CN211018442U - Stator for an electric machine - Google Patents
Stator for an electric machine Download PDFInfo
- Publication number
- CN211018442U CN211018442U CN201921742503.0U CN201921742503U CN211018442U CN 211018442 U CN211018442 U CN 211018442U CN 201921742503 U CN201921742503 U CN 201921742503U CN 211018442 U CN211018442 U CN 211018442U
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- 239000004020 conductor Substances 0.000 claims abstract description 84
- 238000004804 winding Methods 0.000 claims abstract description 34
- 230000017105 transposition Effects 0.000 description 7
- 230000007704 transition Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The utility model relates to a stator for electric machine has: a stator core including a plurality of stator slots arranged uniformly with each other in a circumferential direction of the stator in such a manner as to extend in an axial direction parallel to a stator axis; bar winding formed by a plurality of conductor segments arranged in stator slotsThe bar winding and P>1 electrical phase and SP ≧ 2 × P stator poles interconnected, the stator having N for each stator pole>1 stator slot such that for each stator pole a hole set is formed having a first slot position, a last slot position and, where appropriate, slot positions located therebetween, the conductor sections of the hole set of the first stator pole connected to the first phase being connected to the conductor sections of the second stator pole by means of clamps, which respectively have a clamp width in the circumferential direction which is at least ((P-1) × N +1) times the slot distance and at most (N-1+ N × P) times the slot distance, the sum of the clamp widths of the clamps being the slot distance (N: (N-1) × N +1)2P) times.
Description
Technical Field
The utility model relates to a stator for electric machine, especially for motor, this stator has: a stator core including a plurality of stator slots arranged in a manner extending in an axial direction parallel to a stator axis; and a bar winding arranged in the stator slots, the bar winding being formed of conductor segments, wherein the conductor segments are arranged in planes in the stator slots, the planes corresponding to different distances from the stator axis.
Background
Such rod windings for stators are also referred to as former windings and are formed from a plurality of prefabricated conductor segments which are introduced into the stator slots to form the rod windings and subsequently interconnected at the ends of the stator slots. In the sense of the present invention, a connection means an electrical contact. For this purpose, the conductor segments are usually connected to sub-wires, which form a closed loop around the stator. The interconnected ends of the conductor segments form what are known as winding heads.
In the stator slots of such stators, a plurality of conductor segments are usually arranged in each case, which conductor segments have different distances from the stator axis, i.e. are layered in a plurality of planes in the radial direction.
If the conductor segments in adjacent stator slots are in contact with the same electrical phase, the poles of the stator are formed by a plurality of conductor segments lying next to one another, so that voltages induced in the conductor segments, each with a shifted phase, occur as a result of the rotating rotor of the electrical machine, which leads to disadvantageous, large ring currents in the partial lines and thus to losses. Furthermore, the sub-lines in different planes are completely exposed to different electromagnetic conditions. For example, planes closer to the stator axis are more strongly exposed to the fringe field of the rotor of the electric machine than planes further from the stator axis. Furthermore, the inductance of the conductor segments in planes closer to the stator axis is different from the inductance in planes further from the stator axis.
In order to avoid loop currents, adjacent sub-lines can be switched in their order when connecting conductor segments in the winding head, which is known to the person skilled in the art as transposition. Thus, differences caused by the position of the sub-line can be compensated across the circuit of the sub-line. Adjacent stator slots, the conductor segments of which together form a pole, are called groups of holes.
SUMMERY OF THE UTILITY MODEL
The object of the invention is to provide a stator for an electric machine with reduced losses, which stator has partial lines which are arranged in a group of holes with an arbitrary number of stator slots in such a way that loop currents are avoided and different planar properties are compensated.
