458results about "Windings conductor material" patented technology

An AC generator for a vehicle including a rotor with a fan, a stator disposed around the outer periphery of the rotor, and a frame. The stator includes a laminated core having a plurality of slots, a plurality of electric conductors in the slots, and an insulator. There is a gap between the electric conductors and the insulator in a diametrical section of the slots, and an area ratio of the gap with respect to the sectional area of the slots is not more than 25%. A portion of the electric conductor positioned within the slot has a substantially rectangular shape along the shape of the slot.

An AC generator for vehicles includes a field rotor, a stator disposed around said field rotor and a frame for supporting the rotor and the stator. The stator has a laminated core having a plurality of slots, aluminum conductors housed in the slots, and an electric insulator. The aluminum conductor is constituted by in-slot portion and a crossover portion for connecting an in-slot portion in one slot to another in-slot portion in a different slot to provide a winding as a whole. The frame is provided with a plurality of windows substantially in a whole periphery thereof at portions encircling the crossover portions and substantially in an outer diametrical direction opposite to the crossover portions.

Hybrid conductors capable of achieving enhanced conductivity and current capacity over a wide range of frequencies are disclosed. The hybrid conductors may be used in electrical or thermal applications, or combinations of both. One method of fabricating such hybrid conductors includes complexing conductive metal elements (e.g., silver, gold, copper), transition metal elements, alloys, wires, or combinations thereof, with carbon nanotube materials. In the alternative, the hybrid conductors may be formed by doping the carbon nanotube materials in salt solutions.

In a stator of an alternator for a vehicle including a stator core and a multi-phase stator winding, the stator winding is composed of a plurality of conductor segments having a pair of conductor members connected with one another to form a first coil-end group disposed on one axial end of the stator core so that first U-turn portions of the conductor segments are surrounded by second U-turn portions of the conductor segments and a second coil-end group disposed on the other axial end of said stator core so that ends of said conductor segments are connected to form lap windings.

It is an object of this invention to provide an alternator for a vehicle in which all electric conductors forming bridge portions are sufficiently exposed to cooling winds so that the cooling performance is remarkably improved. It is another object of this invention to provide an alternator for a vehicle which is excellent in cooling performance, insulating characteristic, and heat resisting property. An alternator for a vehicle includes a stator. The stator includes an iron core 22, an electric conductor 21, and an insulator 23. The electric conductor 21 forms a winding on the iron core 22. The insulator 23 provides electric insulation between the electric conductor 21 and the iron core 22. The stator is supported by a housing. The dimension of openings of slots in the iron core 22 is smaller than the distance between inner side surfaces of the slots. The electric conductor 21 has accommodated portions accommodated in the slots, and bridge portions connecting the accommodated portions. Pieces of the electric conductor which extend out of the slots are approximately separated into a conductor groups 21f located on outer radial sides of the slots and a conductor group 21g located on inner radial sides of the slots, and form the bridge portions. Predetermined gaps are provided between pieces of the electric conductor in the bridge portions. The bridge portions have ridge portions inclined in a same circumferential direction in each of the outer radial side and the inner radial side, and top portions connecting the ridge portions along an axial and radial direction.

An AC generator for a vehicle including a rotor with a fan, a stator disposed around the outer periphery of the rotor, and frame. The stator includes a laminated core having a plurality of slots, a plurality of electric conductors in the slots, and an insulator. There is a gap between the electric conductors and the insulator in a diametrical section of the slots, and an area ratio of the gap with respect to the sectional area of the slots is not more than 25%. A portion of the electric conductor positioned within the slot has a substantially rectangular shape along the shape of the slot.

A rotary electric machine, such as a vehicular AC generator, comprises a rotor rotatably driven; and a stator having a stator iron core disposed to face the rotor and stator windings mounted at the stator iron core, the stator windings being composed of a plurality of electric conductors made from aluminum and copper. For example, the plurality of stator windings are different in materials from each other winding by winding, the materials being either the aluminum or the copper. Alternatively, the plurality of stator windings include windings each being made, part by part, from different materials, the different materials being the aluminum and the copper.

