Abstract: This invention provides an in-wheel motor capable of increasing steering operability and ride comfort of a vehicle. A stator 21 of an in-wheel motor 20 comprises a stator housing 21a and a stator housing cover 21b. The stator housing 21a is formed of a tubular-shaped housing annular portion 21a1, a housing flat-plate portion 21a2, a fold-back portion 21a3, and a flange portion 21a4. In the stator housing 21a, a housing recessed portion 211 is formed of the housing flat-plate portion 21a2 and the fold-back portion 21a3. The housing recessed portion 211 is provided with a hub bearing mounting portion 216 on which a hub bearing 26 is mounted. The stator housing cover 21b is provided with an upper arm attachment portion 217 and a lower arm attachment portion 218 for attaching an upper arm 31 and a lower arm 32 of a suspension device 30.

Abstract: An object of the present invention is to provide a highly efficient and highly reliable rotary electric machine. A rotary electric machine includes: a stator around which a plurality of coils are wound; and a rotor which is supported to be freely rotatable with a predetermined gap with respect to the stator. The coil has at least one connection portion per turn in a slot of the stator. Conductors to be connected mutually have steps at the connection portion, and are fitted with other conductors so as to mutually fill the steps. The steps have contact surfaces that come into contact with each other in the slot to be electrically conducted. A thermally expandable sheet capable of pressurizing the coil in a radial direction of the stator is arranged in the slot.

Abstract: The present invention addresses the problem of providing a rotating machine drive system comprising a winding switching device, wherein the rotating machine drive system has a relatively simple configuration, allows wear of electrical contacts during switching and sliding to be minimized, and is highly reliable.

Abstract: The purpose of the present invention is to provide a low-cost heat cycle system that can reduce power consumption; an in-wheel motor that is driven by using this heat cycle system; and a vehicle in which this heat cycle system is installed. This heat cycle system is provided with: a compressor; an accumulator; an electric drive unit comprising an electric motor; a refrigerant compressed by the compressor; and an indoor heat exchanger and an outdoor heat exchanger responsible for heat exchange of the refrigerant. The heat cycle system comprises a four-way valve that comprises a single circulation path for circulating the refrigerant and that can switch the connection destination of a refrigerant discharge section of the compressor to the indoor heat exchanger or the outdoor heat exchanger. A cooling unit of the electric drive unit is arranged upstream of the accumulator in the flow of the refrigerant.

Abstract: A rotary electrical machine comprises a cylindrical stator that generates a magnetic field, a rotor that generates torque through the magnetic field, and a housing that accommodates the stator. The housing comprises a housing body covering an outer circumferential part of the stator, and a housing lid part attached to one end side of the housing body. The stator comprises a stator core having a plurality of teeth, and a stator coil mounted on the stator core, and the stator coil has a plurality of windings wound onto the plurality of teeth, and a crossover wire connecting at least two of the plurality of windings. The crossover wire comprises an insertion mechanism that is provided to the housing lid part and electrically connects end parts of the windings and an end part of the crossover wire through insertion contact.

Abstract: High reliability and long life are achieved by being sliding-less. The switch according to the present invention includes: first terminal and a second terminal that are adjacently attached to a stator; a movable shaft movable in a first direction and a second direction, a plurality of movers attached to the movable shaft; and a movable segment that is connected to two of the plurality of movers and biases the two movers in a direction in which they are away from each other.

Abstract: An in-wheel motor with improved driving force has a simplified cooling structure for the motor and a braking device. The in-wheel motor has a motor that transmits motive power to a wheel, at least a portion of the motor being disposed inside the wheel; a first cooling part and a second cooling part that cool a stator of the motor; and a braking device that applies braking to the wheel. The braking device 25 is formed from a brake disc that rotates with the wheel and a brake caliper that induces braking by imparting friction to the brake disc. The brake caliper operates in the axial direction of the motor to induce braking in the brake disc. A portion of an axial-direction end of the brake caliper is in contact with the stator. The first cooling part and the second cooling part cool the braking device through the stator.

Abstract: A winding switching device switches parallel and series connections of windings of a rotating electric machine, and includes a plurality of electrodes that are connected to the windings and a power source, a movable portion in contact with the plurality of electrodes and includes a plurality of conductor portions, and an actuator that drives the movable portion. According to a contact state between the plurality of electrodes and the plurality of conductor portions, the windings are connected in parallel at a first position of the movable portion, and are connected in series at a second position of the movable portion. The electrodes include a first electrode connected to a first phase winding of the rotating electric machine in the plurality of windings, and a second electrode connected to a second phase winding. The first electrode and the second electrode are adjacent to each other, and form a neutral point.

Abstract: The purpose of the present invention is to provide: a stator for a dynamo-electric machine, with which axial size can be reduced; and, an electrically powered wheel provided with the stator for the dynamo-electric machine. A stator 10 for a dynamo-electric machine is provided with a stator core 100, a plurality of coils 201A-201D, and jumper wires 202A-202C. The stator core 100 has first teeth 101 around which a coil is wound and second teeth 102 around which a coil is not wound. The first teeth 101 and the second teeth 102 are disposed alternatingly in the circumferential direction. The jumper wire 202 extends circumferentially and radially with a bent section to absorb variations in the spacing between one coil and another, and is disposed at a position overlapping the second teeth 102 when viewed from the axial direction of the dynamo-electric machine.