In order to achieve this object, a stator for an electrical machine, in particular for an electric motor, is proposed, which stator has: -a stator core comprising a plurality of stator slots which are arranged evenly with each other in a circumferential direction of the stator in such a way that they extend in an axial direction parallel to a stator axis, wherein a distance between centers of two directly adjacent stator slots in the circumferential direction corresponds to a slot distance, wherein conductor segments are arranged in the stator slots in E >1 planes which correspond to different distances from the stator axis, wherein a distance between centers of two directly adjacent planes in a radial direction corresponds to a plane distance; and a bar winding arranged in the stator slots, the bar winding being formed from a plurality of conductor segments, wherein for operation the bar winding is interconnected with P >1 electrical phases and SP ≧ 2P stator poles, wherein the stator has N >1 stator slots per stator pole, such that for each stator pole a hole group is formed having a first slot position, a last slot position and, if appropriate, a slot position therebetween, wherein the conductor segments of the hole group of the first stator pole connected with the first phase are connected with the conductor segments of the second stator pole by means of clamps, wherein the clamps each have a clamp width in the circumferential direction, wherein a first clamp has a first clamp width and a second clamp has a second clamp width different from the first clamp width, wherein the first clamps extend in the axial direction up to a first apex plane and the second clamps extend in the axial direction up to a second apex plane, wherein the first apex plane is different from the second apex plane, wherein the grippers each have a radial feed in the radial direction, wherein a first gripper has a first radial feed and the second grippers have a second radial feed different from the first radial feed.
The interconnection makes it possible to transpose sub-lines by means of clamps of various lengths through an arbitrary number of conductor segments. The difference in the length of the clamps is commonly referred to as the pitch and is a multiple of the groove distance. If no transposition is performed on the sub-line, all grippers of the sub-line not transposed have a gripper width of P x N slot distance. In addition, a complete exchange of the planes of the partial lines can be achieved during the transposition. Thus, different electrical conditions introduced in the sub-lines can be compensated for, for example, on the loop by different electrical characteristics of different planes.
It is conceivable that: the conductor segments are connected to the second end side of the stator by welding, wherein the first side is not the second side.
It is conceivable that: the transposition of the partial lines is effected here by exchanging the partial lines sequentially in the circumferential direction by one stator slot or by more than one stator slot. It is also conceivable that: complete swapping of planes of sub-lines is achieved by sequentially swapping sub-lines in a radial direction for one plane or more than one plane.
The invention is based on the object of providing a device for the treatment of cancer, which is characterized in that it comprises a housing and a cover.
According to a preferred embodiment of the present invention, it is provided that: the first radial feed is disposed toward the stator axis and the second radial feed is disposed away from the stator axis, or the first radial feed is disposed away from the stator axis and the second radial feed is disposed toward the stator axis. Here, the plane transformation performed by the radial feeding may include more than one plane. For example, a first clamp may be arranged for translating one planar distance or an odd multiple of a planar distance, while a second clamp is arranged for translating two planar distances or an even multiple of a planar distance. It is also conceivable that: the first clamps of the planes in odd positions of the plane sequence viewed from the stator axis are configured for shifting to even positions. Conceivable for this are: the second clamp is configured to transition from an even position to an odd position.
It is conceivable that the clamp width is at least ((P-1) × N +1) times and at most (N-1+ N × P) times the groove distance, wherein the sum of the clamp widths of the clamps is the groove distance (N)2P) times.
According to another preferred embodiment of the present invention, it is provided that: the first clamp width is 1/NxP of the slot distance, wherein the second clamp width is greater than (NxP) times the slot distance, wherein the second vertex plane is higher in the axial direction than the first vertex plane. This makes it possible to guide the clamping device neatly on the first winding head. Due to the different heights, the clamps do not interfere with each other when changing planes. It is conceivable that: the extension of the first winding head in the axial direction is determined by the apex plane having the largest extension in the axial direction.
According to another preferred embodiment of the present invention, it is provided that: the stator has x ≧ 1 second gripper and y ≧ 1 first gripper, where E can be divided exactly by x, where on a first plane of the first stator pole the conductor segment is connected by a second gripper with the conductor segment of the second stator pole, where, if x is greater than 1, the next higher plane of each E/x-th plane is connected by the second gripper with the conductor segment of the second stator pole, where all conductor segments of the first stator pole not connected with a second gripper are connected by a first gripper with the conductor segment of the second stator pole, respectively, where the second radial feed is ((E/x) -1) times the planar distance toward the stator axis, where the first radial feed is the planar distance away from the stator axis, or where the second radial feed is ((E/x) -1) times the planar distance away from the stator axis, wherein the first radial feed is a planar distance toward the stator axis. This may enable interleaving of multiple sets of planar transforms in an advantageous manner, i.e. allowing for a combination of multiple planar transforms. For example, the second planar transform may be started when the first planar transform has not been completed.
