Abstract: A stator includes a stator core, and a coil mounted on the stator core and having an insulating film, at least a part of the insulating film being coated with a protective paint, wherein the insulating film has a vacancy, and the vacancy is formed by a hollow capsule. In addition, the protective paint has a powder, and an internal form of the vacancy is smaller than an external form of the powder.

Abstract: A stator includes a stator core, and a coil mounted on the stator core and having an insulating film, at least a part of the insulating film being coated with a protective paint, wherein a concave section is formed in a surface of the insulating film, and the protective paint is present in the concave section. The insulating film has hollow capsules formed therein.

Abstract: There is provided a rotor for a rotary electric machine including a rotor core of an approximately annular shape having a plurality of magnet inserting holes formed at predetermined intervals in a circumferential direction thereof, and a plurality of permanent magnets inserted into the magnet inserting holes. A rotor yoke on at least an outer circumferential side relative to the magnet inserting holes of the rotor core is formed of a magnetic material. The outer circumferential side relative to the magnet inserting holes of the rotor core has a hole portion approximately on a d-axis of each magnetic poles formed by the permanent magnets.

Abstract: A stator includes an annular stator core, and a coil formed of a plurality of electric wires having a conductor and an insulating film covering the conductor, and having a conductor exposed portion which protrudes in an axial direction of the stator core and in which the conductor is exposed at an end portion of each of the electric wires, and a coupling portion in which a distal end of the conductor exposed portion in one electric wire and a distal end of the conductor exposed portion in another electric wire are coupled. The conductor exposed portion of the electric wire is formed as a curved portion that is curved as a whole.

Abstract: An electric wire includes a conductor, and an insulating film that is configured to cover the conductor and that includes a porous layer having a porous therein, and a non-porous layer in which no porous is formed, wherein the non-porous layer is disposed as an outermost layer of the insulating film.

Abstract: A stator includes an annular stator core, and a coil constituted by a plurality of electric wires and having a coil end protruding in an axial direction of the stator core, wherein the electric wire includes a conductor, and an insulating film that is configured to cover the conductor and that includes a porous having porous therein, and a non-porous film with no porous formed therein, and a non-porous film formed with no porous therein, a first coil end, which protrudes toward a first side in the axial direction as an end portion of the electric wire is disposed, is formed on the first side in the axial direction with respect to the stator core, and the porous film is provided on the first coil end.

Abstract: An electric wire includes a conductor, and an insulating film that is configured to cover the conductor and that includes a porous layer having porous in an insulating material, and a non-porous layer formed with the insulating material while having no porous therein.

Abstract: A stator includes a stator core, and a coil mounted on the stator core and having an insulating film, at least a part of the insulating film being coated with a protective paint, wherein a concave section is formed in a surface of the insulating film, and the protective paint is present in the concave section. The insulating film has hollow capsules formed therein.

Abstract: A stator includes a stator core, and a coil mounted on the stator core and having an insulating film, at least a part of the insulating film being coated with a protective paint, wherein the insulating film has a vacancy, and the vacancy is formed by a hollow capsule. In addition, the protective paint has a powder, and an internal form of the vacancy is smaller than an external form of the powder.

Abstract: An electric wire segment includes a pair of electric wires, the respective electric wires being arranged in a first direction and having an exposed conductor section in which a conductive material is exposed by having an insulating film peeled off at an end portion thereof, and the exposed conductor sections of the respective electric wires being disposed at positions corresponding to each other, and a coupling section in which the pair of electric wires are coupled to each other at the exposed conductor sections thereof, wherein a peeling amount of the insulating films on facing sides of the exposed conductor sections in which the pair of electric wires face each other is larger than a peeling amount of the insulating films on outward sides of the exposed conductor sections which is opposite to the facing sides in the first direction.

Abstract: A vehicle comprises an electric motor, an electric motor control device which controls electric power to be supplied to the electric motor, an atmospheric pressure detection part which detects atmospheric pressure, and a storage part which stores the number of times that a voltage exceeding a partial discharge inception voltage set according to the atmospheric pressure detected by the atmospheric pressure detection part is input to the electric motor.

Abstract: A stator for a rotary electric machine gives higher visibility to foreign matter attached to a surface of an insulating film. The stator includes: a stator core that has multiple slots; and a stator coil that is wound around the stator core via the slots, wherein the stator coil includes multiple coil segment groups that are coupled with each other, and each of the coil segment groups has at least two rectangular wires, each having a porous film as an insulating member, wherein at least two of the rectangular wires have corresponding surfaces, facing perpendicular to a row direction thereof, arranged parallel to one another, and the porous film is formed to have pores in an insulating material with a porosity ratio of 17% or more but no more than 35%.

