Abstract: A support device for a rotor of an internal-rotor synchronous machine of a motor vehicle includes a star disk, which is able to be arranged on the laminated core of the rotor between an end side of the laminated core and end windings of the rotor windings, and a support ring for encasing the star disk. The star disk has a ring carrier for arranging on a rotor yoke of the laminated core, supporting teeth, protruding radially from the ring carrier, for arranging on rotor teeth of the laminated core, and collar-type end pieces, protruding axially from ends of the supporting teeth, for arranging on pole shoes of the rotor laminated core. The end pieces of the star disk and the support ring have mutually complementary bayonet joint regions, which are designed to connect the star disk and the support ring in a form-fitting manner.

Abstract: A power transmission assembly includes a base, a rotating frame rotatably coupled to the base and configured to rotate about an axis, an output shaft coupled to the rotating frame, a weight selectively repositionable relative to the rotating frame, and a weight actuator configured to reposition the weight relative to the rotating frame to move the weight from a subtraction position located at a first height to an addition position located at a second height. The second height is greater than the first height such that a gravitational force on the weight drives the rotating frame to rotate about the axis and drive the output shaft.

Abstract: A temperature detection unit for a stator of an electric motor, includes a plate, a support element, at least two feet, and at least two temperature sensors, wherein the temperature sensors are arranged one on each of the feet.

Abstract: A motor includes a stator with a first stator, a second stator, and a third stator, each including at least one stator coil, and a rotor including a magnetic element, a first bearing, a second bearing, and a shaft, the stators generating a superimposed magnetic field together causing the magnetic element to rotate. When the magnetic element rotates in the first plane, the outer ring of the first bearing rotates. The center of the first bearing is located in a plane where the second bearing is located, and when the magnetic element rotates in the second plane, the inner ring of the second bearing rotates. A central axis of the shaft passes through the center of the first bearing; wherein the shaft is rotatably fixed to the first bearing and connected to the second bearing.

Abstract: An electromagnetic machine includes a housing, an axle coupled to the housing in a rotatable fashion, a stator assembly disposed generally within the housing, the stator assembly including a stator plate and a stator bearing coupled to the axle such that the stator assembly is rotatable about the axle, a rotor assembly fixed to the axle and disposed generally within the housing and including a rotor housing that defines a circumferentially extending channel that is sized to receive a portion of the stator assembly therein; and a locking mechanism configured to selectively prevent and permit rotation of the stator assembly about the axle via the stator bearing. The housing can include an access window defined therein such that the stator assembly is accessible through the access window.

Abstract: A human motion energy harvesting apparatus embeddable in a wearable electronic device is provided. The apparatus may include a base; a first rotor disposed in a ring shape and connected to the base, the first rotor being rotatable circumferentially relative to the base, wherein a plurality of pairs of first permanent magnets may be disposed on a surface of the first rotor; an oscillating weight fixed coaxially with the first rotor; a second rotor disposed in a ring shape and coaxially connected to the base with the first rotor, the second rotor being rotatable circumferentially relative to the base, wherein a plurality of pairs of second permanent magnets may be disposed on a surface of the second rotor; a modulation ring fixed to the base coaxially with the first rotor between the first rotor and the second rotor; and a stator fixed to the base coaxially with the first rotor on a side of the second rotor opposite the first rotor, wherein a coil is arranged on the stator.

Abstract: This motor includes a yoke, an armature, a brush holder and a ground member. The yoke has the shape of a bottomed cylinder that has an inner surface to which a magnet is affixed. The armature is contained within the yoke. The brush holder is arranged in an opening of the yoke, and holds a feed brush for supplying an electric current to the armature, and a bearing that axially supports a rotary shaft of the armature. The ground member is in contact with the bearing and the yoke. The ground member is affixed to a ground terminal that is held by the brush holder.

Abstract: A conductor bar for a stator winding of a rotating electrical machine includes a bundle of parallel conductor strands extending between two ends of the conductor bar and spaced apart by interspaces. A main insulation is wound around the bundle of conductor strands and a stack separators fills at least part of the interspaces. Protection elements are between the bundle of conductor strands and the main insulation. At least one of the protection elements or the stack separators are configured to compensate, at least in part, thermal expansion of the conductor elements when temperature changes.

Abstract: A rotary electric machine includes a stator core having a plurality of teeth arranged in a row along a circumferential direction of the stator core, and a stator coil composed of a winding wire wound around the teeth. The stator coil includes coil end portions extending, outside the stator core in an axial direction thereof, along a substantially circumferential direction of the stator core, and straight portions extending along the axial direction, the straight portions being at least partially housed in a slot which is a void defined by two adjacent teeth of the plurality of teeth. In the rotary electric machine, a cooling groove is formed at least in the straight portion, the cooling groove functioning as a cooling channel through which a cooling fluid flows, and each straight portion includes only one cooling channel.

Abstract: Disclosed a rare-earth permanent-magnetic axial coreless generator with double magnetic circuits, including a main shaft, a coreless stator winding, an inner rotor structure connected with the main shaft and an outer rotor structure. The outer rotor structure and the inner rotor structure are spaced apart by the coreless stator winding and are connected with the main shaft; the coreless stator winding is arranged between the inner rotor structure and the outer rotor structure, to establish a generator structure with two magnetic field air gaps; when the main shaft drives the outer rotor structure and the inner rotor structure to rotate simultaneously under the action of an external force, a rotating magnetic field with double magnetic circuits is generated in the generator; and the coreless stator winding can simultaneously cut magnetic lines of the rotating magnetic field with double magnetic circuits by using contact surfaces inside and outside the winding.

