[go: up one dir, main page]

WO2019072471A1 - Stator pour une machine électrique - Google Patents

Stator pour une machine électrique Download PDF

Info

Publication number
WO2019072471A1
WO2019072471A1 PCT/EP2018/074480 EP2018074480W WO2019072471A1 WO 2019072471 A1 WO2019072471 A1 WO 2019072471A1 EP 2018074480 W EP2018074480 W EP 2018074480W WO 2019072471 A1 WO2019072471 A1 WO 2019072471A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
sub
winding
starting point
leg
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2018/074480
Other languages
German (de)
English (en)
Inventor
Stefan Reuter
Carsten Dotzel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of WO2019072471A1 publication Critical patent/WO2019072471A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/50—Fastening of winding heads, equalising connectors, or connections thereto

Definitions

  • the invention relates to a stator for an electric machine.
  • Stators are used in a variety of electrical machines. Demands on electrical machines are usually made in terms of torque and power. The power and torque of an electric machine depend on an applied voltage and available current. However, the applied voltage is often a "fixed" parameter, which results from the available battery voltage.To be able to realize high outputs, the flowing current can be increased.This usually requires a large line cross section, based on a total line cross section Winding the stator to "carry" the current can.
  • Such a stator is known for example from US 2015/0076953 A1.
  • connecting wires are designed as so-called hairpins.
  • the Ver- Bonding of the connecting wires is complex.
  • the connecting wires are designed on a twisting side as special pins in order to enable an orderly contacting.
  • several layers of connecting wires would have to be arranged one above the other. The space required for the stator is therefore relatively large.
  • the stator for an electric machine comprises a laminated core which has a plurality of grooves.
  • a winding is arranged in the grooves of the laminated core.
  • the winding comprises at least a first sub-string with a first starting point and a second sub-string with a second starting point.
  • the first starting point of the first sub-string is offset from the second starting point of the second sub-string in the circumferential direction by an angle.
  • this may make it possible to provide a wiring concept that allows any number of sub-strings to be formed in a stator.
  • a ratio between a total cross section of the winding and individual cross sections of conductor sections, which form the overall cross section of the winding can be improved. This may be possible, for example, because a number of the parallel sub-strands and a number of layers of the winding can be increased. For example, a large overall cross section of the winding may be desired to increase power of the electric machine.
  • the laminated core can serve, for example, each component which is designed to receive the winding.
  • the laminated core may be formed as a circular cylindrical ring.
  • the ring may have on its radially inwardly facing side a plurality of regularly arranged grooves.
  • the grooves or a largest extent of the grooves can be arranged parallel to a rotation axis of the laminated core.
  • the grooves can be closed radially outward. In the circumferential direction, two directly adjacent grooves can be delimited from each other by a partition wall.
  • the laminated core can have more than 50, for example 54 or 72 grooves. Eventually, the laminated core can be formed one or more parts.
  • the angle by which the first starting point is spaced from the second starting point may, in some embodiments, be greater than an angle including one, two, three, four, or five directly adjacent grooves.
  • Two directly adjacent components for example two directly adjacent grooves, are arranged, for example, such that no further groove or another identical component is arranged therebetween.
  • Two starting points which are arranged at a distance from one another in the circumferential direction, can be arranged, for example, in the circumferential direction mechanically or geometrically spaced from each other.
  • the winding may be understood to mean any multilayer wiring arrangement in the stator that is configured to form south and north poles alternately circumferentially adjacent to one another when subjected to current or voltage.
  • a north pole via two directly adjacent grooves and a south pole also extend over two directly adjacent grooves.
  • a plurality of layers of the winding may be arranged.
  • a number of the layers may not be limited and may be evenly scalable. All grooves of the laminated core, for example, be filled with the same number of layers.
  • a starting point can be understood to mean any part of the winding which is designed to serve as an input for a voltage source.
  • the starting point can be directly connectable to a power connection.
  • the angle by which the first starting point is spaced from the second starting point may be 360 ° divided by the number of circumferentially spaced starting points. In some embodiments, this may enable the starting points to be arranged symmetrically or at least uniformly distributed relative to one another.
  • the winding comprises two, three, four, five or more sub-strands with circumferentially offset by the angle arranged starting points. In some embodiments, this can increase the overall cross section of the winding and thus the power of the electric machine with the stator.
  • the stator may have two, three, four, five or more starting points for sub-strands.
  • the stator or its winding may in some embodiments include any number of sub-strands.
  • two partial strands are arranged at each starting point. Under certain circumstances, this can increase the number of partial strands, the overall cross section of the winding and thus the power of the electrical machine.
  • a first sub-strand at the starting point can then be arranged, for example, from radially inward to radially outward, and a second sub-strand, which begins at the starting point, can then be arranged, for example, extending from radially outward to radially inward.
  • the first sub-string can be arranged in the circumferential direction in opposite directions to the second sub-string.
  • Each of the substrings starting at a common start point of a phase can be interconnected in parallel.
  • the stator may comprise, for example, power electronics.
  • the connections of the power electronics for all sub-connections can then, along the axis of rotation of the stator, be arranged on the same side of the stator.
  • the power connection can be realized, for example, via a cable harness, a plug-on power board or via connecting elements (jumpers) as an attachment.
  • the power electronics may, for example, be electrically connected to the ends of the connecting wires, for example the wire ends.