Abstract: A stator includes a stator core provided with a slot, and a conductive wire disposed in the slot. The conductive wire has a rectangular conductor, and a coating film coated on a surface of the rectangular conductor, a varnish configured to fix a surface of the coating film and an inner surface of the slot is filled between the surface of the coating film and the inner surface of the slot, and the surface of the coating is provided with a recessed part-forming region in which a recessed part into which the varnish enters is formed.

Abstract: There is provided a rotor for a rotary electric machine including a rotor core of an approximately annular shape having a plurality of magnet inserting holes formed at predetermined intervals in a circumferential direction thereof, and a plurality of permanent magnets inserted into the magnet inserting holes. A rotor yoke on at least an outer circumferential side relative to the magnet inserting holes of the rotor core is formed of a magnetic material. The outer circumferential side relative to the magnet inserting holes of the rotor core has a hole portion approximately on a d-axis of each magnetic poles formed by the permanent magnets.

Abstract: A rotary electric machine control system includes a rotary electric machine, a rotation speed sensor, a temperature sensor, and circuitry. The rotary electric machine includes a rotor. The rotation speed sensor is to detect a rotation speed of the rotor. The temperature sensor is to detect a temperature of the rotary electric machine. The circuitry is configured to classify an operation time during which the rotor rotates based on the rotation speed detected by the rotation speed sensor and the temperature detected by the temperature sensor. The circuitry is configured to calculate a fatigue degree of the rotor based on the operation time classified. The circuitry is configured to limit the rotation speed of the rotor or output a signal to a user when the fatigue degree exceeds a threshold value.

Abstract: In a rotor manufacturing method, two rotor cores (20) having magnet insertion holes (14) disposed with permanent magnets (40) are disposed opposite to each other with a middle die (110) interposed therebetween in a rotor core disposing step (S210), and resin is supplied to the two rotor cores (20) from the middle die (110) and the resin is filled between the magnet insertion hole (14) and the permanent magnet (40) in a resin filling step (S230). Therefore, it is possible to reduce the amount of cull which is a residual cured product of the resin.

Abstract: In the rotor manufacturing method, a plurality of resin tablets (150) are disposed to be annularly spaced from each other in resin tablet disposing step (S230), and resin (150a) is filled between a magnet insertion hole (14) and a permanent magnet (40) in resin filling step (S240) when the plurality of resin tablets (150) are pressed by one plunger (112). Therefore, it is possible to reduce the amount of cull which is a residual cured product of a resin material.

Abstract: One embodiment provides an electric rotary machine unit including: a first electric rotary machine having a first stator; and a second electric rotary machine having a second stator. A coil configured by plural coil segments is disposed in each of the first and second stators. The first and second stators are disposed so that connecting portions of the coil segments or joint portions of leg portions of the coil segments are positioned between the stator cores thereof. First and second feeding portions are interposed between the first and second stators in the axial direction and spaced apart from each other in the circumferential direction.

Abstract: A stator of a rotating electric machine, includes a stator core, a stator coil, and a coolant guide. The stator core has a first end surface and a second end surface opposite to the first end surface in a rotational axis of the rotating electric machine. The stator core has slots that are arranged around the rotational axis and that extend along the rotational axis from the first end surface to the second end surface. The stator coil is provided in each of the slots. The stator coil has a first coil end protruding from the first end surface and a second coil end protruding from the second end surface. The coolant guide disposed between the first end surface of the stator core and the first coil end of the stator coil to guide a coolant to flow in a circumferential direction around the rotational axis.

Abstract: A rotary electric machine control system includes a rotary electric machine, a rotation speed sensor, a temperature sensor, and circuitry. The rotary electric machine includes a rotor. The rotation speed sensor is to detect a rotation speed of the rotor. The temperature sensor is to detect a temperature of the rotary electric machine. The circuitry is configured to classify an operation time during which the rotor rotates based on the rotation speed detected by the rotation speed sensor and the temperature detected by the temperature sensor. The circuitry is configured to calculate a fatigue degree of the rotor based on the operation time classified. The circuitry is configured to limit the rotation speed of the rotor or output a signal to a user when the fatigue degree exceeds a threshold value.