WO2018145807A1 - Enroulement d'une machine électrique présentant un degré de remplissage plus élevé - Google Patents

Enroulement d'une machine électrique présentant un degré de remplissage plus élevé Download PDF

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Publication number
WO2018145807A1
WO2018145807A1 PCT/EP2018/000042 EP2018000042W WO2018145807A1 WO 2018145807 A1 WO2018145807 A1 WO 2018145807A1 EP 2018000042 W EP2018000042 W EP 2018000042W WO 2018145807 A1 WO2018145807 A1 WO 2018145807A1
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WO
WIPO (PCT)
Prior art keywords
grooves
winding
stator
flat wire
groove
Prior art date
Application number
PCT/EP2018/000042
Other languages
German (de)
English (en)
Inventor
Markus SCHIEFER
Original Assignee
SciMo - Elektrische Hochleistungsantriebe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SciMo - Elektrische Hochleistungsantriebe GmbH filed Critical SciMo - Elektrische Hochleistungsantriebe GmbH
Priority to EP18705545.4A priority Critical patent/EP3580835A1/fr
Publication of WO2018145807A1 publication Critical patent/WO2018145807A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/227—Heat sinks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/22—Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
    • H02K9/223—Heat bridges

Definitions

  • the invention relates to a device for an electrical
  • Rotary field machines are powered by alternating currents, or alternating voltage, which have the same frequency and are shifted by a fixed phase angle to each other.
  • a rotating magnetic field is generated by arranging a number of coils corresponding to the number of alternating currents or alternating voltages spatially at fixed angles to one another, these angles corresponding as far as possible to the fixed phase angles of the supplying alternating currents or alternating voltages.
  • the ladder resp.
  • Coil windings which can be assigned to one of these coils are then generally referred to as belonging to this phase.
  • a machine with three phases one then speaks of a three-phase alternator.
  • a distributed winding unlike the concentrated winding, not every tooth pole is individually wound, but coils which comprise a plurality of tooth poles are introduced into the stator slots.
  • Statornut a groove to be understood, which is provided for filling with a winding with an electrically conductive wire or flat wire and milled in the stator, punched, laser cut, water jet cut, eroded and / or cut or each in a stator is milled, stamped, lasered, water jet cut, eroded and / or cut, in which case a flat wire is to be understood as meaning a wire whose cross section is essentially in a rectangle or square Edges may be at least partially rounded or bevelled. In other words, that a flat wire has a substantially rectangular or square cross section, wherein the edges of the cross section may have at least partially oblique or a rounding.
  • the flat wire may be at least one of
  • the wire or the flat wire is formed such that a short circuit is prevented at the contact points or surfaces during the winding of the wire or flat wire. That the wire may be at least partially coated with an electrically insulating material and / or electrically insulating material may be arranged between adjoining wire windings.
  • the Köntaktrac or surfaces between wire or flat wire and stator are with at least one of the above
  • the electrically insulating material comprises or is formed from at least one material from the group of electrically insulating materials, this group comprising: surface insulating materials, for example of plastic films such as polyimide, polyester,
  • Thermoplastics or other surface materials such as aramid paper,
  • Glass cloth or the like which is also e.g. can be soaked in resin. It is also possible to combine different films with different property profiles in so-called multi-layer insulation systems. This is useful if mechanically resistant layers protect another, electrically highly insulating layer on one or both sides. In addition to the flexible
  • Insulating materials can also be used preformed insulating materials from the group of ceramics, mica or thermosets.
  • coatings of the stator for example by powder coating, but also impregnation with resin or the omission of an additional surface insulation material.
  • the remaining between the stator slots areas are referred to as tooth or Zahnpol.
  • the invention relates to a stator with at least one winding or a flat wire winding.
  • flat wire windings increased fill levels can be achieved.
  • an increased degree of filling is understood that by means of the winding or flat wire winding, it is possible that the maximum available volume in the space provided. Grooves in the Statornuten completely or as completely as possible is used.
  • boosted refers herein to previous conventional solutions, such as windings with a round wire, in other words, by means of a winding or flat wire winding according to the invention, the volume provided for winding or flat wire winding in the stator slots should be completely or almost completely filled or used, in which case no or only a small number
  • the expense of segmentation and the electromagnetic disadvantage are very high.