  • the winding may comprise three phases, for example U, V and W. At least one or each of the phases comprises at least two sub-strands. In some embodiments, as a result of a phase comprising at least two sub-strands, an overall line cross-section of the winding can be increased.
  • each phase may include or be formed by a plurality of sub-strands. The substrings within a phase and / or the substrings starting at a common starting point may be connected in parallel or in series with each other.
  • An electrical property of the stator, for example star, delta connection, of the phases can be achieved in some embodiments by the power connection formed as an attachment.
  • the starting points which are spaced apart from one another by the angle in the circumferential direction may, for example, only be starting points which belong to one phase.
  • a sub-string can, for example, run through all the layers of the winding.
  • a starting point of a sub-string may be, for example, at the radially outermost position, that is, for example, in the first position or in the radially innermost position, in a winding having six layers, in the sixth position.
  • the sub-string includes a plurality of arcs.
  • An arc includes a plurality of U-shaped connecting wires.
  • a connecting wire may include a first leg and a second leg, wherein the first leg and the second leg are spaced apart on an open side of the connecting wire and on a closed side a connector are connected together.
  • the first leg of the connecting wire is arranged in a first position n of the winding and the second leg in a position n + 1 of the winding.
  • a relatively simple construction of the sub-string can thereby be made possible. All partial strands of a winding of the stator can have the same number of arcs. All arcs may have the same number of bond wires.
  • connection point between two connecting wires can for example be referred to as contacting area.
  • the second leg of the first connecting wire is connected to the first leg of a second connecting wire.
  • the connection of the legs in the layers can for example be such that a partial displacement takes place in the form of a change in a twist angle of the legs in the tangential direction.
  • a shift of the Maisier Schemee between the individual connecting wires or arches can be made possible. This can be useful, for example, to avoid that several Maisier Schemee mechanically collide.
  • connection wires of the winding are in some embodiments arranged such that all open sides are arranged on a first side of the stator and all connection pieces are arranged on an opposite side of the stator along the axis of rotation. In some embodiments, this can make it possible that no additional connections, for example in the form of bridges, are necessary on the stator for the basic structure of the winding. Furthermore, it may possibly also be possible for the contacting regions to lie predominantly in one plane, both radially and axially. As a result, in some embodiments, a compact construction and a concomitant small space requirement can be achieved.
  • a length of the arc can be a ratio of a number of holes of the stator and a number of starting points of the stator. result. In some embodiments, this can be achieved by arranging and arranging all the arcs in an electrically symmetrical manner.
  • the length of the arc may, for example, relate to a circumference of the stator, for example how often the arc orbits the stator or the laminated core.
  • the number of holes may indicate how many slots per pole and phase are provided in succession.
  • the number of holes may be, for example, 1, 2, 3, 4 or 5.
  • a left and a right groove which are arranged directly adjacent, may be provided per pole for each phase.
  • a hole number of 3 a left, a middle and a right-hand groove, which are arranged directly adjacent, may be provided per pole for each phase.
  • the arc can run X times around the stator or the laminated core.
  • the first leg of a first connection wire is spaced about x slots from the second leg of the connection wire, and the first leg of another connection wire is spaced x + 1 slots from the second leg of the further connection wire or the second leg of the first connection wire. This may be the case, in particular, at a position where the arc overlaps in the circumferential direction with a starting point.
  • an interconnection jump may be performed. Due to the interconnection jump, in some embodiments it can be achieved that all slots of a pole are filled with the winding.
  • a Verschaltungssprung can for example be designed such that a leg of the connecting wire performs the Verschaltungssprung, instead of a right-hand groove in a left-hand groove or instead of a middle groove in a left-hand groove of a pole is arranged.
  • the winding may be electrically symmetric in some embodiments.
  • the interconnect jump may be accomplished via a shortened or extended winding step.
  • the arc can be arranged within a double layer of the winding.
  • a double layer comprises a first layer n of the winding and a second, directly adjacent layer n + 1 of the winding.
  • a position of the winding may, for example, describe a position of the leg of the connecting wire in the groove of the laminated core in the radial direction.
  • a connecting wire of a sheet is connected in series with the preceding connecting wire of the sheet and the subsequent connecting wire of the sheet. The free ends of the sheets, which are not connected to other connectors in the same double layer, constitute an end or beginning of the sheet.
  • the winding may comprise at least a first double layer and a second double layer directly adjacent to the first double layer, wherein the first double layer comprises two directly adjacent layers n and n + 1 and the second double layer comprises two layers n + 2 and n + 3.
  • a first sheet and a second sheet may be connected in series with each other.
  • such a symmetrical winding can be constructed. A start of an arc can therefore be recognized in a completely assembled stator, for example, in that the two legs of a connecting wire are arranged in a different double layer, as the two legs of a preceding connecting wire.
  • Embodiments also relate to an electric machine with the stator according to one of the preceding embodiments.
  • the figures show schematically the following views: a schematic representation of a stator according to an embodiment; a schematic representation of a stator according to another embodiment; a schematic representation of a conventional stator; different schematic representations of perspective views of a stator according to the embodiment of Figure 1 a in the manufacture of a winding of the stator ..; a schematic representation of a perspective view of a connecting wire, for a winding of a stator according to an embodiment; a schematic representation of a perspective views of a stator according to an embodiment with a winding of the stator of a phase; a schematic representation of an enlarged detail of Fig.
