652results about "Windings insulation material" patented technology

The invention relates to the technical field of electromagnetic coils, in particular to a laminated planar spiral coil winding. The laminated planar spiral coil winding is formed by laminating at least two layers of planar spiral coils, the spiral center fitting line formed by each turn of wire is linear, the planar spiral coils occupy the whole winding plane, the strong magnetic center deviates from the geometric center of the planar spiral coils, and the phases of the winding are different in layer. The invention aims to provide competitive choices for the axial flux motor winding, such as high copper full rate, low copper loss, large air gap, easy heat dissipation and low production cost.

A rotary machine coil includes: a coil conductor; and an insulation layer including a mica tape which is wrapped around an outer periphery of the coil conductor and in which a mica layer and a film layer are laminated in this order from the coil conductor side, and a cured material of a thermosetting resin composition with which the mica layer is impregnated. The permittivity in an insulation layer (first mica layer) on the inner-layer side is higher than the permittivity in an insulation layer (second mica layer) on the outer-layer side, thus reducing the electric field intensity applied in the insulation layer.

The invention relates to an enameled round wire, to a method for producing an enameled round wire and to the use of an enameled round wire. So far, lubricating wire paints, in particular wire paints having polymers containing siloxane groups, cannot be impregnated because the uppermost "last" lubricating layer in the multilayer wire paint structure is non-polar due to the siloxane groups. The invention suggests that the multilayer structure can be used in order to break at least the uppermost layer of lubricating paint by means of an intermediate step of energizing and / or Joule heating, which is often present, to raise the temperature to 200 DEG C or higher for a short period of time, thus, the subsequent impregnation with the liquid impregnating resin can be bonded to the thermally labile layer below the uppermost lubricating layer.

The present invention provides a core assembly, a motor, a compressor, and a vehicle. The core assembly includes: a core body, the core body includes a plurality of segmented cores, and a mounting groove is provided at the edge of at least one end face of each segmented core; a plurality of insulating frames, each segmented core is arranged between two insulating frames, and the two insulating frames are distributed at both ends of a segmented core, and at least one insulating frame is provided with an insulating protrusion for covering both sides of the segmented core on one end face facing the segmented core, and the insulating protrusion cooperates with the mounting groove. By covering both sides of the segmented core with the insulating protrusion, the thickness of the portion of the insulating frame covering the end face of the segmented core and extending along the end face can be effectively reduced while ensuring sufficient creepage distance between the winding of the motor and the core assembly, thereby reducing the length of the core assembly in the axial direction of the core body, thereby facilitating reduction in motor volume and weight, and high insulation reliability.

A stator for an axial flux machine includes a plurality of units (100; 200; 400) disposed generally circumferentially around an axis. Each of the units (100; 200; 400) is operable to generate a magnetic field generally parallel to the axis. Each of the units (100; 200; 400) respectively includes: an axially extending stator core tooth (102T; 202T; 402T) defining at least part of a stator core, and a set of windings (102C; 202C; 402C) wound around the stator core tooth. The stator includes a heat dissipation arrangement for facilitating dissipation of heat from the stator core during operation of the stator. By facilitating dissipation of heat generated or accumulated in the stator core during operation of the stator, the performance, efficiency and / or lifespan of the stator can be improved.

An insulated wire including a conductor and a resin coating layer covering a periphery of the conductor, wherein the conductor is an aluminum conductor surface-treated with CO2 plasma, and at least a portion of the resin coating layer in contact with the conductor includes at least one kind of a polyaryletherketone resin and a polyphenylene sulfide resin.

A pole cover is provided for receiving and guiding a winding on a rotor of an electric motor, comprising multiple segments which extend in a radial direction to a center axis of the pole cover, wherein the segments receive a partial region of the winding of the electric motor, and wherein each of the segments includes a winding region to receive the winding and a segment connection region for connecting to other segments, wherein the winding region and the segment connection region border on each other and the segment connection region is situated closer to the center axis than the winding region. The segment connection regions extend at least partially in the circumferential direction about the center axis and each segment connection region protrudes, in the circumferential direction about the center axis, beyond the adjoining winding region. Multiple decoupling regions are also provided, each being situated between two segment connection regions in the circumferential direction about the center axis. An electric motor having such a pole cover and a method for producing a pole cover are also provided.

