A plurality of plate-like magnets are partially bonded at a predetermined interval to an inner circumferential surface of a rotor yoke with a first adhesive via a positioning member for positioning in a radial direction and in an axial direction, and a second adhesive is heat-cured in a state where the positioning member is removed, thus bonding and fixing the plurality of plate-like magnets at a predetermined interval and spaced apart from each other in a circumferential direction.

A plurality of plate-like magnets are partially bonded at a predetermined interval to an inner circumferential surface of a rotor yoke with a first adhesive via a positioning member for positioning in a radial direction and in an axial direction, and a second adhesive is heat-cured in a state where the positioning member is removed, thus bonding and fixing the plurality of plate-like magnets at a predetermined interval and spaced apart from each other in a circumferential direction.

An electromechanical transducer includes a stator assembly and a rotor assembly including a rotor shaft having a longitudinal axis, a mounting structure connected to the rotor shaft, and at least one magnetic component part including at least one permanent magnet, wherein a skew angle between the permanent magnet and the stator assembly has a value of 60% to 92% of a cogging torque period, or for an integral machine, wherein the skew angle between the permanent magnet and the stator assembly has a value of 35° to 55° electrical degrees.

A front iron core includes a first iron core main body and a plurality of first projecting sections which project to a radial outer side from the first iron core main body. A second iron core includes a second iron core main body which overlaps with the first iron core main body and a plurality of second projecting sections which project to a radial outer side from the second iron core main body. When a rotor iron core is viewed along the axis line, portions of the second projecting sections protrude as extension sections to outward in the circumferential direction, from the first projecting sections. Furthermore, when the rotor iron core is viewed along the axis line, radial-direction outer side end surfaces of the extension parts are smoothly continuous with radial-direction outer side end surfaces of the first projecting sections.

An integrated motor linear actuator system includes one or more stator stages inside a housing. The stator stages have a winding and a stator core disposed about a common longitudinal axis, with a plurality of stator teeth configured to guide magnetic flux generated by the winding. A rotor is disposed along the longitudinal axis, within the stator stages, with a plurality of magnetic poles distributed circumferentially about the outer surface, adjacent the stator teeth, so that the stator stages are configured to drive the rotor into rotational motion about the longitudinal axis via the magnetic flux. A thrust tube and screw assembly are operationally coupled to the rotor, and configured to convert the rotational motion into linear motion of the thrust tube.

An integrated motor linear actuator system includes one or more stator stages inside a housing. The stator stages have a winding and a stator core disposed about a common longitudinal axis, with a plurality of stator teeth configured to guide magnetic flux generated by the winding. A rotor is disposed along the longitudinal axis, within the stator stages, with a plurality of magnetic poles distributed circumferentially about the outer surface, adjacent the stator teeth, so that the stator stages are configured to drive the rotor into rotational motion about the longitudinal axis via the magnetic flux. A thrust tube and screw assembly are operationally coupled to the rotor, and configured to convert the rotational motion into linear motion of the thrust tube.

Disclosed is a hermetic AC electric motor that includes harmonics shunting such that high frequency harmonics are shunted from the AC electric motor without the use of one or more high frequency filters in the associated motor drive. A related method of operating an AC electric motor includes shunting high frequency harmonics to a fluid passing through the AC electric motor. Also disclosed is a simplified variable speed motor drive system which eliminates the need for a filter for removing high frequency harmonics.

A rotating electric machine includes a stator and a rotor. The rotor includes a rotor core and a plurality of permanent magnets. The rotor core includes a plurality of core portions. The rotor core includes an annular portion and a plurality of coupling portions. Each of the plurality of coupling portions couples the annular portion and a first core portion of each of the plurality of core portions to each other. Each of the plurality of coupling portions has at least one coupling path. A sum of a width of a portion having the smallest width in at least one coupling path is smaller than a length of a joining boundary between the annular portion and each of the plurality of coupling portions.

A rotating electric machine includes a stator and a rotor. The rotor includes a rotor core and a plurality of permanent magnets. The rotor core includes a plurality of core portions. The rotor core includes an annular portion and a plurality of coupling portions. Each of the plurality of coupling portions couples the annular portion and a first core portion of each of the plurality of core portions to each other. Each of the plurality of coupling portions has at least one coupling path. A sum of a width of a portion having the smallest width in at least one coupling path is smaller than a length of a joining boundary between the annular portion and each of the plurality of coupling portions.

An aircraft with an in-boom lift propulsor includes a fuselage, a boom with a recess in the upper surface, and a lift propulsor comprising of a motor assembly and a propulsive element. Motor on the aircraft is operated through an interaction between the motor's magnetic field and electric current in a wire winding to generate force on a shaft of the motor. The in-boom lift propulsor helps prevent damages to the motor assembly and the aircraft by absorbing torque from the rotor and absorbing moment from the mating flange 328, where the mating flange 328 joins the motor assembly to the boom. The boom includes an access panel to service the motor assembly and invertor during maintenance.