According to another preferred embodiment of the present invention, it is provided that: n can be divided exactly by x, wherein at a first slot position of the first stator pole the conductor section is connected to the conductor section of the second stator pole by means of a second clamp, wherein if x is greater than 1, the next higher slot position of each nth/x slot position is connected to the conductor section of the second stator pole by means of a second clamp, wherein all conductor sections of the first stator pole which are not connected to the second clamp are connected to the conductor section of the second stator pole by means of a first clamp, respectively, wherein the second clamp width is (N x P + (N/x) -1) times the slot distance, wherein the first clamp width is smaller than the second clamp width. This may enable interleaving of subsets of holes in an advantageous manner, i.e. allowing a combination of sub-line transpositions, and may start a second transposition of a sub-line, for example when a first transposition of another sub-line has not yet been completed. Conceivable for this are: the first clamp width is (N x P-1) times the slot distance.
According to another preferred embodiment of the present invention, it is provided that: the second clips have a first portion arranged on conductor segments of the stator slots of the first stator pole, a third portion arranged on conductor segments of the stator slots of the second stator pole, and a second portion arranged between the first portion and the third portion, wherein the second portion has a main direction of extension, wherein the main direction of extension is arranged substantially orthogonal to the axial direction. Since the second clips have a main direction of extension which is orthogonal to the axial direction, these clips are flat and require only a very small installation space.
It is conceivable that: the second portion is arcuate, wherein a first region of the second portion disposed on the first portion and a third region of the second portion disposed on the third portion have a greater arc radius than a second region of the second portion disposed between the first region and the third region. It is conceivable that: the arc radius is continuously changed such that the second clamp is only slightly curved in the apex of the second clamp, i.e. in the region furthest from the conductor segment in the axial direction. The height of the winding head can thus be set in an advantageous manner by a change in the arc radius.
It may also be proposed that: the second portion is arranged with one bend on the first portion and with another bend on the third portion, wherein an intermediate region between the one bend and the other bend is arranged substantially straight and orthogonal to the axial direction. The second clamp therefore has a substantially flat region, which is orthogonal to the axial direction, between the one bend and the other bend.
According to another preferred embodiment of the present invention, it is provided that: these second clamps are connected with the input interface or with the output interface, respectively. This makes it possible to advantageously connect the stator to the power electronics in a simple manner.
Another subject matter of the invention is an electric machine having a rotor and a stator as described above.
For the electric machine, which is preferably designed as an electric motor, the same advantages as already described in connection with the stator according to the invention can be achieved.
In general, the present invention discloses the following technical solutions 1 and 10, and the following solutions 2 to 8 are preferred technical solutions of the present invention:
1. a stator (9) for an electrical machine, in particular for an electric motor, characterized in that it has:
-a stator core (3) comprising a plurality of stator slots (4) which are arranged evenly with respect to each other in a circumferential direction (U) of the stator (9) in such a way that they extend in an axial direction (a) parallel to a stator axis (S), wherein the distance between the centers of two directly adjacent stator slots (4) in the circumferential direction (U) corresponds to a slot distance (NA), wherein the conductor segments (1) are arranged in E >1 planes in the stator slots (4), which planes correspond to different distances from the stator axis (S), wherein the distance between the centers of two directly adjacent planes in a radial direction (R) corresponds to a plane distance (EA); and
-a bar winding (10) arranged in the stator slots (4), the bar winding being formed of a plurality of conductor segments (1), wherein for operation the bar winding (10) is interconnected with P >1 electrical phases and SP ≧ 2 × P stator poles, wherein
-the stator (9) has N >1 stator slots (4) per stator pole such that for each stator pole a group of holes (L) is formed having a first slot position, a last slot position and possibly slot positions in between,
-wherein conductor segments (1) of a group of holes (L) of a first stator pole connected with a first phase are connected with conductor segments (1) of a second stator pole by means of a clamp,
-wherein the grippers each have a gripper width in the circumferential direction (U), wherein a first gripper (51) has a first gripper width (1SW) and a second gripper (50) has a second gripper width (2SW) which is different from the first gripper width (1SW),
-wherein the first clamp (51) extends in the axial direction (A) up to a first apex plane (SE1) and the second clamp (50) extends in the axial direction (A) up to a second apex plane (SE2), wherein the first apex plane (SE1) is different from the second apex plane (SE2),
-wherein the clamps each have a radial feed in the radial direction (R), wherein a first clamp (51) has a first radial feed (1RV) and the second clamps (50) have a second radial feed (2RV) different from the first radial feed (1 RV).