  • WO 2007/146252 A2 discloses a method for achieving a high degree of copper fill with distributed winding, which can be used on a non-segmented stator core.
  • preformed copper rods are inserted with a rectangular cross-section through the grooves of a stator, formed on the opposite side and connected by a joining method, such as welding or crimping, conductive each other.
  • a joining method such as welding or crimping
  • the windings formed by this method have a high number of joints. Joints are characterized by inferior mechanical and electrical properties, as a continuous wire. Enough space is required for the production of the joints. For these reasons, this type of winding makes sense only if a small number of turns and large wire cross sections are used. However, large wire cross-sections in the radial groove direction lead to additional
  • EP 1 255 344 A1 discloses a method according to which a prefabricated winding of flat wires is introduced into a segmented stator. The insertion of the winding is only by subsequent or simultaneous joining the
  • Stator segments possible.
  • the joint of the stator segments can be performed by way of example by a dovetail joint.
  • the joining of segmented stator lamination leads to an additional air gap in the joint and often also to unwanted electrical connections between different metal layers of the laminated cores, caused for example by a slight axial misalignment or degree of joining. Additional air gaps lead to an increased magnetization current demand of the electrical steel sheet and electrical connections between the sheet metal layers to additional eddy currents.
  • CA 2539592 AI a method for inserting prefabricated coils of flat wire into the open slots of a stator core is disclosed.
  • Current displacement effects and eddy current losses in the flat conductors are minimized by the flat wires of the sinks are designed with their broader side to each other.
  • the slot slot In order to use the coils through the slot slot, the slot slot must be larger than the width of the coil, that is wider than the wider edge length of the flat wire cross section. The large utility slot severely restricts the machine design, leading to a
  • WO 2004/055 957 A1 discloses to embed a winding head in a thermally conductive material in order to achieve a good cooling connection to the cooled housing of the machine. However, no special shaping of the winding head is considered here.
  • EP 2 562 917 A1 discloses that the coils are wound in advance and inserted into the stator slots in the axial direction can.
  • the winding head shape is classic, with the difference that the winding head is bent on one side inwards (towards the rotor) to allow insertion into the grooves.
  • EP 2 782 220 A2 discloses a continuation of EP 2562917 AI.
  • the coils are also made here in advance and pushed axially into the stator.
  • the innovation in this disclosure is that the coils have less winding head length than in EP 2562917 AI and that the winding end sides of the coils form a flat surface.
  • the invention has for its object to provide a device which t winding a winding or Flachdra and a stator lamination of an electric machine or rotary electric machine or an electric motor, which makes it possible to achieve an increased degree of filling in the stator, with no or only a
  • the phrase "A has B”, “A includes B” or “A includes B.” may refer to the situation in which, apart from B, there is no other element in A (ie, a situation in which A consists exclusively of B), as well as the situation in which, in addition to B, one or more further elements are present in A,
  • At least one and “one or more” and grammatical variations of these terms when used in conjunction with one or more elements or features and intended to express that the element or feature may be single or multiple, typically only once used, for example, at the first introduction of the feature or element.
  • At a nachfol ⁇ constricting re-mention of the feature or element of the corresponding term "at least one" or “one or more” is not generally used, without limitation, the possibility that the feature or element may be one or more times provided.
  • Flat wire of two adjacent coil turns at least in a range of 50% up to . including 100% contiguous;
  • Coil winding at least in a range of at least 50% up to and including 100% adjacent to the face of the
  • winding and “flat wire winding” are used interchangeably in the present description and the claims.