There is provided a stator of a rotary electric machine in which the proportion of the cross sectional area of a coil in the cross sectional area of the slot is high, and an electric power loss due to leakage flux can be reduced. The stator is a stator of a rotary electric machine including a stator and a rotor. The stator includes a stator core having multiple slots in a direction parallel to a rotational axis of the rotary electric machine, and a laminated flat-body conductor which is formed, in a press process, by laminating a predetermined number of flat-body conductors each of which has a predetermined shape. According to the predetermined shape, the flat-plate conductor has an open end portion such that the flat-plate conductor can be fitted in the stator core. The laminated flat-body conductor is inserted in the slots of the stator core, and the open end portion of the laminated flat-plate conductor is closed, whereby a coil is formed.

There is provided a stator of a rotary electric machine in which the proportion of the cross sectional area of a coil in the cross sectional area of the slot is high, and an electric power loss due to leakage flux can be reduced. The stator is a stator of a rotary electric machine including a stator and a rotor. The stator includes a stator core having multiple slots in a direction parallel to a rotational axis of the rotary electric machine, and a laminated flat-body conductor which is formed, in a press process, by laminating a predetermined number of flat-body conductors each of which has a predetermined shape. According to the predetermined shape, the flat-plate conductor has an open end portion such that the flat-plate conductor can be fitted in the stator core. The laminated flat-body conductor is inserted in the slots of the stator core, and the open end portion of the laminated flat-plate conductor is closed, whereby a coil is formed.

A motor-generator includes a rotor that rotates about an axis of rotation, and a stator that is stationary and magnetically interacts with the rotor. The rotor is constructed of two spaced apart rotor portions having magnetic poles that drive magnetic flux across an armature airgap formed therebetween. An armature, located in the armature airgap, has a substantially nonmagnetic and low electrical conductivity form onto which wire windings are wound. The form has a free end that extends inside the rotor, and a support end that attaches to the stationary portion of the motor-generator. The form is constructed with a thin backing portion and thicker raised portions extending from the backing portion in the direction of the magnetic flux. The wire windings have multiple individually insulated conductor wire. The conductors of a single wire are electrically connected together in parallel and electrically insulated between each other along their length inside the armature airgap. The wire windings are wound on to the form by inserting the wire to lie between the raised portions; the form provides position location and support for the wire windings during the winding process, and subsequently reacts the electromagnetically induced torque on the windings to the stationary portion of the motor-generator through the support end of the form and prevents the windings from contacting the rotor portions during rotation of the rotor.

The motor including a stator having a stator core, and an insulator provided to the stator core for winding a coil thereon, a rotor rotatably provided with respect to the stator, and a tap terminal provided to the insulator for positioning an end of the coil, wherein the coil includes a core wire of aluminum.

In a permanent magnet-embedded, concentrated winding motor, plurality of stator teeth are divided into, for example, three groups that include a plurality of adjacent stator teeth having coils wound around and that are provided with voltage in phase that are set as one group. Coils are wound in opposite directions around adjacent stator teeth in the same group, while the relation between the angle h of a slot opening between adjacent stator teeth of the same group and the angle H of a slot opening formed between adjacent stator teeth of different groups satisfies h<H≦3h.

In one embodiment, a permanent magnet rotor is provided. The permanent magnet rotor includes at least one permanent magnet and a substantially cylindrical rotor core including an outer edge and an inner edge defining a central opening. The rotor core includes a radius R, at least one pole, and at least one radial aperture extending radially though the rotor core from the outer edge to a predetermined depth less than the radius. The at least one radial aperture is configured to receive the at least one permanent magnet. The rotor further includes at least one protrusion extending into the at least one radial aperture, the at least one protrusion positioned substantially along a bottom of the at least one radial aperture and configured to facilitate retention of the at least one permanent magnet within the at least one radial aperture.