2. Stator (9) according to the preceding 1, characterized in that,
-the first radial feed (1RV) is arranged towards the stator axis (S) and the second radial feed (2RV) is arranged away from the stator axis (S), or
-the first radial feed (1RV) is arranged away from the stator axis (S) and the second radial feed (2RV) is arranged towards the stator axis (S).
3. Stator (9) according to one of the preceding claims 1-2, characterized in that the clamp width is at least ((P-1) × N +1) times and at most (N-1+ npp) times the slot distance (NA), wherein the sum of the clamp widths of the clamps is the slot pitch distance (NA)(N) of (NA)2P) times.
4. Stator (9) according to one of the preceding claims 1 to 3, characterized in that the first clamp width (1SW) is 1/(NxP) of the slot distance (NA), wherein the second clamp width (2SW) is larger than (NxP) times the slot distance (NA), wherein the second apex plane (SE2) is higher in the axial direction (A) than the first apex plane (SE 1).
5. Stator (9) according to one of the preceding claims 2 to 4, characterized in that the stator (9) has x ≧ 1 second clamps (50) and y ≧ 1 first clamps (51),
-wherein E is divisible by x, wherein on a first plane of the first stator pole the conductor segments (1) are connected to the conductor segments (1) of the second stator pole by means of a second clamp (50), wherein if x is greater than 1, the next higher plane of each E/x-th plane is connected to the conductor segments (1) of the second stator pole by means of the second clamp (50), wherein all conductor segments (1) of the first stator pole which are not connected to the second clamp (50) are connected to the conductor segments (1) of the second stator pole by means of a first clamp (51), respectively,
-wherein the second radial feed (2RV) is ((E/x) -1) times the planar distance (EA) towards the stator axis (S), then the first radial feed (1RV) is the planar distance (ES) away from the stator axis (S), or
-wherein the second radial feed (2RV) is ((E/x) -1) times the planar distance (EA) away from the stator axis (S), then the first radial feed (1RV) is the planar distance (ES) towards the stator axis (S).
6. Stator (9) according to the preceding 5, characterized in that,
-wherein N can be divided exactly by x, wherein at a first slot position of the first stator pole the conductor segment (1) is connected with a conductor segment (1) of the second stator pole by a second clamp (50), wherein if x is larger than 1, the next higher slot position of each N/x-th slot position is connected with a conductor segment (1) of the second stator pole by a second clamp (50), wherein all conductor segments (1) of the first stator pole which are not connected with the second clamp (50) are connected with a conductor segment (1) of the second stator pole by a first clamp (51), respectively,
-wherein the second gripper width (2SW) is (N x P + (N/x) -1) times the slot distance (NA), wherein the first gripper width (1SW) is smaller than the second gripper width (2 SW).
7. Stator (9) according to the preceding 6, characterized in that the first clamp width (1SW) is (N × P-1) times the slot distance (NA).
8. A stator (9) according to one of the preceding claims 1-7, characterized in that the second clamps (50) have a first part (50 ') arranged on the conductor segments (1) of the stator slots (4) of the first stator pole, a third part (50 "') arranged on the conductor segments (1) of the stator slots (4) of the second stator pole, and a second part (50") arranged between the first part (50 ') and the third part (50 "'), wherein the second part (50") has a main direction of extension (H), wherein the main direction of extension (H) is arranged substantially orthogonal to the axial direction (A).
9. Stator (9) according to one of the preceding claims 2 to 8, characterized in that the second clamps (50) are connected to the input interface or to the output interface, respectively.
10. An electric machine, characterized in that it has a rotor and a stator (9) according to one of the preceding claims 1-9.
Drawings
Further details, features and advantages of the invention will emerge from the figures and the following description of preferred embodiments with the aid of the figures. The drawings are only for purposes of illustrating embodiments of the invention and are not to be construed as limiting the invention.
Fig. 1 schematically shows conductor segments of a bar winding according to an exemplary embodiment of the present invention in a side view.