  • device according to the invention is to be understood here as a device or an embodiment which at least has all the features according to the subject of the first independent claim or under the
  • a device comprises:
  • stator has at least one outer and an inner axially symmetric lateral surface, and at both ends of the hollow cylinder, in each case at least one final radially symmetric top surface, wherein the top surfaces face each other, and wherein the top surfaces in each case at least a first and a second radially symmetrical Have area; and wherein the stator has at least two grooves, wherein the grooves in each case in axial or oblique-axial
  • Flat wire winding formed from at least two coil turns by means of at least one flat wire, the coil turns are each free of joints, wherein the coil turns are stacked such that the flat wire of a coil winding in each case predominantly runs parallel to the surface wire of the adjacent coil winding or the adjacent coil turns, and the flat wire is formed by two adjacent coil turns respectively predominantly adjacent to each other; wherein the flat wire winding is at least partially inserted within the grooves such that the first coil turn is predominantly adjacent to the end face of the respective groove; and at least partially a region of the flat wire winding, which extends outside the grooves, along the second radially symmetric region is arranged, and predominantly parallel to j e election cover surface ' runs.
  • stator with beveled stator slots is formed in such a way that its stator plates are each slightly rotated about the axis of rotation of the stator relative to one another in the axial direction
  • the individual stator laminations are each rotated by a predetermined angle in a radial direction about the axis of rotation of the stator, which angle is in a range of more than 0 ° to about 5 °, or preferably in a range of
  • a stator By rotating the stator laminations to each other as described above, a stator is formed whose grooves extend obliquely axially either along its inner circumferential surface or along its outer circumferential surface. This allows torque ripples and noise excitations, but "but also many other effects caused by harmonic opposite stators are reduced with straight grooves and the harmonic content of the induced voltage, for example.
  • Slanting or axial skewing of the stator is half a slot pitch over the entire stator length Lstator.
  • the slot pitch is the distance between two slots.
  • a helix angle Q op t results over the complete length of the stator according to the formula (1):
  • sieche represents the number of sheets of a stator.
  • D B iech represents the thickness of the individual sheets of the stator.
  • Angle Q op t and ⁇ indicated For example, a lower range limit for Q op t and ⁇ disclosed in the 3rd row of the above table are for example are for example in the 2nd row of the table above.. Values for an upper range limit for Q op t and ⁇ specified.
  • the shape of the grooves is adapted to the flat wire such that in each case two mutually opposite sides of the flat wire are introduced adjacent to the respective two side surfaces of the grooves.
  • the range is between
  • the thermally conductive material comprises at least one material from the group of materials or is formed therefrom, said group comprising: potting compound, for example based on epoxy resin, silicone or polyester, wherein the potting compound for better thermal conductivity additives, such as ceramic powder, typically aluminum oxide or aluminum nitride, but also any other fillers in different forms with higher thermal conductivity than the potting material, eg. B.
  • potting compound for example based on epoxy resin, silicone or polyester
  • the potting compound for better thermal conductivity additives such as ceramic powder, typically aluminum oxide or aluminum nitride, but also any other fillers in different forms with higher thermal conductivity than the potting material, eg. B.
  • thermally conductive material may also be selected from the group of
  • the invention is based on a winding or flat wire winding with increased filling level, which avoids the aforementioned disadvantages of the prior art. That eg with regard to the o. g. EP 2 562 917 AI, that groove openings towards the rotor must be wider than wide
  • the coils are inserted, bent and welded at least once in each turn,. while in a device according to the invention at least two windings are provided without a joint, wherein the in the o.
  • a winding according to the invention is, for example, characterized in that it consists of flat wire so a conductor material with preferably approximately rectangular cross-section, wherein one edge length has a greater width than the second, the turns lie in the groove majority with the wider flat wire sides and the conductors into the grooves of a stator laminated core not segmented to facilitate wicking
  • stator laminated core having grooves whose, facing the rotating machine part, slot opening has a smaller width than the wider cross-sectional edge length of the flat wire and the flat wire for at least two coil windings has no joint.
  • the winding is additionally characterized in that in at least one phase individual windings are formed on a winding head such that the flat wire exits axially from a first groove and in the following spatial course along the flat wire initially to its wider
  • Cross-sectional edge is bent, then bent around its narrower cross-sectional edge, covers part of the way to a second groove, then bent around the narrower cross-sectional edge and after another bend around the wider
  • Cross-sectional edge enters the second groove.
  • a bend is defined as a change of direction of the wire greater than 45 ° in a section of wire shorter than five times the cross-sectional edge of the wire measured in the center of the profile.
  • An introduction of the winding in the grooves can be done for example by threading.
