaft, a controller, and an electric actuator. The shaft is fixed to each of the one or more contacts, and actuates the contacts to the open and closed positions. The controller is electrically connected to the power supply, and processes operating instructions and transfers power to the electric actuator according to the operating instructions. The electric actuator actuates the shaft upon receiving the power, and the low voltage motor rotates when the power supply is connected thereto.