Fig. 2 schematically shows a stator according to an exemplary embodiment of the present invention.
Fig. 3 schematically shows a stator according to an exemplary embodiment of the present invention.
Fig. 4 schematically shows a region of a stator core of the stator of fig. 3 in a sectional view.
Fig. 5(a), 5(b) and 5(c) schematically show the region of the first winding head of the stator according to the prior art or according to an exemplary embodiment of the present invention, respectively.
Detailed Description
Fig. 1 shows an exemplary embodiment of a conductor section 1 which can be used to form a bar winding 10 (see fig. 2 and 3). The conductor segment 1 has a substantially rectangular cross section and is designed in a U-shape. Such conductor sections 1 are also referred to as hairpins (hairpins) because of their shape. The conductor section 1 is preferably formed from copper or aluminum or a copper aluminum alloy, whereby good electrical properties can be achieved.
In the production of the stator 9 (see fig. 2 and 3) of the electrical machine, the U-shaped conductor section 1 (as it is shown in fig. 1) can be pushed into the stator slot 4 (see fig. 3) from the first end side 15 (see fig. 2 and 3) of the stator core 3 (see fig. 2 and 3). After the conductor segment 1 has been introduced into the stator slot 4, the open end of the conductor segment 1, which projects at the first end side 15 of the stator core 3, is bent over in order to connect it to a further conductor segment 1. The bar winding 10 of the stator 9 is formed by connecting a plurality of such conductor segments 1.
According to a variant of the embodiment shown in fig. 1, the conductor section 1 can be designed in a V-shape. Further alternatively, a plurality of straight conductor segments 1 or a combination of straight conductor segments 1 and U-shaped and/or V-shaped conductor segments 2 may be used.
Fig. 2 shows a perspective view of a stator 9 according to an exemplary embodiment of the present invention. The stator 9 is suitable for internal rotor machines and comprises a hollow-cylindrical stator core 3 having a stator axis S, a circumferential direction U and a plurality of stator slots 4 extending in the axial direction a, which are arranged uniformly parallel to the stator axis S. The stator slots 4 have a slot distance NA in the circumferential direction, measured from centre to centre. In this regard, the axial direction a is the longitudinal direction of the groove and the direction of the groove depth is referred to as the radial direction. The stator core 3 is preferably designed as a stack of laminations. Arranged in the stator slots 4 are windings which are designed as bar windings 10 consisting of prefabricated conductor segments 1 (see fig. 1). The conductor segments 1 are each introduced with their free ends into the stator slots 4 in such a way that a closed connecting region connecting the free ends is arranged on the first end side 15 of the stator core 3. The closed connection region protrudes from the stator slot 4 on the first end side 15 and forms the first winding head 5. These free ends protrude from the stator slot 4 at a second end side 16 opposite the first end side 15 and form the second winding head 6.
Fig. 3 shows the stator 9 shown in fig. 2 in a side view. Apart from the details also shown in fig. 2, a first clamp 51 and a second clamp 50 can be identified. By means of the second fixture 50 and the first fixture 51 the sub-lines are transposed at the transition between the stator slots 4 (see fig. 5(a) to 5 (c)).
As can be derived from the illustration in fig. 4, every plurality (here every three) of stator slots 4 adjacent in the circumferential direction U forms a group of holes L, i.e. a group of stator slots 4 forming poles with the same phase, in the stator slots 4, conductor segments 1 are arranged side by side in the radial direction R on eight planes, the centres of which have a planar distance EA from each other in the radial direction R.
Fig. 5(a) to 5(c) schematically show the region of the first winding head 5 of the stator 9 according to the prior art or according to an exemplary embodiment of the present invention, respectively. For a better view, only the clamps associated with one phase are shown. Fig. 5(a) shows the region of the first winding head 5 of the stator 9 according to the prior art in a viewing direction along the axial direction a. The first and second clamps 51, 50 shift planes in the radial direction R. Here, in the illustrated first and second jigs 51 and 50, the plane change occurs in the same direction and an equal number of planes are changed, respectively.