  • FIG. 6 a schematic representation of a stator according to an embodiment with a power connection; a schematic representation of a circuit diagram of a first sub-string at a first starting point of the stator according to the embodiment of Fig. 6; a schematic representation of a phase of the stator according to the embodiment of Fig. 6; Fig. 8c is a schematic representation of a section of a cut
  • 9a is a schematic representation of a circuit diagram of a second sub-string at the first starting point of the stator according to the embodiment of FIG. 6;
  • Fig. 9b is a schematic representation of a section of a cut
  • 10a is a schematic representation of a circuit diagram of a first sub-string at a second starting point in a stator according to the embodiment of FIG. 6;
  • Fig. 10b is a schematic representation of a section of a cut
  • 1 1 a is a schematic representation of a circuit diagram of a second sub-string at the second starting point of the stator according to the embodiment of Fig. 6 .;
  • Fig. 1 1 b is a schematic representation of a section of a cut
  • the stator 1 a shows a schematic representation of a stator 1 for an electrical machine according to an exemplary embodiment.
  • the stator 1 normally comprises three phases U, V and W.
  • U the schematic structure of a phase, for example U, will be described.
  • the other two phases can of course be constructed analogously.
  • the stator 1 comprises a laminated core 2 shown in FIG. 2, which has a plurality of grooves 3.
  • a winding 4 is arranged in the grooves 3 of the laminated core 2.
  • the winding 4 comprises at least a first sub-strand 5 with a first starting point 6 and a second sub-strand 7 with a second starting point 8.
  • the first starting point 6 of the first sub-strand 5 is circumferentially U at an angle ⁇ spaced from the second starting point 8 of the second sub-strand 7 arranged.
  • a further sub-string 9 and 10 is arranged.
  • the further partial strands 9 and 10 are shown radially inwardly of the partial strands 5 and 7.
  • the sub-strands 5 and 7 are arranged to extend inwardly from radially outward.
  • the current then flows in the partial strands 5 and 7 in a first direction.
  • the further sub-strands 9 and 10 are arranged such that they extend from radially inward to radially outward.
  • the current flows in the other sub-strands 9 and 10 in a second direction opposite to the first direction.
  • the interconnection of the sub-strands 5, 7, 9 and 10 can for example be such that the sub-strands 5 and 7 at the starting points 6 and 8 via a feed line 1 first be charged with voltage.
  • the sub-strands 5 and 7 are connected at their ends in each case with the second sub-string 9 or 10 of their starting point in series.
  • This series connection of the partial strands 5 and 9 or 7 and 1 0 is marked with the arrow 13.
  • a derivative 12 takes place in each case at the ends of the second sub-strands 9 and 10.
  • the further sub-strands 9 and 1 0 at the starting points 6 and 8 also omitted.
  • two or even four partial strands per phase can be provided by arranging the two mutually offset starting points 6 and 8.
  • the partial strands 5, 7, 9 and 10 can also be connected in parallel, as shown for example in FIG. 8b.
  • FIG. 1 b shows a schematic representation of a stator 1 - a for an electrical machine according to a further exemplary embodiment.
  • the stator 1-a is constructed substantially similar to the stator 1, but comprises a further, third starting point 14.
  • the winding 4 of the stator 1-a comprises not only the two start points 6 and 8 which are spaced apart in the circumferential direction U, but also a third, further starting point 14 at which a third sub-strand 15 begins.
  • a further sub-strand 16 is arranged in addition to the third sub-strand 15.
  • the interconnection of the individual sub-strands is analogous as described for the stator 1 of FIG. 1 a.
  • the three starting points 6, 8 and 15 are each spaced apart by the angle ⁇ .
  • the angle ⁇ 120 °.
  • the starting points may also be spaced apart from each other by a different angle.
  • the number of starting points per phase can specify the angular position of the starting points to each other.
  • the further sub-strands 9, 10 and 15 may also be omitted in some embodiments. As can be seen in the embodiment of FIG. 1 b, by providing a third starting point, three or six sub-strands per phase can be arranged. In further embodiments, not shown, four or eight partial strands per phase can be provided, for example, by a fourth starting point.
  • FIG. 1 c shows a schematic representation of a conventional stator 17 with a winding 18 which has only one starting point 19.
  • the winding diagram according to one of the exemplary embodiments may be used to produce electrical machines with the same characteristics, which have a smaller conductor cross-section and thus lower current displacement.
  • a halved conductor cross-section can result for the same groove.
  • the sub-strands must be doubled, otherwise a number of turns of the winding would double and thus the length of the sub-string.
  • the production of the winding 4 of the stator 1 of the embodiment of FIG. 1 a will be described with reference to FIGS. 2 to 5.
  • the winding 4 comprises the sub-strands 5, 7, 9 and 1 0 as already explained with reference to FIG. 1 a.
  • Each sub-string includes a plurality of arcs.
  • Each arc comprises a plurality of connecting wires 20.
  • the production of a first arc 29 of the first sub-strand 5 at the first starting point 6 will be explained with reference to FIGS. 2 to 4.
  • FIG. 2 a shows a schematic representation of a perspective view of the connecting wire 20, which can also be referred to as a hairpin, for the winding 4 of the stator 1.
  • the connecting wire 20 is substantially U-shaped and comprises a first leg 21 and a second leg 22.
  • the two legs 21 and 22 have sections 21 -a and 22-a, which are parallel to each other. are arranged one above the other. These portions 21 - a and 22 - a serve to be received in the axial direction along the rotation axis R overlapping in the grooves 3.
  • the legs 21 and 22 each have a contacting region 25 and 26.
  • the contacting regions 25 and 26 are also arranged parallel to each other and to the parallel sections 21 -a and 22-a.
  • the contacting portions 25 and 26 are connected to the parallel portions 21 -a and 22-a via a bending portion 27 and 28, respectively, so that the contacting portions 25 and 26 are arranged higher in the axial direction than the parallel portions 21 -a and 22-a.
  • the contacting portions 25 and 26 are outwardly viewed from a center axis M of the connection wire 20 opposite to the parallel portions 21-a and 22-a so that the contacting portions 25 and 26 are spaced further from each other than the parallel portions 21 -a and 22-a.
  • the laminated core 2 of the stator 1 is shown.
  • the laminated core 2 has an annular cross-sectional area with respect to its axis of rotation R.
  • the laminated core 2 On a radially inwardly facing surface of the laminated core 2, the laminated core 2 has the grooves 3, which are arranged parallel to the axis of rotation R.
