8162results about "Windings conductor shape/form/construction" patented technology

To provide a technique for suppressing influences caused by the presence of a space communicating in a radial direction in a protruding portion, which protrudes from a stator core, in a stator coil.SOLUTION: A compressor 100 comprises a compression mechanism part 120 and a motor 200 which are stored in a sealed container 110. A stator 300 of the motor 200 includes a stator coil 340 wound around a plurality of teeth of a stator core 310. The stator coil 340 includes a first protruding portion 340A and a second protruding portion 340B protruding from the stator core 310 to a first side and a second side in an axial direction. At least outside of the first protruding portion 340A, a first enclosure wall 350 is provided which extends without a gap in the axial direction and a circumferential direction.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of test equipment, and specifically provides a flat wire continuous wave winding, a stator and a motor. The present invention aims to solve the problem of difficulty in production and easy damage caused by many welding spots of flat wire motors in the prior art. The flat wire continuous wave winding of the present invention includes an inlet terminal, an outlet terminal and an S-shaped wave winding located between the inlet terminal and the outlet terminal. The number of winding layers of the flat wire continuous wave winding is 2N, and the pitch is y. A jump winding part is provided at the junction of the Nth layer and the N+1th layer of the flat wire continuous wave winding. The pitch of each phase conductor group at the jump winding part is y+1, wherein N and y are both natural numbers greater than or equal to 1. The flat wire continuous wave winding of the present invention adopts a flat wire continuous winding scheme to reduce welding spots.

There is provided an intravascular blood pump for insertion into a patient's heart. The blood pump comprises a slotless permanent magnet motor contained within a housing, the motor having p magnet pole pairs and n phases, where p is an integer greater than zero, and n is an integer ≥3. The motor comprises a stator extending along a longitudinal axis of the housing and having 2np coils wound to form two coils per phase per magnet pole pair. The stator comprises inner and outer windings each comprising np coils electrically connected such that the current flowing through the coils is in the same direction, the coils of the outer winding arranged on an outer surface of the coils of the inner winding.

The invention discloses an equal-sectional-area high-slot-fullness-rate concentrated flat wire winding layout structure. The flat wire winding layout structure comprises a plurality of flat wire windings and a stator core with non-rectangular stator slots, each flat wire winding is wound on a respective stator core tooth part in the stator core and arranged in the same manner, and the width of each layer of flat wires of each flat wire winding is increased layer by layer from the narrower side to the wider side of the stator slot of the stator core. The thickness of each layer of flat wire is increased layer by layer from the wider side to the narrower side of a stator slot of the stator core, the total sectional area of each layer of flat wire is the same, and the wire ends of the flat wire windings are mutually connected at the end part of the motor. According to the invention, the slot fill factor of the flat wire winding in the non-rectangular slot can be effectively improved, the problem of low space utilization rate is solved, the efficiency and power density of the motor are further improved, the current densities at different positions of the conductor in the slot are basically the same, the insulation failure caused by too high local temperature rise is avoided, and the reliability of the winding can be effectively improved.

A stator for an electric machine includes a stator body having a large number of stator grooves, wherein, in each stator groove in the radial direction, a plurality of conductors are arranged one above the other. A plurality of spacing elements are configured to maintain a predetermined spacing between the conductors and a spacing of the respective conductors from a groove wall of the stator body, wherein, within the stator groove, respective cooling channels, which are at least partially delimited by the respective conductors, are kept free, whereby a cooling fluid can flow directly along the conductors, wherein each of the conductors has in the cross section thereof an angular form, and each of the corners of the angular form is supported by a respective spacing element against an additional conductor and / or the groove wall.