Fig. 5(b) shows the region of the first winding head 5 of the stator 9 according to an exemplary embodiment of the present invention in a viewing direction along the axial direction a. The second gripper changes plane in the radial direction R by a second radial feed 2RV (upwards in the drawing). The first jig 51 shifts the plane by the first radial feed 1RV (downward in the drawing) in the opposite direction to the shifting direction of the second jig. Fig. 5(c) shows the region of the first winding head 5 of the stator 9 according to an exemplary embodiment of the present invention in a viewing direction along the radial direction R. The second clip 50 having the second clip width 2SW has a first portion 50 ', a second portion 50 "and a third portion 50"'. Between the first portion 50 'and the second portion 50 "and between the second portion 50" and the third portion 50 "', respectively, a bend is arranged. The second portion 50 "is substantially straight and has a main direction of extension H, which is arranged orthogonally to the axial direction a. In the example shown here, the three partial lines are transposed together with the first grippers 51 each having a first gripper width 1 SW. The second clamp 50 extends in the axial direction a up to a second apex plane SE2, and the first clamp extends in the axial direction a up to a first apex plane SE 1. The second vertex plane SE2 is higher than the first vertex plane. Thus, sufficient space is advantageously obtained in the winding heads for various plane changes of the first clamp 51 and the second clamp 50.
Claims (12)
1. A stator (9) for an electric machine, characterized in that it has:
-a stator core (3) comprising a plurality of stator slots (4) which are arranged evenly with respect to each other in a circumferential direction (U) of the stator (9) in such a way that they extend in an axial direction (a) parallel to a stator axis (S), wherein the distance between the centers of two directly adjacent stator slots (4) in the circumferential direction (U) corresponds to a slot distance (NA), wherein the conductor segments (1) are arranged in E >1 planes in the stator slots (4), which planes correspond to different distances from the stator axis (S), wherein the distance between the centers of two directly adjacent planes in a radial direction (R) corresponds to a plane distance (EA); and
-a bar winding (10) arranged in the stator slots (4), the bar winding being formed of a plurality of conductor segments (1), wherein for operation the bar winding (10) is interconnected with P >1 electrical phases and SP ≧ 2 × P stator poles, wherein
-the stator (9) has N >1 stator slots (4) per stator pole such that a group of holes (L) with a first slot position, a last slot position is formed for each stator pole,
-wherein conductor segments (1) of a group of holes (L) of a first stator pole connected with a first phase are connected with conductor segments (1) of a second stator pole by means of a clamp,
-wherein the grippers each have a gripper width in the circumferential direction (U), wherein a first gripper (51) has a first gripper width (1SW) and a second gripper (50) has a second gripper width (2SW) which is different from the first gripper width (1SW),
-wherein the first clamp (51) extends in the axial direction (A) up to a first apex plane (SE1) and the second clamp (50) extends in the axial direction (A) up to a second apex plane (SE2), wherein the first apex plane (SE1) is different from the second apex plane (SE2),
-wherein the clamps each have a radial feed in the radial direction (R), wherein a first clamp (51) has a first radial feed (1RV) and the second clamps (50) have a second radial feed (2RV) different from the first radial feed (1 RV).
2. A stator (9) according to claim 1,
-the first radial feed (1RV) is arranged towards the stator axis (S) and the second radial feed (2RV) is arranged away from the stator axis (S), or
-the first radial feed (1RV) is arranged away from the stator axis (S) and the second radial feed (2RV) is arranged towards the stator axis (S).
3. Stator (9) according to claim 1 or 2, characterized in that the clamp width is at least ((P-1) × N +1) times and at most (N-1+ npp) times the slot distance (NA), wherein the sum of the clamp widths of the clamps is (N-1+ npp) times the slot distance (NA)2P) times.
4. Stator (9) according to claim 1 or 2, characterized in that the first clamp width (1SW) is 1/(N × P) of the slot distance (NA), wherein the second clamp width (2SW) is larger than (N × P) times the slot distance (NA), wherein the second apex plane (SE2) is higher in the axial direction (a) than the first apex plane (SE 1).