  • the laminated core 72 includes grooves. In some other, not shown embodiments, the laminated core may also have a different number of grooves, for example, more or less, for example, 54.
  • the first leg 21 is arranged in a first groove 3-a and the second leg 22 of the connecting wire 20 in a second groove 3-b.
  • the second groove 3-b is spaced from the first groove 3-a in the circumferential direction U by nine grooves.
  • the first connecting wire 20 or its legs 21 and 22 have a winding step of nine.
  • the first connection wire 20 is arranged on the laminated core 2 such that the parallel sections 21 -a and 22-a overlap with the grooves 3 in the axial direction.
  • the connecting piece 24 protrudes beyond an axial extent of the laminated core 2 in the axial direction.
  • the bending sections 27 and 28 and the contacting regions 25 and 26 protrude beyond the laminated core 2 in the axial direction.
  • the parallel portion 21 - a of the first leg 21 of the first connection wire 20 is disposed at a radially outermost position of the groove 3 - a, which may also be referred to as the first layer of the winding 4.
  • the parallel portion 22-a of the second leg 21 of the first connection wire 20 is spaced from a radial end 29 of the groove 3-b. Between the radial end 29 of the groove 3-b and the parallel section 22-a of the second leg 21 of the first connecting wire 20, there is still room in the groove 3-b for receiving exactly one further leg of another connecting wire.
  • the parallel portion 22-a of the second leg 21 of the first connection wire 20 is arranged in a second layer of the winding 4.
  • the two legs 21 and 22 of the first connecting wire 20 can be twisted over the bending sections 27 and 28.
  • a connection with other connecting wires of the winding can be facilitated or made possible.
  • the widening of the ends may take place in front of the connecting wire is arranged on the laminated core or only when the connecting wire is already arranged on the laminated core.
  • a second connecting wire 20-a is disposed on the laminated core 2.
  • the connecting wire 20-a is identical to the connecting wire 20, as are all other connecting wires, which will be referred to hereinafter.
  • the arrangement of the second connection wire 20-a is substantially similar to the arrangement of the first connection wire 20.
  • the first leg 21 of the second bonding wire 20-a is disposed in a groove 3-c in the first layer.
  • the second leg 22 of the second connecting wire 20-a is disposed in a groove 3-d in the second layer.
  • the groove 3-b is spaced nine grooves from the groove 3-c in the circumferential direction U.
  • the groove 3-c is spaced nine grooves from the groove 3-d in the circumferential direction U.
  • the two connecting wires 20 and 20-a are each arranged in the same winding step.
  • a first contacting region 25-a of the second connecting wire 20-b is arranged in the circumferential direction U overlapping the second contacting region 26 of the first connecting wire 20.
  • the two contacting regions 25 and 26 can be electrically conductively connected to each other to connect the first connecting wire 20 and the second connecting wire 20-a in series.
  • Fig. 4 shows the laminated core 2, on which a complete sheet 29 is arranged.
  • the arc 29 comprises exactly six connecting wires 20, 20-a, 20-b, 20-c, 20-d, 20-e.
  • the connecting wires 20-b, 20-c, 20-d and 20-d are arranged substantially analogously to the connecting wires 20 and 20-a.
  • a contacting region 26-a of the second leg of the second connecting wire 20-a in the circumferential direction U overlaps with a contacting region 25-b of a first leg 21 of a third connecting wire 20-b.
  • the contacting region 26-b of the second leg 21 of the third connecting wire 20-b circumferentially overlaps with a contacting region 25-c of the first leg 21 of a fourth connecting wire 20-c.
  • the contacting portion 26-c of the second leg 22 of the fourth connecting wire 20-c circumferentially overlaps with a contacting portion 25-d of a first leg 21 of a fifth connecting wire 20-d.
  • the contacting portion 26-d of the second leg 22 of the fifth connecting wire 20-d circumferentially overlaps with a contacting portion 25-e of a first leg 21 of a sixth connecting wire 20-e.
  • the contacting region 26-e of the second leg 22 of the sixth connecting wire 20-d represents an end 31 of the arc 29.
  • the contacting region 25 of the first leg 21 of the first connecting wire 20 represents the beginning or starting point 6 of the arc 29 and thus also of the sub-strand 5 represents.
  • the contacting regions of the connecting wires, which are arranged in the first layer, are connected to the contacting regions of the adjacent th connecting wires, which are arranged in the second layer, electrically connected to each other, for example 29.
  • all the connecting wires 20 of the sheet 29 are connected to each other in series.
  • the arc 29 thus runs counterclockwise along the laminated core 2 along and this one and a half times.
  • the sheet may have a different length with respect to the laminated core 2. Within the winding 4, however, all the sheets may have the same length. In general, the length of the sheet 29 relative to the circumference of the laminated core 2 can be expressed as follows.
  • an arc runs X times around the laminated core.
  • a starting point of the arc can make a Verschaltungssprung, for example in the form of a shortened or an extended winding step.
  • the X depends on a number of holes of the stator and a number of starting points. A number of holes is understood to be the number of slots provided directly adjacent to one pole per phase.
  • the slots may be provided as follows: 2-U, 2-V, 2-W, 2-U, 2-V, 2-W. etc. If a stator with a hole number of 2 has two starting points, then the arc rotates the laminated core once in total. First, the arc rotates one half of the laminated core, then a Verschaltungssprung, for example, from a right U-groove to a left U-groove performed (lost motion). The arc runs around the other half of the laminated core, then follows a Verschaltungssprung example of a left U-groove, for example, in position 2 in a left U-groove, for example, in position 3. Overall, each sheet can run once around the laminated core before a Jump in or out takes place.
  • the slots may be arranged as follows: 3- U, 3-V, 3-W, 3-U, 3-V, 3-W, etc. If the stator having the number of holes 3 is two Starting points, then the arc rotates the laminated core a total of 1 .5 times. First, the bow revolves the laminated core half a time, then a Verschaltungssprung from a right U-groove to a middle U-groove (lost motion). The arc continues to run halfway around the laminated core and again leads to an interlocking jump, for example from a central U-groove to a left U-groove (lost motion).
  • the arc rotates the stator a further half times before a renewed Verschaltungssprung, for example, from a left U-groove in layer 2 to a left U-groove in layer 3.
  • a renewed Verschaltungssprung for example, from a left U-groove in layer 2 to a left U-groove in layer 3.