An aircraft landing wheel assembly comprising a set of rotating components and a set of static components wherein an applied electrical current applied to conductive elements associated with one set of components gives rise to primary magnetic fields which interact with reactive magnetic fields associated with the other set of components whereby the interaction of magnetic field forces gives rise to rotational forces which act on the rotating components of said aircraft landing wheel assembly to induce controlled forward rotation of the landing wheel prior to contact with the runway and controlled retardation assistance as required during deceleration of the aircraft after touch down with the runway.

This invention is directed to motors, rotors and stators, transformers, generators and related apparatus comprising carbon fiber windings, and in particular, laminated carbon fiber windings for the generation of electrical energy. The invention is also directed to methods for generating electrical energy from devices of the invention and to methods for reconditioning and repairing conventional apparatus with carbon fiber windings.

An electrically powered pump includes a pump arrangement that pumps a liquid, and an electric motor arrangement that has a stator and a rotor that are installed on a passage through which the liquid pumped by the pump arrangement flows. At least one of the stator and the rotor has a winding wire that generates a magnetic field when it is energized to rotate the rotor with respect to the stator to drive the pump arrangement. The winding wire has a conductive body through which an electric current passes and an insulation body that insulates the conductive body. The conductive body is made of a material predominantly composed of carbon. Thereby, the liquid pumped by a pump arrangement is prevented from corroding the winding wire.

A winding configuration for an electric machine includes a stator core with a plurality of winding slots, a plurality of conductor strands distributed in a winding slot of the plurality of winding slots, and an insulation matrix that surrounds each of the plurality of the conductor strands. The winding slot includes a slot cavity with a cross-section area and the plurality of distributed conductor strands are configured to maximize slot fill factor.

Conducting material for an electric conductor comprising nanostructures (31) and a charge-transfer agent that shifts the nanostructures' fermi level so that said nanostructures attain an enhanced conductivity.

A method of making a rotor is provided. The method includes mixing aluminum and carbon nanotubes; forming the mixture into an aluminum-carbon nanotube composite conductor bar; providing a laminated steel stack having a plurality of longitudinal slots; placing a plurality of the conductor bars in the longitudinal slots, first and second ends of the plurality of conductor bars extending out of the logitudinal slots; placing the laminated steel stack with the plurality of conductor bars in a casting mold having cavities for a pair of end rings wherein the first and second ends of the plurality of conductor bars extend into the cavities; and filling the cavities with aluminum, aluminum alloys, an aluminum composite, or combinations thereof. Rotors made from aluminum-carbon nanotube composite are also described.

A hermetic compressor includes a compressing device and a drive motor connected to the compressing device. The drive motor has a stator with a stator coil made of aluminum wire and an insulating layer disposed on an outer surface of the aluminum wire. The aluminum wire has a diameter between about 0.4 mm to about 1.2 mm.

A stator assembly adapted for use in an external rotor electric motor. The assembly includes a stator core having a hub, a plurality of teeth extending radially outward from the hub, a root tooth diameter and an outer diameter. Each tooth has a root, a neck extending from the root and a head opposite the root. The neck has a maximum width. Each adjacent pair of teeth has a pitch measured at the roots of the corresponding teeth. The assembly includes a winding wrapped around each tooth of at least three teeth of the stator core. A ratio of the root tooth diameter of the stator core to the outer diameter of the stator core is less than about 0.75. A ratio of the maximum tooth neck width to the tooth pitch measured at the root of the teeth is greater than about 0.36.

Flywheel generating multifunctional system comprising, a case subsystem, flywheel-bearing subsystem, energy conversion generating subsystem containing a multifunctional armature, power and propulsion subsystem. In the system, at least one of the following components is used, a flywheel including more than one pair of magnetic poles at the axial and radial positions respectively, a combination flywheel with enlarged magnetic pole excitation operating area, annular magnetic suspension bearing possessing constraining force of more than two two-dimensions, eccentric type ring shape magnetic suspension bearing, more than two multifunctional armatures using weak magnetic material as armature core, controllable movable armature winding with iron core made of soft magnetic material.