Abstract: A DC motor is provided that can suppress a commutator from wearing. A DC motor including a commutator formed of copper or a copper alloy of 99% or more copper, and a brush pressed against and in contact with the commutator, wherein the brush is composed of a sintered compact including graphite and copper powder, hard compound particles higher in hardness than any of the copper or the copper alloy and the graphite or the copper powder are contained in at least one of the commutator and the brush and are scattered on or near a contact surface of the commutator with the brush at least during use.

Abstract: Apparatuses, systems, and methods of use for a magnetic coupling device is disclosed. The magnetic device may have a plurality of magnets to create a magnetic field to the devices enclosed within the device. The coupling device may have a housing that encloses and/or partially surrounds one or more rotatable shafts. The coupling device may couple an output shaft from a motor to an input shaft of a generator. The coupling device may have an electric coil that when energized may vary any applied magnetic field to the rotatable shafts. The magnetic device may have a first plurality of magnets positioned at a first radial position and a second plurality of magnets positioned at a second radial position, with the first magnets being rotatable and the second magnets being stationary. Multiple magnetic coupling devices may be coupled together in series to provide increased magnetic fields to the enclosed system.

Abstract: A motor brush quick change assembly that includes brush units and electrical spring contacts. The brush units include a carrier with a housing and a brush. The electrical spring contacts are connected to an electrical device. Each of the brush units is configured to be removably attached to the electrical device to contact one of the electrical spring contacts. The brush unit thus provide for both a mechanical and electrical connection to the electrical device. The brush units are configured to prevent the need for separate electrical leads that require separate attachment and detachment to the electrical device. This design provides for straight-forward removal and replacement that can be performed by a robotic device or an operator.

Abstract: A stepping motor has a relationship between an outer diameter of a rotor and an outer diameter of a bearing made of magnetic material that can be adjusted appropriately so as to impart magnetic attractive force to the bearing, the stepping motor including a rotor 400 made of a permanent magnet, a stator including multiple pole teeth 223, 243, 323 and 343 extending in an axial direction of the rotor 400 arranged at an outer circumferential side of the rotor 400, a bearing 250 rotatably supporting one end portion in the axial direction of the rotor 400, and a bearing 260 rotatably supporting the other end portion in the axial direction of the rotor 400.

Abstract: An axial field rotary energy device with a PCB stator having interleaved PCBs is disclosed. The device can include rotors that have magnets and an axis of rotation. A stator assembly can be located axially between the rotors to operate electrical phases. The stator assembly can include PCB panels. Each PCB panel can have layers, and each PCB panel can be designated to one of the electrical phases. Each electrical phase of the stator assembly can be provided by a plurality of the PCB panels. In addition, the PCB panels for each electrical phase can be axially spaced apart from and intermingled with each other.

Abstract: There are provided electric motors each having a rotor, a stator, and a plurality of conductive windings each disposed around a corresponding tooth of the stator. The rotor is to rotate about an axis of rotation defining an axial direction. The rotor includes a backiron and a plurality of magnets secured to an inner surface of the backiron. The stator is disposed inside the rotor and centered about the axis of rotation. The stator includes a plurality of teeth each extending radially relative to the axis of rotation towards the inner surface of the backiron and terminating in a corresponding tooth end disposed proximal to the inner surface.

Abstract: A rotary electric machine includes a stator core having a plurality of teeth arranged in a row along a circumferential direction of the stator core, and a stator coil composed of a winding wire wound around the teeth. The stator coil includes coil end portions extending, outside the stator core in an axial direction thereof, along a substantially circumferential direction of the stator core, and straight portions extending along the axial direction, the straight portions being at least partially housed in a slot which is a void defined by two adjacent teeth of the plurality of teeth. In the rotary electric machine, a cooling groove is formed at least in the straight portion, the cooling groove functioning as a cooling channel through which a cooling fluid flows, and each straight portion includes only one cooling channel.

Abstract: Disclosed are various embodiments for a new and improved electric motor/generator including a toroidal magnetic cylinder centered on the longitudinal axis, and a coil assembly including a first coil assembly support positioned within the toroidal magnetic cylinder, and a second coil assembly support positioned within the toroidal magnetic cylinder.

Abstract: A motor component for a linear motor having a first primary part with two first electromagnetic coils and a second primary part with two second electromagnetic coils, arranged substantially parallel in relation to one another. At least one common laminated core unit is provided for the first and the second primary parts, which common laminated core unit comprises one-piece sheet-metal elements. Each of the one-piece sheet-metal elements of the laminated core unit in each case has first recesses, which are arranged one behind the other in the longitudinal direction of an adjustment path of the linear motor, for the first coils of the first primary part and at second recesses, which are arranged one behind the other in the longitudinal direction of the adjustment path of the linear motor, for the second coils of the second primary part.

Abstract: A coaxial double-rotor variable-speed electromagnetic drive includes an external rotor, an end cover, a load shaft, a stator, and an internal rotor, the external rotor, the load shaft, the stator, and the internal rotor being coaxially arranged. The end cover includes a first end cover and a second end cover that are respectively disposed at two ends of the drive, the external rotor is slidably connected to the two end covers separately by bearings, the load shaft is slidably connected to the first end cover and the inner side of the external rotor separately by bearings, the stator is fixed on the inner side of the first end cover and disposed inside the external rotor, air gaps are kept separately between the stator and the internal rotor and between the stator and the external rotor, the internal rotor is sleeved on the load shaft and is disposed inside the stator.