An electric motor includes a motor carrier and a stator secured to the motor carrier, as well as a rotor surrounding the stator. A coil or winding insulation is provided at least on the side of the stator facing away from the motor carrier. Contact pins are disposed in a receiving or mounting space of the stator, for contacting the stator winding thereof via connection contacts, and are guided into a carrier-side electronics compartment. The coil or winding insulation has an annular body on which functional elements are formed for holding, positioning and / or centering the contact pins and / or the connection contacts.

The invention provides polyester as well as a preparation method and application thereof, the polyester comprises a structural unit derived from an imide monomer and a connecting structural unit derived from a connecting structural unit monomer, and the polyester is obtained by mixing and reacting a reaction raw material of the imide monomer and the connecting structural unit monomer; reaction raw materials of the imide monomer comprise acid anhydride and an amino compound, and the imide monomer comprises terminal hydroxyl or carboxyl. The polyester provided by the invention does not need to add extra solvents during preparation, is environment-friendly and low in preparation cost, and is beneficial to reducing the viscosity of the polyester and improving the heat resistance of the impregnating varnish.

A stator includes: a stator core having an annular shape, a coil, and a cover member having a cylindrical shape. The stator core includes a plurality of teeth portions that are aligned in a circumferential direction and a plurality of slots that are formed between the teeth portions which are adjacent to each other in the circumferential direction. In the coil, a plurality of conductor wire portions are wound around each of the teeth portions through the slots. The cover member is arranged to be inserted into an inner circumferential portion of the stator core such that an outer circumferential surface faces an opening on an inside in a radial direction of the plurality of slots. A foamable insulation member that covers an outer surface of the plurality of the conductor wire portions of the coil and is bonded to the outer circumferential surface of the cover member through the opening of the slots is loaded in each of the slots.

The invention discloses a large-bore high-density joint motor for a humanoid robot, which comprises a stator and a rotor, and is characterized in that the rotor comprises a hollow shaft and magnetic steel surface-mounted on the outer wall of the hollow shaft; the stator comprises a stator core outside the magnetic steel, insulating end plates are arranged at the two ends of the stator core, windings are arranged at the outer ends of the insulating end plates, a leading-out wire is arranged at the outer end of one winding, a thermal resistor is arranged on the winding, and a temperature sensor of the thermal resistor is embedded in the winding; by arranging the thermal resistor on the winding, the temperature can be monitored at any time, so that the load of the motor can be adjusted according to the monitored temperature, the influence on normal operation caused by overhigh temperature rise of the motor is prevented, the diameter of the rotor is increased and the crack ratio is increased by arranging the inner cavity of the hollow shaft into a large inner hole structure and matching the pole slots of the stator and the rotor to adopt 18 slots and 20 poles, and the reliability of the motor is improved. The magnetic conduction thickness of the hollow shaft can be reduced by selecting multiple poles, and the purpose of reducing the weight of the hollow shaft is achieved.

Method for applying and foaming an electrically insulating foam structure onto a wire arrangement (100) for an active part of an electric machine, wherein the method comprises applying a thermoplastic coating polymer (110) to the wire arrangement (100), inserting the wire arrangement (100) into the active part, saturating the thermoplastic coating polymer (110) with carbon dioxide under defined temperature and pressure conditions, cooling the active part, lowering an ambient pressure of the active part, and increasing the temperature to form a foam structure such that the foam structure (100X) has electrically insulating properties.