  • each arc passes once around the stator before jumping in or out.
  • X (number of holes / number of starting points); where X is the length of the arc with respect to the circumference of the laminated core.
  • each bonding wire 20 to 20-e of the sheet 29 makes a jump from layer 1 to layer 2 to form the sheet 29.
  • a layer jump is made possible within the connecting wire 20 and at the contact point 25 and 26 between the connecting wires 20.
  • the two legs 21 and 22 of the connecting wires 20 are usually spaced by the same number of grooves 3, for example nine in the embodiment of the figures, as already for the legs in the grooves 3-a, 3-b, 3 c and 3-d.
  • a contact side such as the side on which the connecting pieces 24 are arranged, can be mentioned, and also a crown side or turning area side, as can be called the side on which the open ends 23 of the connecting wires 20 protrude.
  • a shortened winding step 30 is performed.
  • the second limb 22-c of the fourth connecting wire 20-c is only separated by eight times from the first limb 21 of the fifth connecting wire 20-d. th 3 spaced apart.
  • a shortened winding step 30 also takes place between the second leg 22 of the second connecting wire 20-a and the first leg 21 -b of the third connecting wire 20-b.
  • the winding steps 30 are shortened, the contacting regions 25 and 26 nevertheless overlap in the circumferential direction, so that an electrical connection is possible.
  • the bending portions 27 and 28 of the affected connecting wires 20 may be bent accordingly.
  • the shortened winding step 30 results in that all the grooves 3 of the phase can be filled.
  • the winding 4 would come again exactly to the starting point 6 and not all the grooves 3 of the phase of the laminated core 2 would be filled.
  • the winding 4 can be continued after a certain number of stator passes, so that the grooves 3 are operated next to the starting point 6.
  • a shortened and / or an extended winding step must be carried out so as not to block other connecting wires.
  • FIG. 5 shows a schematic representation of the laminated core 2 of FIGS. 2 to 4, wherein in addition to the first arc 29 of the first sub-strand 5, a second arc 32 of the second sub-strand 7 is arranged.
  • the second sheet 32 begins in the second starting point 8.
  • the sheet 32 is formed substantially analogous to the sheet 29, but rotates the laminated core 2 but opposite to a direction in which the first sheet 29 rotates the laminated core.
  • the beginning of the arc 32 in the starting point 8 forms the contacting region 25-f on a first leg of a first connecting wire 20-f.
  • the second leg of the first connection wire 20-f with the contacting portion 26- is arranged clockwise by eight slots spaced from the first leg of the connecting wire 20-f.
  • a shortened winding step 30 is performed at this point already.
  • the sheet 32 runs around the laminated core 2, analogously as for the sheet 29. written one and a half times and has as end 33 on the contacting portion 26-z of the second leg 22-z of the sixth connecting wire 20-z.
  • Each sheet 29 or 32 is disposed within a double layer. By this is meant that each sheet has only connecting wires which are arranged in the same two layers 1 and 2.
  • FIGS. 6 to 11b The production and construction of the partial strands will be described below with reference to FIGS. 6 to 11b.
  • a stator having a winding 4 which includes arcs that once circumnavigate the laminated core.
  • the stator of Fig. 6 to 1 1 and the winding 4 is analogous to the embodiment of FIGS. 2 to 5 constructed. Therefore, the same reference numerals are used.
  • FIG. 6 shows a schematic representation of the stator 1, in which two partial strands 5 and 9 and 7 and 10 are arranged for one phase, for example U at the two starting points 6 and 8 in each case.
  • the partial strands 5, 9, 7 and 10 are shown within the phase.
  • the partial strands 5, 9, 7 and 10 are arranged in a parallel connection in this embodiment.
  • Each substring includes three arcs. In other embodiments, not shown, a sub-string may also comprise a different number of arcs and / or the sub-strands of the phase may be connected in series.
  • the arrangement of the arcs in the sub-string is described as representative of the first sub-string 5 of the first starting point 6, with reference to FIGS. 6, 6a, 8a and 8c.
  • the contacting region 25 of the first leg of the first arc 29 shown in FIGS. 6 and 6a represents a beginning 34 of the first partial strand 5 in the first starting point 6.
  • the beginning 34 of the first partial strand 5 in the first starting point 6 is radially outward in the first Location arranged.
  • FIG 8a shows a schematic representation of a circuit diagram of the first sub-string 5.
  • the grooves are shown as a development of the stator 1 and in the y-direction, the layers of the winding 4 are shown.
  • a second arc 49 is assigned to the first starting point 6 radially within the first arc 29.
  • the first sheet 29 is disposed within the layers 1 and 2, which may also be referred to as the first double layer.
  • the second arc 49 is formed analogously to the first arc 29, but includes only connecting wires, which are arranged in a third and fourth position of the winding 4, which may also be referred to as the second double layer.
  • a beginning 44 of the second sheet 49 is arranged so that it can be connected in series with one end 43 of the sheet 29.
  • a first leg of the first connecting wire of the second sheet 49 may be spaced from the last leg of the first sheet 29 by, for example, a normal winding step of nine grooves 3 or a shortened winding step 30 of eight grooves.
  • the second sheet 49 terminates at a transition between the second double layer comprising the third and fourth layers and a third double layer comprising the fifth and sixth layers of the coil 4.
  • the first sub-strand 5 comprises a third arc 50 having only connecting wires arranged in fifth and sixth layers of the winding 4.
  • the third sheet 50 is connected in series with the second sheet 49.
  • the end 45 of the second arc 49 is connected to a beginning 46 of the third arc 50.
  • the end of the third arc 50 represents an end 35 of the first sub-strand 5 in the first starting point 6.
  • the end 35 lies radially inward in a sixth layer of the winding 4.
  • the first sub-strand 5 comprises six layers, three arcs and runs in the counterclockwise direction from radially outside to radially inside.
  • the joining of the sheets can be effected, for example, by means of an electrical connection to the contacting regions, for example brazing or welding can be used as the joining method.
  • the winding may also have further layers or double layers, for example, a fourth double layer.
  • FIG. 8 c shows a schematic representation of a section of a sectioned view of the stator 1, wherein only the first sub-strand 5 is superimposed at the first starting point 6.
  • the first sub-string 5 occupies only two directly adjacent grooves of the phase and only the odd layers 1, 3 and 5. The remaining layers of the two grooves and the adjacent grooves are filled by further partial strands and / or phases.