The invention provides a double-squirrel-cage permanent magnet motor with a fractional slot concentrated winding and a pole-changing switching method, the motor comprises a stator and a rotor, the stator comprises a stator winding design and a winding pole-changing switching method, and two groups of conducting bars are arranged on the outer circumferential side of the rotor. The two groups of conducting bars are respectively connected with the two end rings to form two independent double-squirrel-cage structures, and each conducting bar corresponds to a permanent magnet steel magnetic pole distributed in the circumferential direction of the rotor. Two groups of conducting bars are arranged on the outer side of the rotor, and the two groups of conducting bars are respectively connected with the two end rings to form two independent double-squirrel-cage structures. The independent double-squirrel-cage structure not only can filter specific-order magnetomotive force harmonics generated by a stator winding, but also greatly reduces the magnetic leakage phenomenon due to the position relation between the conducting bars and the magnetic poles of the permanent magnets, so that the blocking effect of the conducting bars on a permanent magnetic circuit is reduced to the minimum, the utilization rate of the permanent magnets is improved, and the cost is reduced.

The invention relates to the technical field of electromagnetic coils, in particular to a laminated special-shaped plane spiral coil winding. The laminated special-shaped planar spiral coil winding is composed of at least two coil layers, and each coil layer is composed of a single special-shaped planar spiral coil. The inner ring part of the special-shaped plane spiral coil is a concentric plane spiral coil, and the outer ring part of the special-shaped plane spiral coil is a tooth-shaped spiral coil extending along the outer periphery of the concentric plane spiral coil; all phases of the coil winding are different in layer, the electrified magnetic field center of each coil layer deviates from the geometric center, and the projection of the magnetic field center of each phase in the plane of the coil winding is in central symmetry distribution. The invention innovatively provides a laminated special-shaped planar spiral coil winding, and provides a squirrel-cage equivalent rotor on the basis of the laminated special-shaped planar spiral coil winding, so as to provide competitive choices for reducing copper loss and improving heat dissipation, magnetic conductivity, structural strength and economic cost of an axial flux motor winding.

The utility model relates to a heat dissipation structure of a linear motor based on a T-shaped vapor chamber, and relates to the technical field of heat dissipation of linear motors, the linear motor comprises a base, a stator and a rotor which are matched with each other are arranged on the base, and the rotor is connected with a sliding block and arranged on the stator through a linear guide rail. The rotor comprises T-shaped vapor chambers, heat conduction gaskets, rotor iron cores, windings, cooling water pipes, silicon steel sheets and liquid cooling plates, the windings are arranged on rotor iron core teeth, through holes are formed in the positions, between the adjacent windings, of the iron cores up and down, the T-shaped vapor chambers are vertically and symmetrically inserted into the iron core holes, and the surfaces of the lower ends of the T-shaped vapor chambers are attached to the adjacent windings; a heat conduction gasket is laid on the upper portion of the T-shaped soaking plate and connected with a liquid cooling plate with a built-in cooling water pipe, and the condensation end of the T-shaped soaking plate, the heat conduction gasket, the cooling water pipe and the liquid cooling plate are all arranged in a silicon steel sheet groove. According to the utility model, heat in the winding and the iron core can be uniformly distributed, and the heat dissipation efficiency of the linear motor is improved.

The invention relates to a multi-source system comprising an electric machine (M), of the type comprising a rotor and a stator (1), the stator (1) comprising a plurality of windings (10, 11, 12) made of turns of insulated conductive material, each winding (10, 11, 12) comprising a plurality of independently powered coils (100, 101, 102), characterised in that the system also comprises a plurality of DC power sources and a plurality of power electronics converters associated with different coils (100, 101, 102) of the electric machine (M), each power source powering one or more power electronics converters and each power source being connected to at least one coil (100, 101, 102) of each winding (10, 11, 12) of the electric machine (M).