5. Stator (9) according to claim 2, characterized in that the stator (9) has x ≧ 1 second clamp (50) and y ≧ 1 first clamp (51),
-wherein E is divisible by x, wherein on a first plane of the first stator pole the conductor segments (1) are connected to the conductor segments (1) of the second stator pole by means of a second clamp (50), wherein if x is greater than 1, the next higher plane of each E/x-th plane is connected to the conductor segments (1) of the second stator pole by means of the second clamp (50), wherein all conductor segments (1) of the first stator pole which are not connected to the second clamp (50) are connected to the conductor segments (1) of the second stator pole by means of a first clamp (51), respectively,
-wherein the second radial feed (2RV) is ((E/x) -1) times the planar distance (EA) towards the stator axis (S), then the first radial feed (1RV) is the planar distance (ES) away from the stator axis (S), or
-wherein the second radial feed (2RV) is ((E/x) -1) times the planar distance (EA) away from the stator axis (S), then the first radial feed (1RV) is the planar distance (ES) towards the stator axis (S).
6. A stator (9) according to claim 5,
-wherein N can be divided exactly by x, wherein at a first slot position of the first stator pole the conductor segment (1) is connected with a conductor segment (1) of the second stator pole by a second clamp (50), wherein if x is larger than 1, the next higher slot position of each N/x-th slot position is connected with a conductor segment (1) of the second stator pole by a second clamp (50), wherein all conductor segments (1) of the first stator pole which are not connected with the second clamp (50) are connected with a conductor segment (1) of the second stator pole by a first clamp (51), respectively,
-wherein the second gripper width (2SW) is (N x P + (N/x) -1) times the slot distance (NA), wherein the first gripper width (1SW) is smaller than the second gripper width (2 SW).
7. Stator (9) according to claim 6, characterized in that the first clamp width (1SW) is (N P-1) times the slot distance (NA).
8. A stator (9) according to claim 1 or 2, characterized in that the second clamps (50) have a first part (50 ') arranged on the conductor segments (1) of the stator slots (4) of the first stator pole, a third part (50 "') arranged on the conductor segments (1) of the stator slots (4) of the second stator pole, and a second part (50") arranged between the first part (50 ') and the third part (50 "'), wherein the second part (50") has a main direction of extension (H), wherein the main direction of extension (H) is arranged substantially orthogonal to the axial direction (a).
9. Stator (9) according to claim 2, characterized in that the second clamps (50) are connected with the input interface or with the output interface, respectively.
10. A stator (9) according to claim 1, characterized in that it is used in an electric motor.
11. A stator (9) according to claim 1, characterized in that the stator (9) has N >2 stator slots (4) per stator pole, such that for each stator pole a group of holes (L) is formed having a first slot position, a last slot position and slot positions in between.
12. An electric machine, characterized in that it has a rotor and a stator (9) according to one of the preceding claims 1-11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018125829.1 | 2018-10-18 | ||
| DE102018125829.1A DE102018125829A1 (en) | 2018-10-18 | 2018-10-18 | Stator for an electrical machine |
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| Publication Number | Publication Date |
|---|---|
| CN211018442U true CN211018442U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921742503.0U Active CN211018442U (en) | 2018-10-18 | 2019-10-16 | Stator for an electric machine |
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| Country | Link |
|---|---|
| CN (1) | CN211018442U (en) |
| DE (1) | DE102018125829A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154988A (en) * | 2023-10-30 | 2023-12-01 | 小米汽车科技有限公司 | Motor and vehicle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019215094A1 (en) * | 2019-10-01 | 2021-04-01 | Zf Friedrichshafen Ag | Winding diagram for an electrical machine |
| DE102022208039A1 (en) * | 2022-08-03 | 2024-02-08 | Zf Friedrichshafen Ag | Winding head, stator, electrical machine and method for producing a winding head |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5896250B2 (en) * | 2013-09-18 | 2016-03-30 | 株式会社デンソー | Rotating electric machine stator |
| DE102014223202A1 (en) * | 2014-11-13 | 2016-05-19 | Volkswagen Aktiengesellschaft | Wave winding, stator and electric machine |
| JP6410104B2 (en) * | 2015-07-31 | 2018-10-24 | 株式会社デンソー | Rotating electric machine stator and rotating electric machine equipped with the stator |
-
2018
- 2018-10-18 DE DE102018125829.1A patent/DE102018125829A1/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117154988A (en) * | 2023-10-30 | 2023-12-01 | 小米汽车科技有限公司 | Motor and vehicle |
| CN117154988B (en) * | 2023-10-30 | 2024-02-06 | 小米汽车科技有限公司 | Motor and vehicle |
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| Publication number | Publication date |
|---|---|
| DE102018125829A1 (en) | 2020-04-23 |
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