  • the further sub-strands 7, 9 and 10 are constructed substantially analogously and will be briefly described below with reference to FIGS. 6 and 9a to 11b with their differences.
  • FIG. 9 a shows a schematic illustration of a circuit diagram of the second sub-string 9 at the first starting point 6 in the stator 1.
  • a beginning 36 of the second sub-string 9 in the starting point 6 and an end 37 of the second sub-string 9 can be seen, as well as transitions of unspecified arcs between the double layers.
  • One end 37 of the second sub-string 9 is arranged radially outwardly in the first position.
  • the second sub-string 9 comprises six layers, three sheets and extends in a clockwise direction from radially inward to radially outward Shen.
  • FIG. 9b shows a schematic representation of a section of a sectioned view of the stator 1, wherein only the further sub-strand 9 is superimposed on the first starting point 6.
  • the further sub-string 9 occupies only two directly adjacent grooves of the phase and only the straight layers 2, 4 and 6.
  • the remaining layers of the two grooves and the adjacent grooves are filled by further sub-strands and / or phases ,
  • FIG. 10 a shows, analogously to FIGS. 8 a and 9 a, a schematic representation of a circuit diagram of the first sub-string 7 at the second starting point 8 in the stator 1. Also in FIG. 6, a beginning 38 of the second sub-string 7 in the second starting point 8 and the end 39 of the second sub-string 7 can be seen. In the first double layer of the sheet 32 is arranged. A beginning 38 of the first sub-string 7 in the second starting point 8 is arranged radially outward in the first position. One end of a third arc constitutes an end 39 of the first sub-string 7 of the second start-up The end 39 is radially inward in a sixth position of the winding 4. The first sub-string 7 comprises six layers, three arcs and extends counterclockwise from radially au Shen radially inward.
  • FIG. 10b shows a schematic representation of a section of a sectioned view of the stator 1, wherein only the first sub-string 7 of the second starting point 8 is superimposed.
  • the first sub-string 7 occupies only two directly adjacent grooves of the phase and only the odd-numbered layers 1, 3 and 5.
  • the remaining layers of the two grooves and the adjacent grooves are filled by further sub-strands and / or phases ,
  • FIGS. 8 a, 9 a and 10 a a schematic illustration of a circuit diagram of the second sub-string 10 at the second starting point 8 in the stator 1.
  • the beginning 40 of the second sub-string 10 in the starting point 8 and the end 41 of the second sub-string 7 and the transition of unspecified sheets in the double layers can be seen.
  • the beginning 40 of the second sub-string 10 in the second starting point 8 is arranged radially inward in the sixth position.
  • the end 41 of the second sub-string 10 is arranged radially au Shen lying in the first layer.
  • the second sub-string 10 comprises six layers, three sheets and extends in a clockwise direction from radially inward to radially outward Shen.
  • 1 1 b shows a schematic representation of a section of a sectioned view of the stator 1, wherein only the second sub-strand 10 of the second starting point 8 is superimposed.
  • the second sub-string 10 occupies only two directly adjacent grooves of the phase and only the straight layers 2, 4 and 6. The remaining layers of the two grooves and the adjacent grooves are replaced by further sub-strands and / or Phases filled up.
  • a power connection 48 shown in FIG. 7 can be used for the interconnection of the partial strands and / or the phases.
  • the power connection 48 can be electrically connected, for example, to the beginnings and ends of the double layers, that is to say to the contact regions 25 and 26 of the connecting wires.
  • all the beginnings and ends of the double plies may be on the same side.
  • te of the stator 1 may be arranged.
  • the phases V and W constructed analogously to the described phase U can also be connected to the power connection 48.
  • the sub-strands may also be arranged in a different winding scheme.
  • Each sub-string can for example be the same structure and / or go through the stator the same number of times.
  • Each sub-string occupies the grooves and layers identical in some embodiments, so that by the same position and grooves each sub-strand has the same electrical angle.
  • a large symmetry between the sub-strands and only minor circulating current losses can be achieved.
  • Each sub-string may for example be distributed over the entire circumference of the stator, in comparison to a loop winding, which may for example be geometrically limited to only a portion of the stator. This allows a Deachs réelle be achieved, which causes the individual sub-strands are loaded evenly.
  • Some embodiments relate to a stator with 3 phases (U, V, W), each phase corresponding to one strand.
  • Each strand consists of any number of substrings.
  • the winding of the stator comprises at least two starting points which are spaced apart by an angular range. All starting points have the same pole. In each starting point, at least one beginning of at least one sub-string of a phase is arranged.
  • Each substring has any number of bends.
  • An arc is formed on two successive layers, for example 1 + 2.3 + 4.5 + 6.7 + 8, etc.
  • Each arc comprises a plurality of connecting wires, which may also be referred to as hairpins, with two conductor legs, such as the legs of the Bonding wire can also be called, are arranged in two different position.
  • the three strings or phases can be interconnected as a star or a delta.
  • An interconnection of the substrings of a phase takes place in each case in a starting point.
  • the interconnection can be parallel or in series.
  • the procedure may be as follows. A partial strand, the radially au Shen begins (layer 1) ends radially inward (layer 6). Due to a meandering of layers 1 and 2 and then back again, either only even or odd layers, ie either layers 1, 3,5,7 etc. or 2,4,6,8 etc.
  • a second sub-strand can begin, which runs from radially inward (layer 6) to radially au Shen (Lagel).
  • This sub-string is constructed exactly equal to the first sub-string, except that a strand output and input are reversed and the winding is mechanically offset by an angle which corresponds exactly to a pole angle.
  • both partial strands can be connected in series at a starting point.
  • two sub-strands may be provided at a starting point in parallel or at two starting points one sub-strand or two sub-strands connected in series.
  • partial strands can be connected in series at three starting points.
  • partial strands can be connected in parallel at two starting points, or four starting points with series strands can be provided.
  • partial strands can be connected in series at five starting points.
  • partial strands can be connected in parallel at three starting points.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