  • Winding head be formed so that it is thermally connected to a
  • Jacket cooling can be connected and the defined layer structure allows automated production.
  • the good thermal connection of the winding head takes place in that large parts of the winding head are spatially very close to a cooled housing wall enclosing the stator.
  • a good thermally conductive contact for example, by casting or
  • Impregnating the winding can be made.
  • the winding indicates at least two contiguous
  • Winding insert segmented stator lamination stack.
  • stator lamination stack is made of many
  • the stator or the laminated stator core has at least two grooves.
  • the slot opening is respectively or at least partially tapered by a tooth tip, so that the flat wire does not fit with its wider profile width. This is to be avoided, for example, that the groove opening is equal to the groove width, then a prefabricated winding can be inserted axially. In the event that the groove on the tooth head does not face the
  • Zahnkopf refers to a machine which just a taper of the groove in the region of the tooth head, as at the slot opening, opposite the having actual groove width. Air has a magnetic permeability that is small compared to iron. In the design of the machine, it is therefore desirable to distribute the tooth passed through a tooth tip over a wide area of the air gap. A machine with a pronounced tooth head thus usually has a higher torque than a machine without pronounced
  • Tooth head The absence of a pronounced tooth head usually leads to higher Zahnpulsations justifyen. Furthermore, in many cases by a pronounced tooth head the
  • Torque ripple of the machine can be reduced.
  • according to the invention comprises:.
  • At least one coil turn emerges from a groove in the axial direction. After emerging from the groove, the wire is bendable so that it runs in the radial direction away from the rotating machine part "rotor". In the case of an internal rotor
  • Radial flux machines are the most widely used machine construction methods In principle, however, the devices or embodiments according to the invention are also applicable to axial flow machines or can be formed as such, wherein The terms “axial” and “radial” must then be interchanged An alternative formulation for this would be, for example, that the rotor extends in a direction perpendicular to the wire path in the groove and perpendicular to the air gap away from the air gap.
  • the wire in the winding head has a further bend, through which it runs in a path which, concentrically (or parallel in the case of a linear machine) to the air gap.
  • the wire for the course up to the bend at the next groove outlet or groove entry lies predominantly in one plane and is predominantly free of rotation about its profile axis.
  • the groove has a rectangular except for the slot opening
  • the space between the winding head and the housing is filled with a good heat-conducting material.
  • Layers is guided to make the winding head axially shorter.
  • Devices can optionally additionally be provided at the axial ends in order to dissipate the lost heat of the last wound phase in the axial direction.
  • the winding of a rotary electric polyphase machine is characterized in that it consists of flat wire, ie a conductor material with approximately rectangular cross-section, wherein one edge length has a greater width than the second, the turns in the groove predominantly with the wider Flat wire sides lie on one another and the conductors are inserted into the grooves of a segmented laminated stator core which is not segmented to simplify the winding insertion, this stator laminated core having grooves whose rotating part
  • Machine part facing, groove opening has a smaller width than the wider cross-sectional edge length of the flat wire and the flat wire for at least two coil windings has no joint.
  • the winding is additionally, characterized in that in at least one phase individual windings are formed on a winding head such that the flat wire exits axially from a first groove and in the following spatial course along the
  • Flatwire is first bent around its wider cross-sectional edge, then bent around its narrower cross-sectional edge, travels a part of the way to a second groove, is then bent around the narrower cross-sectional edge and after another bend around the wider cross-sectional edge enters the second groove.
  • a bend is defined as a change of direction of the wire of more than 45 ° in a shorter section of wire measured in the profile center than five times the wider cross-sectional edge of the wire.
  • the space between the winding head and the housing with a heat-conducting for better heat dissipation
  • the windings in the winding head of a phase in several radial. Layers led to the
  • Winding head compared to the execution of the turns in the winding head of a phase with only one radial layer, shorter in the axial direction, that is, with a smaller axial projection of the entire winding head, which protrudes axially beyond the stator to make. This is possible if there is sufficient space for radial layers in the region of the yoke.