The invention discloses a high-overload permanent magnet servo motor cooling structure with a phase change material and a method. The high-overload permanent magnet servo motor cooling structure comprises a casing, an end cover, a stator core, a permanent magnet, a rotor core, a rotating shaft, a rotor end cover and a stator winding, wherein phase change-epoxy resin composite encapsulating materials are arranged on two end surfaces of the stator core. The method comprises the steps of selecting an initial phase change material, then dividing a second layer of phase change material and a third layer of epoxy resin material to obtain composite material layers, then constructing a thermal network model, obtaining end temperature rise of the stator winding, changing selection of the phase change material, and repeating experiments to obtain an optimal phase change material. According to the structure, the influence that the size of the motor is increased due to filling of the phase-change material is avoided, temperature rise of the end of the stator winding under the high-overload working condition is effectively restrained, and the optimal phase-change material suitable for the structure is selected through multiple experiments.

The invention discloses a 12000-turn range extender generator for an electric aircraft, which adopts a mode of 24-slot and 20-pole inner rotor and radial insertion of seven-section rotor iron core skewed slot magnetic steel, and has the excellent performances of symmetrical magnetomotive force waveform, high winding coefficient, low torque ripple and cogging torque and no end ring current. The motor adopts a centralized winding, winding oil cooling and shell water cooling mode, and is suitable for a generator for a range extender of an electric aircraft.

The invention comprises a stator (1) for an electric motor, having a basic shape, wherein the basic shape consists of a one-piece insulating material (14) and the stator (1) has a first end region (5), a second end region (6), and a core region (7) arranged between the first end region (5) and the second end region (6), wherein electrical lines (4) for coil windings are embedded in the insulating material (14), wherein the electrical lines (4) run essentially in the transverse direction (11) in the insulating material (14) of the first end region (5) and the second end region (6) and in the longitudinal direction (12) in the insulating material (14) of the core region (7), wherein the core region (7) has at least one sequence of alternatingly arranged first core layers (8) and second core layers (9) in the longitudinal direction (12),wherein the insulating material (14) is formed in the first core layer (8) as a column structure (10) and in the second core layer (9) as a surface structure (21), and wherein ferromagnetic material (13) for forming stator teeth (3) is arranged between the column structures (10) made of insulating material (14) in the first core layers (8). The invention further comprises a method (100) for producing a stator (1).

The invention relates to an equivalent modeling establishment method for a winding in a slot of an outer rotor permanent magnet synchronous motor. The method comprises the following steps: S1, obtaining winding parameters of the outer rotor permanent magnet synchronous motor; s2, performing equivalent treatment on copper, air, insulation and enameled wires existing in a single winding; s3, calculating a single equivalent heat conductivity coefficient; s4, stacking according to the single winding in the S2, and calculating the equivalent heat conductivity coefficient of the whole slot winding; and S5, carrying out equivalence on the equivalent heat conductivity coefficient of the whole slot winding obtained in the step S4 and slot insulation again to obtain an equivalent slot heat conductivity coefficient of the whole model, and completing equivalent modeling of the winding in the slot of the permanent magnet synchronous motor. The method has the advantages that materials, including copper, insulation, air, enameled wires and the like, of the winding in the groove are equivalent to the variable-heat-conductivity-coefficient conductor, the heat conductivity coefficient and the heat flux density of the equivalent model are calculated, and meanwhile, the three-dimensional temperature field global simulation model is established, so that the transient temperature field distribution of the outer rotor permanent magnet synchronous motor is more accurate.

The invention discloses a high-heat-resistance polyimide enameled wire and a preparation method thereof. The high-heat-resistance polyimide enameled wire comprises a copper or aluminum wire and a polyimide insulating paint layer arranged on the wire, and the insulating paint layer is formed by immersing the wire into a polyamide acid solution containing cetyltrimethylammonium bromide modified ZrO2 powder for coating, and carrying out multi-stage heating treatment and heating curing. The CTAB modified zirconium oxide is used, and the CTAB modified ZrO2 powder is added for the first time to prepare the insulating paint layer of the polyimide enameled wire, so that the tensile strength and the heat resistance of the insulating paint layer in the enameled wire are effectively improved, the thermal decomposition temperature of the polyimide insulating paint layer can be increased to 520 DEG C, and the tensile strength can be increased to 88 MPa; and meanwhile, the insulating and flame-retardant properties of the enameled wire are improved, and the application scene of the polyimide enameled wire is expanded.