Selon des exemples de réalisation, l'invention concerne un stator pour une machine électrique. Le stator (1) contient au moins un noyau feuilleté qui comporte une majorité de rainures. Un enroulement (4) est disposé dans les rainures du noyau feuilleté. L'enroulement (4) comporte au moins un premier faisceau partiel (5) doté d'un premier point de départ (6) et un deuxième faisceau partiel (7) doté d'un deuxième point de départ (8), ledit premier point de départ (6) du premier faisceau partiel (5) étant disposé dans la direction circonférentielle autour d'un angle espacé du deuxième point de départ (8) du deuxième faisceau partiel (7).
PCT/EP2018/074480 2017-10-12 2018-09-11 Stator pour une machine électrique Ceased WO2019072471A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017218202.4 2017-10-12
DE102017218202.4A DE102017218202A1 (de) 2017-10-12 2017-10-12 Stator für eine elektrische Maschine

Publications (1)

Publication Number Publication Date
WO2019072471A1 true WO2019072471A1 (fr) 2019-04-18

Family

ID=63557476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/074480 Ceased WO2019072471A1 (fr) 2017-10-12 2018-09-11 Stator pour une machine électrique

Country Status (2)

Country Link
DE (1) DE102017218202A1 (fr)
WO (1) WO2019072471A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019215097A1 (de) 2019-10-01 2021-04-01 Zf Friedrichshafen Ag Spulenelement für eine elektrische Maschine
DE102020001770A1 (de) 2020-03-17 2021-09-23 Daimler Ag Stator für eine elektrische Maschine
DE102020216151A1 (de) 2020-12-17 2022-06-23 Valeo Siemens Eautomotive Germany Gmbh Stator für eine elektrische Maschine und elektrische Maschine
DE102022208042A1 (de) * 2022-08-03 2024-02-08 Zf Friedrichshafen Ag Wicklung, Wicklungsanordnung und Komponente für eine elektrische Maschine
DE102022208032A1 (de) * 2022-08-03 2024-02-08 Zf Friedrichshafen Ag Wicklung, Komponente für eine elektrische Maschine und Verfahren zum Herstellen einer Wicklung
DE102022208037A1 (de) * 2022-08-03 2024-02-08 Zf Friedrichshafen Ag Wicklung, Wicklungsanordnung und Komponente für eine elektrische Maschine