The invention discloses a method for improving the cooling effect of a pole winding based on a mixed-flow fan, and belongs to the technical field of cooling of high-rotating-speed and high-capacity hydraulic generators and pumped storage generator motors. Mixed-flow fans are arranged at the two ends of a magnetic yoke, and cooling air is divided into radial cooling air for cooling coils at the ends of the magnetic poles and axial cooling air entering the outer surfaces between the magnetic poles. An interelectrode outer surface ventilation cooling space is formed between every two adjacent pole windings, interelectrode ventilation partition plates which are axially arranged are arranged in the interelectrode outer surface ventilation cooling spaces, and separated axial ventilation air channels are formed by the interelectrode ventilation partition plates and the outer surfaces of the pole windings; therefore, rotor pole winding cooling of a high-rotating-speed and high-capacity hydro-generator and a pumped storage generator motor in which radial ventilation cooling cannot be adopted in a pole winding interelectrode area is ensured, and the problem that the difference between the cooling effects of the windward side and the leeward side of a traditional structure is large is solved.

Some embodiments of the present disclosure provide an oil cooled motor heat dissipation structure and a motor. The oil cooled motor heat dissipation structure includes oil spray parts which are arranged at two ends of a stator core. An outside diameter of the oil spray part is not less than an outside diameter of the stator core, and the oil spray part is in contact with a case, an outer surface of the stator core, the case and the oil spray parts construct a cooling medium flow chamber, so as to facilitate the flowing of a cooling medium in the cooling medium flow chamber along the outer surface of the stator core. The oil spray part is provided with an oil spray channel. One end of the oil spray channel is communicated with the cooling medium flow chamber, the other end is communicated with a chamber inside the motor.

A system has an axial field rotary energy device with an axis, a printed circuit board (PCB) stator and a rotor with a rotor shaft and rotor disks having respective permanent magnets (PM). The rotor rotates about the axis relative to the PCB stator. A variable frequency drive (VFD) has VFD components coupled to the axial field rotary energy device. A device enclosure contains the axial field rotary energy device. A VFD enclosure contains the VFD, and the device and VFD enclosures are axially aligned and coupled to each other. A cooling system is integrated within the device and VFD enclosures and cools the axial field rotary energy device and the VFD. The cooling system has a cooling fan located axially outboard of the device and VFD enclosures. The cooling fan circulates an air flow radially and axially relative to the device and VFD enclosures.

An electric generator according to the present technology includes a coil element. The coil element includes a magnetic core and two or more windings. The magnetic core causes a magnetic flux change in an axial direction. The two or more windings that are each helically wound around the magnetic core in such a manner that each of the two or more windings is adjacent to the other winding in the axial direction of the magnetic core and are independent windings each capable of being electrically separated from the other winding.

The invention discloses a six-phase motor and a harmonic suppression hybrid winding design method thereof, and relates to the technical field of motors, and the method comprises the steps: obtaining a slot vector star diagram under six-phase current phase difference optimization based on a three-phase motor slot vector star diagram under the condition that the pole slot cooperation of the current motor meets the winding design requirement; based on the adjusted slot vector star graph and a coil pitch determined according to pole slot matching, a winding arrangement mode is designed under the requirement for balancing magnetomotive force amplitude; based on the designed winding arrangement mode, obtaining the current magnitude and phase of different terminals in each phase by introducing current with preset magnitude and phase; and determining the number of turns of each terminal in each phase under the constraint of a principle that magnetomotive force amplitudes generated by each coil are equal based on the current magnitude and the phase of different terminals in each phase. According to the invention, comprehensive suppression of stator magnetomotive force harmonics is realized through pole slot cooperation and six-phase current phase difference optimization in combination with a split-phase belt winding structure design.

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.

The invention relates to the technical field, provides a notch liquid cooling structure of a flat wire motor stator, and realizes high-efficiency and low-consumption motor stator cooling through an accurately-positioned full-coverage liquid cooling structure. In order to achieve the purpose, the motor comprises a stator iron core, closed iron core wire grooves are evenly distributed in the inner edge of the stator iron core, wires forming windings are inserted in the iron core wire grooves, the wires are tightly attached to the outer diameter ends of the iron core wire grooves, oil way channels are formed between the wires and the inner diameter ends of the iron core wire grooves, the two ends of the stator iron core are provided with end rings, and the two ends of the stator iron core are provided with end rings. The end ring wraps the wire, and the end ring and the oil path channel form a closed oil path space. Due to the adoption of the technical scheme, the oil path channel formed between the wire and the inner diameter end of the iron core wire slot is matched with the closed oil path space formed by the end ring and the oil path channel, and the position of the oil path channel is used for accurately cooling the wire with the highest heating.