  • a first part of the äus the groove exiting coil turns, for example, in ' a radially only slightly smaller diameter than that
  • the respectively last-wound phase deviates from the winding diagram according to claim 1 in such a way that the winding in the area of the winding head takes a more direct route from the exiting to the re-entering groove
  • Winding head compared to the previously wound phases, both shorter in the axial direction, that is, with a, lower axial projection of the entire winding head, which protrudes axially beyond the stator, as well as shorter with respect to the path length of the
  • Winding head results, for example, when the windings are formed in an arcuate course from the exiting to the incoming groove and thereby have only small bends in the radial direction.
  • At least one device is optionally additionally provided at the axial ends in order to prevent the
  • the winding is characterized
  • the machine part facing away from, wide cross-sectional edge is bent, is bent around its narrower cross-sectional edge, covers part of the way to a second groove, then bent to the narrower cross-sectional edge and after another bend around the wider cross-sectional edge in the second groove
  • a bend is defined as a change of direction of the wire greater than 45 ° in a section of wire shorter than five times the cross-sectional edge of the wire measured in the center of the profile.
  • Fig. 1 is a schematic oblique view of an embodiment of a device according to the invention.
  • FIG. 2 is a schematic radial cross-sectional view according to FIG. 1 ;
  • Fig. 3 is an enlarged section of the schematic
  • Fig. 4 is a schematic axial cross-sectional view of a
  • Fig. 5 is a schematic axial cross-sectional view of a
  • FIG. 6 shows a schematic oblique view of an embodiment of a device according to the invention.
  • FIG. 7 is a schematic radial cross-sectional view of FIG. 6;
  • Fig. 8 is an enlarged detail of the schematic
  • Fig. 9 form two schematic side views of execution
  • Fig. 1 shows a schematic oblique view of a
  • the Device 100 has at least one segment-free stator or stator laminated core 110.
  • the stator 110 is according to a
  • the stator 110 has at least one outer axially symmetrical lateral surface 150 and an inner axially symmetrical lateral surface 160, and at both ends of the hollow cylinder, in each case at least one final one
  • top surface 120 radially symmetrical top surface 120, wherein these top surfaces are opposite and they each at least a first
  • the stator 110 has at least two grooves 130.
  • the grooves 130 each extend in an axial or oblique-axial direction from one cover surface 120 to the opposite cover surface (not visible) through the entire stator 110.
  • the grooves 130 extend from the inner circumferential surface 160 in the radial direction at least partially hineinerhoteln in the stator 110.
  • the grooves 130 each have at least two radially extending inner side surfaces and an inner end surfaces.
  • grooves 130 are formed in each case in the first radially symmetrical region 170, and the second radially symmetrical region 180 is free of grooves 130
  • Embodiment 100 are each tapered by means of at least one tooth tip.
  • the device 100 further comprises at least one
  • the device has, for example, two winding heads 190, wherein in each case the winding head 190 on each side of the stator 110 with a phase 195 or windings or
  • Flat wire windings 140 is formed, wherein a device according to the invention on more than two end windings 190 and more than one phase 195. To simplify the illustration and to illustrate the principle, in this case only a phase 195 was shown.
  • the flat wire winding 140 is formed in each case from at least two coil turns by means of at least one flat wire.
  • the coil turns are each free of joints.
  • the Coil windings are stacked one above the other in such a way that the flat wire of one coil turn runs in each case predominantly parallel to the flat wire of the adjacent coil turn or the adjacent coil windings and of two adjacent ones
  • Coil windings are each formed predominantly adjacent to each other.
  • the flat wire winding 140 is at least partially inserted within the grooves 130 in such a way that the first coil turn runs predominantly adjacent to the end face of the respective groove 130.
  • Flat wire winding 140 which extends outside of the grooves 130, along the second radially symmetric region 180 is disposed, and predominantly parallel to the respective top surface 120 and the second radially symmetrical region 180 of the respective
  • the first phase winding 140 in this case comprises six coils.
  • the second phase can be wound analogously to the first phase, only around the
  • FIG. 2 shows a schematic radial cross-sectional view 200 through the device 100 according to FIG. 1.
  • FIG. 2 shows a schematic radial cross-sectional view 200 through the device 100 according to FIG. 1.
  • Flat wire windings 140 fill, according to their adapted to the grooves 130 cross-section, the designated volume in grooves 130 completely or almost completely.