An electric machine (1, 1') comprises: a stator (10, 10'), a rotor (11, 11') rotatable relative to the stator (10, 10'), a machine control (16) configured to set the power output of the electric machine (1, 1') and in which a threshold value (T) is stored that determines a maximum adjustable power output during normal operation of the electric machine (1, 1'), a cooling system (12) for cooling the stator (10, 10') and / or the rotor (11, 11'), wherein the cooling system (12) is configured to continuously dissipate at least a maximum normal operating heat output that can be dissipated during normal operation of the electric machine (1, 1'), and an additional cooling system (13) with a reservoir (130) for receiving a consumable fluid (131) for cooling the stator (10, 10') and / or the rotor (11, 11') can be transferred to the stator (10, 10') and / or the rotor (11, 11').

Provided is an insulated wire provided with a conductor and a coating layer formed around the conductor, the coating layer being provided with: a fluororesin layer containing a melt-processable fluororesin; and a PAEK resin layer formed around the fluororesin layer and containing a polyaryletherketone (PAEK) resin, the coating layer having a thickness of 40 [mu] m to 300 [mu] m.

A related heating or cooling apparatus, namely a fluid circulator (100) for heating or cooling systems comprising: a body pump (1) having an impeller for moving the fluid; an electric motor (2) for rotating the impeller, the electric motor (2) comprising at least one electrical winding (21); at least one terminal (22) of an electrical power supply wiring of the electric motor (2); at least one electrical connection (5) between the terminal (22) and an end of the at least one electrical winding (21). The at least one electrical winding (21) is made of aluminum or alloys thereof, and the fluid circulator is provided with a protection element configured for sealingly enclosing the at least one electrical connection (5).

The invention provides a 10kV explosion-proof motor stator winding turn-to-turn insulation breakdown risk control method and system, and relates to the technical field of motor manufacturing, and the method comprises the steps: determining the existence of a turn-to-turn insulation defect through analyzing a creepage breakdown phenomenon in batch production, and positioning breakdown points which intensively appear at the head and tail turns of a lead end, obtaining a breakdown point position characteristic; based on the position characteristics of the breakdown points, main causes of insulation weakness are obtained through analysis; based on the main reason of weak insulation, a single-sided polyester film reinforced mica tape is selected as an inter-turn insulation material; and performing process verification on the turn-to-turn insulating material to obtain structural characteristic parameters of the insulating material. According to the method, the reliability and consistency of turn-to-turn insulation of the 10kV explosion-proof motor stator winding are improved through full-process control of data-driven defect diagnosis, material selection, process optimization, insulation strengthening and performance verification.

A resin composition for a stator, which is used for forming a sealing member in a stator including a stator core having a plurality of teeth parts and a plurality of slots that are alternately formed in a circumferential direction, a coil wound around the slot, accommodated in the slot, and having a pair of coil ends that each protrude over both sides from the stator core in an axial direction, and a sealing member provided by covering the coil in the slot, the resin composition for a stator including a thermosetting component, in which a cured product obtained by thermally curing the resin composition for a stator has a structure represented by Formula (1) and has an easily disassembling property. (In Formula (1), R1 and R2 each independently represent any of a hydrogen atom, a hydrocarbon group or aromatic group having 1 to 30 carbon atoms, a hydroxyl group, and an alkoxyl group having 1 to 30 carbon atoms.)

An insulating body assembly for a stator of an electrical machine and a method for manufacturing such an insulating body assembly are provided. The insulating body assembly comprises a disc-shaped insulating body with a flat contact and bearing surface, wherein the disc-shaped insulating body is arranged on an inner end face of the stator. Furthermore, a radially extending insulating body with radial and circular contact and bearing surfaces is provided, wherein the radially extending insulating body extends circumferentially around the stator and is adjacent to the disc-shaped insulating body.The insulating body arrangement is characterized in that the radially extending insulating body has a plurality of identical individual elements and engagement elements are formed at the ends of the individual elements, which interlock in such a way as to connect the individual elements to each other and to form a gap between the individual elements.