The present application provides a stator core for cooling a winding end, a motor, a powertrain, and an electric vehicle. The stator core comprises a plurality of stator laminations, and the plurality of stator laminations are sequentially arranged adjacently in the axial direction of the stator core to form at least part of the stator core. Each stator lamination comprises a central hole and a plurality of cooling holes, and the cooling holes are arranged at intervals between the central hole and the outer peripheral surface of the stator lamination. The plurality of stator laminations comprise a first lamination and a second lamination arranged adjacent to each other, and each cooling hole of the first lamination is used for being communicated with one cooling hole of the second lamination and used for cooling a stator winding end so as to form a channel for a cooling medium to flow. In at least one direction of the radial direction or the circumferential direction of the stator core, each cooling hole of the first lamination is eccentrically arranged relative to one corresponding cooling hole of the second lamination communicated with the cooling hole of the first lamination. The stator core can reduce the cross-section of the channel for the cooling medium to flow and improve the flow speed of the cooling medium.

The invention discloses a torque system and suspension system decoupling method of a single-winding magnetic suspension permanent magnet synchronous motor, the motor adopts a suspension parallel single-winding structure, the torque system decouples suspension current, permanent magnets adopt consequent poles, and the suspension system decouples a rotor position angle; aiming at a current loop of the suspension system, regarding a coupling item of a torque system to the suspension system as disturbance, designing a sliding mode disturbance observer based on an improved superhelix algorithm, observing and compensating the disturbance, and realizing decoupling of the suspension system and torque control; aiming at the displacement / suspension force ring of the suspension system, designing a sliding-mode active-disturbance-rejection controller, observing the disturbance of the rotor displacement and compensating the suspension force to realize decoupling among different suspension degrees of freedom; the residual coupling factors of the torque system are regarded as system disturbance, and the disturbance is observed and compensated in real time by using a sliding mode-active disturbance rejection composite control method, so that decoupling of the residual coupling factors is realized. According to the invention, comprehensive decoupling of the torque system and the suspension system is realized.

An axial field rotary energy device includes housing sections, each with a ferromagnetic core having teeth. A printed circuit board (PCB) stator assembly is mechanically and thermally coupled to each housing section and has stator windows through which the teeth protrude. An external circumferential channel directs a flow of a liquid coolant. A first lobe is aligned with an adjacent first lobe on an adjacent housing section. The first lobes form a manifold to distribute the liquid coolant to the housing sections. A second lobe is aligned with an adjacent second lobe on the adjacent housing section. The second lobes contain conductors for electrical connections of the PCB stator assemblies. The device also has an air gap between each facing pair of the ferromagnetic cores. A rotor with a rotor disk is axially positioned in a center of each respective air gap and has magnets.

The invention relates to a stator of an electric machine, comprising a laminated core (3) on which stator teeth (4) and stator grooves (5) are formed. The stator teeth (4) are connected via a stator yoke (7), and a conductor (9) or a conductor bundle (10) comprising a plurality of conductors (9) is arranged in each stator groove (5) in order to form a stator winding (8), wherein each of the stator grooves (5) has a groove base (5.1) and a groove slot (5.2). Each stator groove (5) is equipped with a plurality of connection points (11) for supporting the conductor (9) or conductor bundle (10) lying in the respective stator groove (5). At least one groove gap that forms a groove gap channel (14) through which a coolant can flow along a cooling path (15) is formed between the walls of each stator groove (5) and the respective conductor (9) or conductor bundle (10), and each groove gap channel (14) is at least constricted at the connection points (11), whereinthe groove slot (5.2) of each stator groove (5) is closed by a groove closure (16),a respective bypass (18) is provided in each stator groove (5) at each of the support points (11) in order to conduct the coolant past the constricted support point (11) in the groove gap channel (14), andthe bypasses (18) at the different support points (11) of the same stator groove (5) are arranged at different radial positions such that a meandering cooling path (15) is formed in the stator groove (5).