  • two tooth heads 230 are here each example arranged on both sides of the grooves 130, wherein optionally only one tooth tip 230 may be disposed on one side of the opening of the grooves 130.
  • the respective one tooth head 230 and the two tooth heads 230 respectively delimit the volume within the grooves 130 for the,
  • FIG. FIG. 2 shows a section through the stator lamination stack 110 "in the axial direction.
  • the laminated stator core 110 has grooves 110 into which the conductors or the electrically conductive flat wire 210 of the
  • Winding 140 are inserted.
  • Machine part is also referred to as slot slot.
  • FIG. 3 shows an enlarged section 300 of the schematic cross-sectional view of the device 100 according to FIG. 2.
  • the inner end face 330 of the grooves 130 are shown, along which each of the first flat wire 210, which extends within a groove 130, the first coil turn 220 of a winding 140 is predominantly adjacent. It is also shown in FIG. 3 that adjacent coil turns 220 of the winding 140 run predominantly parallel to each other.
  • the two radially extending inner side surfaces 310 and 320 are shown.
  • this enlarged section 300 shows that the shape of the grooves 130 are adapted to the cross section of the flatwire 210 such that it has the available
  • FIG. 4 shows a schematic axial cross-sectional view of an embodiment of a device 400 according to the invention.
  • FIG. 4 shows the axial section from the side through the stator 110, consisting of stator lamination packet 110, a housing 410 and
  • Cooling channels 420 are introduced. Cooling channels lead a cooling medium. About the surfaces in contact with the cooling medium there is a heat exchange.
  • a disk 430 which may be the same Groove geometry as the stator has, made of insulating material between stator lamination 110 and the winding heads 190 of the stator
  • Winding 140 or between different phases 195 may be arranged, wherein the insulating material comprises at least one material from the group of insulating materials and wherein the group comprises: kraft paper, Pertinax, multi-layer insulation, ceramic or plastic. The last or most recently wound or
  • Wound phase 440 can be wound in a simplified manner to shorten the length of the winding head 190.
  • the last wound phase 440 also forms a region where heat can be dissipated axially.
  • the winding heads of the last phase it is permissible that they cover all grooves from an axial point of view. From the axial point of view, grooves no longer have to be kept free for winding with another phase. Ideally, this circumstance is used to obtain the shortest possible winding heads and to obtain an axially flush termination of this winding, which can be connected by means of a thermally conductive material axially to another component.
  • FIG. 5 shows the detailed detail 500 of the device 400
  • the distance between winding 140 and housing 410 is small, ideally in the range of 0.01 mm to 1 mm. , whereby heat loss can be dissipated by a heat conductive material 510, wherein the heat conductive material 510
  • the group of thermally conductive materials comprising: potting resins for example
  • Fillers are filled.
  • An example of this is the filling with alumina ceramic powder.
  • Fig. 6 shows a schematic oblique view of a
  • the Device 600 has at least one segment-free stator or stator laminated core 110.
  • the stator 110 is according to a
  • the stator 110 has at least one outer axially symmetrical lateral surface 150 and an inner axially symmetrical lateral surface 160, as well as at both ends of the hollow cylinder, each at least one final
  • the stator 110 has at least two grooves 130.
  • the grooves 130 each extend in an axial or oblique-axial direction from one cover surface 120 to the opposite cover surface (not visible) through the entire stator 110.
  • the grooves 130 extend at least partially into the stator 110 from the outer lateral surface 150 in the radial direction.
  • the grooves 130 each have at least two radially extending inner side surfaces and a
  • grooves 130 are formed in each case in the first radially symmetrical region 170, and the second radially symmetrical region 180 is free of grooves 130
  • Embodiment 600 are each tapered by means of at least one tooth tip.
  • the device 600 further comprises at least one
  • the device thus has, for example, two winding heads 190 in this disclosed embodiment, with the winding head 190 on each side of the stator 110 of a phase 195 consisting of six coils being shown here by way of example.
  • Windings or flat wire windings 140 is formed, wherein a device according to the invention can also have more than two winding heads or more than six or less than six coils or windings or flat wire windings.