Abstract: This rotating electric machine comprises: a stator having a stator core around which a plurality of coils are wound; a rotor supported to be rotatable relative to the stator with a predetermined gap therebetween; a rotor case that holds the rotor; and a first bearing and a second bearing that rotatably support the rotor case.

Abstract: A rotating electrical machine according to the present invention has a plurality of segmented coils respectively disposed in a plurality of layers aligned in a row in a radial direction inside a slot of a stator core. The segmented coils comprise: first regions (111a, 121a) that each have a straight line section disposed inside the slot and a protrusion that protrudes to the outside of the slot from one end of the straight line section; and second regions (112a, 122a) that are formed so as to extend toward one side in the circumferential direction from the other end of the respective straight line section, and such that the position in the radial direction changes.

Abstract: High reliability and long life are achieved by being sliding-less. The switch according to the present invention includes: first terminal and a second terminal that are adjacently attached to a stator; a movable shaft movable in a first direction and a second direction, a plurality of movers attached to the movable shaft; and a movable segment that is connected to two of the plurality of movers and biases the two movers in a direction in which they are away from each other.

Abstract: Provided is a conveyance device capable of reducing the weight of a conveyance device while preventing magnetic saturation. A conveyance device according to the present invention is characterized by comprising a conveyance path (65) in which a conveyed object is moved, an electromagnet provided on the surface of the conveyance path (65) opposite to the surface on which the conveyed object moves, and a drive circuit for supplying a current to the electromagnet, the electromagnet including teeth (22a, 22b) formed from a magnetic body, and windings (21a, 21b) wound onto the surface of the teeth (22a, 22b), a yoke (26) is provided that supports the teeth (22a, 22b), and the relationship between the minimum cross-sectional area Sy of the yoke (26) and the minimum cross-sectional area St of the part of the teeth (22a, 22b) where the windings (21a, 21b) are provided is Sy<St.

Abstract: A rotary electric machine (100) comprising, in order to increase a torque density, a stator (101) and a rotor (102) provided so as to be rotatable about the axial center (C), wherein: phase coils (120G) each having a substantially rectangular coil-cross-section are arranged in a row in the radial direction in a slot (110) so as to constitute a plurality of layers; the phase coils (120G) are each wound over a group of three or more slots (110) which are contiguously arranged in the circumferential direction; identical-phase slots (111) are provided on each of which only a combination of phase coils (120G) of an identical phase are arranged; different-phase slots (112) are provided on each of which only a combination of phase coils (120G) of two different phases are arranged; and the different-phase slots (112) are disposed one by one so as to be adjacent to respective two sides of sets of identical-phase slots (111) comprising at least two slots arranged contiguously in the circumferential direction.

Abstract: An object of the present invention is to provide a winding switching device capable of enhancing the reliability of electrical contact between a movable unit and a fixed unit, and a rotating electrical machine drive system including such a winding switching device.

Abstract: A motor control device of the present invention is connected to a power converter for converting power from direct current power to alternating current power, and controls the drive of an alternating current motor that is driven using said alternating current power, and the motor control device is provided with: a carrier wave generator; a carrier wave frequency adjuster that adjusts the frequency of the carrier wave; and a gate signal generator that uses the carrier wave to pulse width modulate a voltage command according to a torque command, and generates a gate signal for controlling operation of the power converter, wherein the carrier wave frequency adjuster adjusts the voltage command and carrier wave phase difference to reduce eddy current loss generated in rotor magnets of the alternating current motor according to a d-axis current flowing to the alternating current motor and the rotational speed of the alternating current motor.

Abstract: The present invention addresses the problem of providing a winding for an electromagnetic component, a stator for a rotary electric machine, a rotary electric machine, and a wheel, which can simplify an assembly step while improving joint quality of a coil end. This winding for electromagnetic components comprises a first conductor (3) and a second conductor (4) electrically connected to the first conductor (3). The first conductor (3) and the second conductor (4) are fixed inside an electromagnetic component. At least one among the first conductor (3) and the second conductor (4) has a bent section (10). The first conductor (3) is pressed against and makes close contact with the second conductor (4) by a restoring force (12) due to residual stress of the bent section (10).

Abstract: A rotating electric machine having high efficiency and high reliability without causing an increase in size and cost is realized. Each of the rectangular wire segment coils has a first region portion and a second region portion connected to the first region portion and formed in the circumferential direction including a bent portion in the circumferential direction of the stator core 10, and a pair of the rectangular wire segment coils adjacent to each other at the coil ends of the plurality of rectangular wire segment coils has a conductive portion to which the first region portion of one of the rectangular wire segment coils and the second region portion of the other of the rectangular wire segment coils are connected.