A generator is provided that includes at least one conductor. The conductor is made up of aluminium. In a preferred embodiment, the generator includes at least one pole set representing one phase, each pole set having a plurality of poles, and the at least one conductor is turned about the poles of a particular pole set such that only half a single turn is associated to each pole of the particular pole set.

The invention relates to the technical field of motors, in particular to a high-temperature superconducting motor. The motor comprises an electromotor and an electric generator, wherein an armature winding of the motor is formed by winding high-temperature superconducting wires, current passing the wires has an AC component; and a heat insulated layer of the motor is arranged on the outer part of the motor, and the heat insulated layer is not arranged between a rotor and a stator of the motor or the heat insulated layer with the thickness of less than 10mm is arranged between the rotor and the stator of the motor. In the concentrated winding scheme and the non-concentrated winding scheme provided by the invention, a spatial mutual interference phenomenon does not exist on the end parts of coils; because low frequency AC is used, the loss is lowered; and the safety and stability of the motor can be effectively guaranteed, and the motor is particularly applied to fields such as wind power generation, propulsion of ships and automobiles and the like.

A stator assembly adapted for use in an electric motor. The assembly includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. The stator core has an outer diameter, a root tooth diameter and an inner diameter. Each tooth has a root, a neck extending inward from the root, a head opposite the root, and a length measured from its root to its head. The neck has a width. Each adjacent pair of teeth define a slot having an area. The assembly also includes a winding having aluminum and / or copper wrapped around at least three teeth of the stator core. The stator core and winding have four, six or eight magnetic dipoles. The stator core outer diameter is in a range from about 5.1 inches to about 5.9 inches. The stator core inner diameter is less than about 3.0 inches.

A three-phase, high voltage motor for use in a scroll compressor includes a stator core having an annular rim and a plurality of teeth extending radially inward from the rim. Aluminum windings are wrapped around teeth of the plurality of teeth of the stator core. The windings are spaced 120 electrical degrees from each other. The motor further includes a rotor body that is rotatably mounted inside the stator core and includes an external surface facing the stator core.

In one embodiment, an electric machine is provided. The electric machine includes a machine housing and a stator disposed at least partially within the housing, the stator comprising a plurality of teeth and an aluminum winding wound around at least one tooth of the plurality of teeth. The electric machine further includes a radially embedded permanent magnet rotor disposed at least partially within the housing, the rotor comprising at least one radially embedded permanent magnet and configured to provide increased flux to reduce motor efficiency loss compared to a copper winding.

An amorphous alloy iron core permanent magnet brushless direct-current motor consists of the two portions including a motor body and a controller, wherein the motor body portion comprises a motor upper end cap, a motor lower end cap, a motor output shaft, a shaft sleeve, an upper framework, a lower framework, a stator coil, a stator iron core body, a rotor iron core body and neodymium iron boron permanent magnet block, and the controller portion comprises an aluminum metal based printing circuit board, a control cable, a double-core single chip microcomputer, a power VMOS tube and a Hall element. The amorphous alloy iron core permanent magnet brushless direct-current motor is characterized in that both the stator iron core body and the rotor iron core body are formed by superposing iron based amorphous alloy sheets, the stator iron core body is fixed through joint supporting of the upper framework and the lower framework, the stator coil is made by winding an anaerobic copper line, all of controller elements and circuits are integrated on the aluminum metal based printing circuit board, an outer thread is carved on the supporting aluminum metal cylinder of the aluminum metal based printing circuit board, the cylinder is screwed into the inner wall thread of the motor lower end cap during installation to form a motor body and controller mechanical-electrical integrated structure.