  • the flat wire winding 140 is formed in each case from at least two coil turns by means of at least one flat wire.
  • the coil turns are each free of joints.
  • the coil turns are stacked one above the other such that the flat wire of a coil turn respectively
  • the flat wire winding 140 is at least partially inserted within the grooves 130 such that the first Coil winding predominantly adjacent to the end face of the respective groove 130 extends. Wherein at least partially a portion of the flat wire winding 140, which outside of the grooves 130th
  • the stator lamination stack 110 in whose slots 130 the winding 140 of the first phase, with in this case by way of example ten turns, is inserted, likewise fewer or more than ten turns being possible.
  • the first phase winding 140 in this case comprises six coils.
  • the second phase can be wound analogously to the first phase, only around the
  • the device 600 is formed such that a rotor can be disposed outside the device 600.
  • FIG. 7 shows a schematic radial cross-sectional view 600 through the device 600 according to FIG. 6.
  • Flat wire windings 140 fill, according to their adapted to the grooves 130 cross-section, the designated volume in grooves 130 completely or almost completely. In the region of the openings in the interior of the stator 110, i. in the area of the inner
  • the lateral surface 160, two tooth heads 230 are here each example arranged on both sides of the grooves 130, wherein optionally only one tooth tip 230 may be disposed on one side of the opening of the grooves 130.
  • the one tooth head 230 and the two tooth heads 230 each delimit the volume within the grooves 130 for the
  • FIG. 7 shows a section through the stator lamination stack 110 in the axial direction.
  • the laminated stator core 110 has grooves 110 into which the conductors or the electrically conductive flat wire 210 of the
  • Winding 140 are inserted.
  • Machine part is also referred to as slot slot.
  • Fig. 8 shows an enlarged detail 800 of the schematic cross-sectional view of the device 600 according to FIG. 7.
  • the inner end face 330 of the grooves 130 are shown, along which each of the first flat wire 210, which extends within a groove 130, the first coil turn 220 of a winding 140 is predominantly adjacent. It is also shown in FIG. 8 that adjacent coil turns 220 of the winding 140 run predominantly parallel to one another.
  • the two radially extending inner side surfaces 310 and 320 are shown.
  • this enlarged section 800 shows that the shape of the grooves 130 are adapted to the cross section of the flat wire 210 such that it has the available
  • Fig. 9 shows two schematic side views of two
  • Devices 900 and 1000 are formed by means of at least two or more than two stator plates whose. Grooves 130 are formed on the outer surface 150 of the stators 110 and extend into the stators and extend completely axially along the axis of rotation of the stators 110.
  • the grooves 130 of the device 900 and 1000 may also each on the inner circumferential surface 160 according to any of the above-described devices 100 to 500.
  • device 900 has grooves 130 which extend parallel and straight as well as completely axially along the axis of rotation of the stators 110.
  • Device 1000 grooves 130 which are completely inclined axially along the axis of rotation of the stators 110 extend.
  • Stator laminated core 110 is formed, an inventive
  • Embodiment of the device 1000 grooves 130 defined or is to be understood by which does not extend over the entire length of the stator 110th and stator lamination uniformly parallel to the axis of rotation of the stator 110, but parallel to each other and rotated along the axis of rotation.
  • Stator slots 130 is formed such that its
  • Rotation axis of the stator 110 are rotated relative to each other. Ie. in other words, the individual stator laminations are mutually spaced by a predetermined angle in a radial direction
  • Rotated rotation axis of the stator said angle is in a range of more than 0 ° up to about 5 ° or preferably in a range of about 0.008 ° to about 5 ° or
  • angles can also be expressed by means of the formula (1). and / or the formula (2) which are described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne un dispositif (100) présentant : au moins un stator (110) comportant deux surfaces de recouvrement (120), le stator (110) présentant au moins deux encoches (130) qui s'étendent à l'intérieur du stator chacune en direction axiale ou axiale-oblique à partir d'une surface de recouvrement (120) jusqu'à la surface de recouvrement opposée (120) en traversant la totalité du stator (110) et pénètrent en direction axiale dans le stator (110) et présentent une surface frontale (330) placée à l'intérieur ; et au moins un enroulement de fil plat (140) constitué d'au moins deux spires (220) d'un fil plat (210). Lesdites spires (220) sont superposées et agencées sans point de jonction de telle manière que le fil plat (210) s'étend respectivement en grande partie parallèlement au fil plat voisin (210) et qu'ils sont en grande partie adjacents l'un à l'autre. L'enroulement de fil plat (140) est introduit au moins partiellement dans les encoches (130) de telle manière que la première spire (220) est en grande partie adjacente à la surface frontale (330) de l'encoche concernée (130) et qu'au moins une partie de l'enroulement de fil plat (140) qui est agencée hors des encoches (130) est disposée dans une partie (180) dépourvue d'encoche et s'étend en grande partie parallèlement à la surface de recouvrement concernée (120).