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0881752A1 (fr) * 1997-05-26 1998-12-02 Denso Corporation Alternateur de véhicule automobile
EP1263118A2 (fr) * 2001-05-29 2002-12-04 Mitsubishi Denki Kabushiki Kaisha Alternateur pour véhicule automobile
US20070200449A1 (en) * 2006-02-10 2007-08-30 Denso Corporation Rotary electric machine and stator for rotary electric machines
US7994677B2 (en) * 2007-11-26 2011-08-09 Denso Corporation Stator for rotary electric machine, and rotary electric machine using the stator
US20120019081A1 (en) * 2010-07-20 2012-01-26 Denso Corporation Stator for electric rotating machine
US20150076953A1 (en) 2013-09-18 2015-03-19 Denso Corporation Stator for rotating electric machine
DE102015004576A1 (de) * 2014-05-28 2015-12-03 Sew-Eurodrive Gmbh & Co Kg Elektrische Maschine, insbesondere Drehstrommotor, und Verfahren zum Herstellen einer elektrischen Maschine mit einem Aktivteil, insbesondere Stator und/oder Rotor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH433504A (de) * 1958-07-18 1967-04-15 Nat Res Dev Polumschaltbare Dreiphasen-Rotationsmaschine
GB1152499A (en) * 1966-10-18 1969-05-21 Nat Res Dev Improvements in or relating to Rotary Electric Machines
DE10326095A1 (de) * 2002-06-12 2004-04-15 Denso Corp., Kariya Spule aus sequentiell verbundenen Segmenten für eine rotierende elektrische Maschine
JP3791471B2 (ja) * 2002-07-12 2006-06-28 株式会社デンソー セグメント順次接合ステータコイル型回転電機
JP3988617B2 (ja) * 2002-09-18 2007-10-10 株式会社デンソー セグメント導体接合型電機子及びこの電機子を備えた交流機
JP2017041948A (ja) * 2015-08-18 2017-02-23 マブチモーター株式会社 モータおよびモータの製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0881752A1 (fr) * 1997-05-26 1998-12-02 Denso Corporation Alternateur de véhicule automobile
EP1263118A2 (fr) * 2001-05-29 2002-12-04 Mitsubishi Denki Kabushiki Kaisha Alternateur pour véhicule automobile
US20070200449A1 (en) * 2006-02-10 2007-08-30 Denso Corporation Rotary electric machine and stator for rotary electric machines
US7994677B2 (en) * 2007-11-26 2011-08-09 Denso Corporation Stator for rotary electric machine, and rotary electric machine using the stator
US20120019081A1 (en) * 2010-07-20 2012-01-26 Denso Corporation Stator for electric rotating machine
US20150076953A1 (en) 2013-09-18 2015-03-19 Denso Corporation Stator for rotating electric machine
DE102015004576A1 (de) * 2014-05-28 2015-12-03 Sew-Eurodrive Gmbh & Co Kg Elektrische Maschine, insbesondere Drehstrommotor, und Verfahren zum Herstellen einer elektrischen Maschine mit einem Aktivteil, insbesondere Stator und/oder Rotor

Also Published As

Publication number Publication date
DE102017218202A1 (de) 2019-04-18

Similar Documents

Publication Publication Date Title
WO2019072471A1 (fr) Stator pour une machine électrique
DE112013003663B4 (de) Elektrische Rotationsmaschine
DE112017003789T5 (de) Elektrische Maschine mit einem Stator, der phasenverschobene Wicklungen hat
EP3695489B1 (fr) Stator pour une machine electrique
DE102016118871A1 (de) Spulenwicklung für Statoren oder Rotoren
EP3218994A1 (fr) Enroulement ondulé à couple de détente réduit, stator et machine électrique dotés d'un enroulement ondulé de ce type
DE10342755A1 (de) Rotierende Hochspannungselektromaschine
DE112007001411T5 (de) Anschlüsse und Verbindungen zwischen mehrfach segmentierten Haarnadelwindungen
DE102004004083A1 (de) Einlochwicklung-Statorwicklungseinheit für eine elektrische Rotationsmaschine
DE112018000146T5 (de) Elektrische Maschine mit einem Stator, der mehrere Anschlussdrähte hat, die von einer gemeinsamen Wicklungsschicht ausgehen
EP3836362B1 (fr) Enroulemen en épingle à cheveux d'un stator d'une machine électrique
DE102013215178A1 (de) Elektrische Maschine mit einfach oder doppelt geformter Windungsanordnung und Verfahren
EP3878076B1 (fr) Machine électrique
EP4143951B1 (fr) Stator pour une machine électrique, et machine électrique
DE102021214799B4 (de) Symmetrische Wicklungslayouts für Elektromotoren
DE112021005139T5 (de) Stator und motor
DE102022105154A1 (de) Motor
DE102022113053A1 (de) Motor
DE112021001638T5 (de) Stator mit inneren anschlüssen für wicklungsanschlussdrähte
DE112018000190T5 (de) Elektrische Maschine mit einem Stator, der mehrlagige Endschlaufen hat
EP3357141B1 (fr) Stator ou rotor, fabriqué selon un procédé de la technique d'insertion, d'une machine électrique avec une longueur de tôle raccourcie
DE19846923C1 (de) Mehrphasige Wicklung einer elektrischen Maschine und Verfahren zu ihrer Herstellung
DE102005018600A1 (de) Statorspule mit konzentrierter Wicklung für eine rotierende elektrische Maschine
DE102022108615A1 (de) Rautenspulen-stator mit parallelen pfaden und ausgeglichener wicklungsanordnung
DE102007022617A1 (de) Wechselstrommaschine mit einem Stator, auf den ein Leitungsdraht gewickelt ist

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18769152

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 18769152

Country of ref document: EP

Kind code of ref document: A1