The present disclosure provides a multi-excitation-source axial-flux permanent-magnet motor with partitioned, hierarchical, and variable poles, and a variable-condition driving control system. The motor mainly includes a main magnetic pole and an auxiliary magnetic pole. The main magnetic pole is responsible for providing a main air gap flux and is connected in series with a dual-stator magnetic circuit. The auxiliary magnetic pole is responsible for adjusting an air gap field and is connected in parallel with the dual-stator magnetic circuit. Magnetic fluxes of the main magnetic pole and the auxiliary magnetic pole together constitute the air gap field. The present disclosure can control a flux path of the auxiliary magnetic pole by controlling the magnitude of a current applied to a field winding, thereby adjusting an air gap flux, expanding a speed range of the motor, and achieving variable-condition operation of the motor.

A method of cooling rotor winding end turns extending from a rotor core includes coupling a collar to a rotatable shaft of the rotor core. The collar has a first wall confronting the rotor core, a second wall spaced from and opposing the first wall, a third wall between the first and second walls defining a set of apertures therethrough, a first cavity cooperatively defined by the first, second and third walls, having a first opening opposing the third wall, a fourth wall circumscribing the third wall, a second cavity cooperatively defined by the second, third and fourth walls, the second cavity defining a second opening opposing the second wall. The first and second cavities are in fluid communication, and the rotor winding end turns are receivable into the second cavity. The method includes directing a coolant into the first cavity, and delivering the coolant to the second cavity.

The invention provides a radially-arranged multi-phase multi-ring same-direction annular winding radial and axial magnetic flux permanent magnet motor, a winding form of a same-direction annular winding is adopted on a stator, the positive directions of coil currents at corresponding positions of adjacent stators of the motor are opposite, and an annular middleware iron core of a traditional multi-rotor structure motor with an annular winding is removed; furthermore, a disc type axial rotor is additionally arranged on the outer side of the radial flux motor, and magnetic poles on the disc type axial rotor are opposite in circumferential direction and radial direction. The radial and axial magnetic flux permanent magnet motor has the advantages that iron loss and eddy-current loss are reduced, the winding end part can be effectively utilized, and the output torque of the motor is provided.

The invention provides an axial magnetic flux motor. A stator structure of the axial magnetic flux motor comprises a stator supporting piece, a plurality of stator iron cores and two pole shoe cover plates. The stator supporting piece is provided with a plurality of accommodating grooves arranged along the circumferential direction, and the accommodating grooves penetrate through the stator supporting piece along the axial direction; the plurality of stator iron cores are correspondingly arranged in the plurality of accommodating grooves, each stator iron core comprises a coil winding and an iron core, the coil winding is provided with an iron core groove penetrating in the axial direction, the iron core is arranged in the iron core groove, the two ends of the iron core extend out of the iron core groove to form two extending ends, and the iron core is of a lamination structure adopting self-bonding silicon steel sheets; the two pole shoe cover plates are correspondingly arranged on the two sides of the stator supporting piece in the axial direction, a containing space for containing the multiple stator iron cores is formed between the two pole shoe cover plates, each pole shoe cover plate is provided with multiple through grooves formed in the circumferential direction, the positions of the multiple through grooves correspond to the positions of the iron cores of the multiple stator iron cores in a one-to-one mode, and the through grooves penetrate through the pole shoe cover plates in the axial direction. And the two extending ends of the iron core correspondingly extend into the corresponding through grooves of the two pole shoe cover plates.