To avoid an increase in manufacturing cost of an electric motor, and increase the space factor of a winding portion while improving the reliability of a conductor wound in a first layer of the winding portion.SOLUTION: An electric motor manufacturing method performs: a first operation of winding a conductor from one end side to another end side of a winding drum in a radial direction of a yoke while leaving a gap between adjacent windings in a first layer; and a second operation of after the first operation, winding the conductor in the first layer so as to be in contact with the winding located at the other end, thereby moving at least a portion of the winding wound in the first operation toward the one end to close the gap.SELECTED DRAWING: Figure 15

An electric winding assembly includes a conductor core having a first end and an opposing second end, an insulation layer overlying the conductor core, and a conductive shield layer overlying the insulation layer. The conductive shield layer includes an insulative carrier circumferentially surrounding the insulation layer and a conductive layer disposed on the insulative carrier, the insulative carrier formed from a material having a thermal rating greater than 180° C., the conductive shield layer having a surface resistivity between 1.5 and 10 ohms per square.

The invention provides a method for manufacturing a stator coil of a generator stator coil notch anti-corona structure, and relates to the technical field of generator stator coils, the stator coil manufactured by the method has the advantages of simple anti-corona structure, convenient process and easy design and manufacture, the anti-corona effect at the notch of the coil can be improved, and the anti-corona effect of the notch of the coil can be improved. And by adopting the design of the multi-layer composite material, the corrosion resistance of the corona discharge structure is improved, the durability of the coil corona discharge layer is enhanced, the electric corrosion of the stator coil at the notch outlet is avoided, and the stability of the corona discharge performance of the stator coil is ensured.

The present application discloses a stator, a generator, a wind turbine generator set, and an anti-corona treatment method. The stator comprises an iron core and a winding; a plurality of mounting slots are distributed at intervals in the iron core in the circumferential direction; the winding is arranged on the iron core, and the winding comprises a plurality of branches; each branch comprises a plurality of coils; each mounting slot is internally provided with one coil; each coil has end parts protruding out of the iron core on the two sides of the iron core in the axial direction; at least one branch is provided with a potting layer, and the potting layer covers the end parts of some of the plurality of coils of the branches; and the working voltage of some of the coils when the generator works at a rated voltage is greater than a voltage anti-corona threshold.

A motor according to the present invention includes: a stator having a stator core and a coil; a rotor having a rotary shaft and a rotation body; a shaft bearing rotatably supporting the rotor; and a molding resin covering the stator. The motor has a coil end that is the coil protruding from the stator core in a shaft center X direction, and has a non-combustible layer provided to cover the coil end. The non-combustible layer is a metallic cover made of, for example, metal. The metallic cover is disposed to cover a periphery of a coil assembly in which the coil is formed on the stator core through an insulator. The metallic cover is integrated with the coil assembly by a molding resin.

An insulation sheet for a motor according to present invention includes a first resin film layer and a second resin film layer that is laminated on at least one surface of the first resin layer via an adhesive layer, in which the adhesive layer includes an acrylic polymer and a trimethylolpropane-tolylenediisocyanate trimer adduct, and has a gel fraction of 70% or less.

Heat dissipation of a busbar is improved even in a busbar unit that is integrated with an insulating resin. End portions of coils that are wound round teeth of a stator core of a stator are joined to joining portions (22U2, 22V2, 22W2) of busbars (22U, 22V, 22W) that are disposed adjacent to the stator core. The busbars (22U, 22V, 22W) include extending portions (22U1, 22V1, 22W1) that extend in the circumferential direction of the stator core. An insulating resin (24) is molded integrally with the busbars (22U, 22V, 22W). The extending portions (22U1, 22V1, 22W1) are partially exposed through the insulating resin (24). These exposed portions of the extending portions (22U1, 22V1, 22W1) are sealed in by a sealing resin (32) that is formed of a resin with higher thermal conductivity than the insulating resin (24).