PCT/EP2018/000042 2017-02-07 2018-02-01 Enroulement d'une machine électrique présentant un degré de remplissage plus élevé WO2018145807A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18705545.4A EP3580835A1 (fr) 2017-02-07 2018-02-01 Enroulement d'une machine électrique présentant un degré de remplissage plus élevé

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DE102017102314.3A DE102017102314A1 (de) 2017-02-07 2017-02-07 Wicklung einer elektrischen Maschine mit gesteigertem Füllgrad
DEDE102017102314.3 2017-02-07

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WO2018145807A1 true WO2018145807A1 (fr) 2018-08-16

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DE102021003942B4 (de) 2021-07-29 2023-05-11 DeepDrive GmbH Stator für eine Radialfluss-Doppelrotormaschine, Radialfluss-Doppelrotormaschine und Verfahren zur Herstellung eines Stators für eine Radialfluss-Doppelrotormaschine

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EP1255344A1 (fr) 2001-05-02 2002-11-06 Chun-Pu Hsu Dispositif avec un stator avec bobines plates à hautes performances
WO2004055957A1 (fr) 2002-12-13 2004-07-01 Siemens Aktiengesellschaft Moteur electrique comprenant un rotor et un stator dote de gorges, et enroulement destine a un moteur electrique
US20040178691A1 (en) * 2003-03-14 2004-09-16 Hitachi, Ltd. Stator and rotary electric machine with the stator
DE102004050824A1 (de) * 2003-10-20 2005-05-25 Kabushiki Kaisha Toyota Jidoshokki, Kariya Kabel zur Wicklung einer Spule und Wicklungsträger
CA2539592A1 (fr) 2003-11-24 2005-06-02 Tm4 Inc. Machine dynamoelectrique et procede pour monter des bobines pre-enroulees sur cette machine
WO2006080465A1 (fr) * 2005-01-28 2006-08-03 Mostec Inc. Bobine, unite de bobine, stator et rotor
US20060244336A1 (en) * 2005-04-28 2006-11-02 Denso Corporation Electric motor with minimized cogging and related method of determining stator pole geometry
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EP2226923A1 (fr) * 2009-03-03 2010-09-08 Converteam Technology Ltd Bobines
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EP2562917A1 (fr) 2010-04-19 2013-02-27 Toyota Jidosha Kabushiki Kaisha Moteur et procédé de production du moteur
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US20150364977A1 (en) 2013-01-22 2015-12-17 Toyota Jidosha Kabushiki Kaisha Stator, stator manufacturing method, and rotary electric machine
EP2782218A2 (fr) * 2013-03-19 2014-09-24 Kabushiki Kaisha Yaskawa Denki Bobine, machine éléctrique tournante et procédé de fabrication associé
EP2782220A2 (fr) 2013-03-19 2014-09-24 Kabushiki Kaisha Yaskawa Denki Un composant enroulé, une bobine, une machine électrique tournante et procédé de fabrication d'un telle bobine
EP3043456A1 (fr) * 2015-01-06 2016-07-13 Micamation AG Procédé de fabrication d'un élément de stator ou de rotor pour une machine électrique

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Publication number Priority date Publication date Assignee Title
US11489393B2 (en) * 2019-01-04 2022-11-01 Hyundai Mobis Co., Ltd. Stator assembly of hairpin winding motor

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DE102017102314A1 (de) 2018-08-09
EP3580835A1 (fr) 2019-12-18

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