The invention relates to a method for manufacturing a winding for a stator (1) of an axial flux machine with axially open stator slots (3) in which the winding can be inserted. The winding consists of winding wires or conductors (7) whose straight conductor legs (9) extend radially through the stator slots (3), wherein the straight conductor legs (9) are connected to each other by means of radially inner winding heads (11) and / or radially outer winding heads (11, 13). According to the invention, the winding is manufactured as a wave winding, in particular a continuous two-layer wave winding, in a winding process.

Embodiments of the disclosure provide a stator module and a conveyor system. The stator module includes a stator body and an armature winding, wherein the armature winding is fixedly arranged on the stator body, the armature winding is provided with an upper surface and a lower surface which are oppositely arranged in a first direction, and a first splicing surface and a second splicing surface which are oppositely arranged in a second direction perpendicular to the first direction, the armature winding is provided with a first protrusion, and the first protrusion protrudes from the first splicing surface in the second direction, wherein the armature winding is provided with a plurality of armature coils arranged periodically, and at least part of the plurality of the armature coils are arranged in the first protrusion.

A printed circuit board (PCB) has a dielectric substrate of fiber-reinforced polymer with opposite sides. Each side has channels formed by molding or machining the dielectric substrate. Conductive wires are inserted into the channels to define conductive traces.

The invention relates to an axial modular combined magnetic flux switching type linear rotating motor, which comprises a rotor assembly and a stator assembly, the stator assembly comprises a plurality of groups of stator units arranged circumferentially, and each stator unit comprises a plurality of stator modules, tooth-shaped permanent magnets connected among the stator modules and armature windings wound on the stator modules. The rotor assembly comprises a plurality of rotor modules, a plurality of rows of rotor teeth are arranged on the outer circumference of each rotor module, and the rotor teeth in the adjacent rows are distributed in a staggered mode. According to the invention, the mechanical dynamic performance is optimized while the energy conversion efficiency is maintained, the innovative stator system adopts a distributed module architecture, the fault-tolerant capability of the system is effectively improved through redundancy design, the modular construction not only simplifies the production process, but also is more beneficial to large-scale manufacturing, the mover part adopts a full-magnetic-conductive material topology, and the energy conversion efficiency is improved. The mechanical strength is ensured, meanwhile, light weight of moving parts is achieved, and the stability requirement under the high-speed operation working condition is met.

The invention discloses a tooth splicing type high-voltage and high-speed motor stator and a design method, the tooth splicing type high-voltage and high-speed motor stator comprises a stator yoke and stator teeth, the stator teeth are uniformly distributed along the inner circumference of the stator yoke, and a stator slot for installing a winding is formed between adjacent stator teeth; the stator teeth are of an axisymmetric structure, the side edge of each stator tooth comprises a first contour molded line, a second contour molded line, a third contour molded line and a fourth contour molded line which are sequentially arranged in the radial direction of the stator, and the first contour molded lines of the adjacent stator teeth form winding installation areas. According to the invention, the stator teeth are designed to be detachable through the splicing structure, the line insertion of the formed winding can be smoothly carried out in the winding installation area formed by the first contour molded line, the groove width of the customized teeth can be ensured, and the stator teeth can be conveniently inserted in the winding installation area formed by the first contour molded line. The cogging torque is reduced, and the rotor eddy current loss of the motor is reduced.

The present teaching relates to method and system for charging a rechargeable battery deployed in an electric apparatus. The system resides in the electric apparatus. The system comprises a motor, an inverter, an output rectifier, a configurator, and a controller. The motor comprises a stator having a plurality of stator teeth and a plurality of stator windings wounded on the plurality of stator teeth. The inverter comprises a plurality of power switch devices. The configurator comprises a plurality of contactors coupled with the plurality of stator windings and the plurality of power switch devices. The controller controls the plurality of power switch devices and the plurality of contactors, so as to configure the system to operate in one of a traction mode and a charging mode.