Rotor module for rotor of rotary electric machine
Patent Information
- Application Number
- JP2022195882
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2021-12-08
- Filing Date
- 2022-12-07
- Publication Date
- 2025-12-01
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a rotor module for a rotor of a rotating electrical machine that reduces torque ripple, and also to a rotor comprising such a rotor module and to a rotating electrical machine comprising such a rotor. [Background technology]
[0002] In a known manner, a rotating electrical machine having a rotating shaft comprises a rotor comprising a plurality of rotor modules, each rotor module comprising: a rotor module core; a plurality of permanent magnets defining a number of pole pairs each having a first pole and a second pole; Equipped with The first pole and the second pole of each magnetic pole pair are adjacent to each other, the first pole is a north pole and the second pole is a south pole, or the first pole is a south pole and the second pole is a north pole; the plurality of permanent magnets each comprising a first magnet structure defining a first pole and a second magnet structure defining a second pole; the first magnet configuration and the second magnet configuration are separate; A first angle between the first pole and the second pole of each pair is equal to 360° divided by twice the number of the pole pairs.
[0003] Each rotor module is angularly offset relative to adjacent rotor modules. The rotor modules are axially tilted so that the circumferential position of the poles varies along the axial length of the rotor. This angular offset can reduce torque ripple in the rotating electric machine. However, this configuration of rotor modules requires the use of different types of rotor modules, particularly to enable mechanical connection between the rotor modules and the shaft of the rotating electric machine, and between multiple rotor modules. These different types of rotor modules require different manufacturing tools. This complicates manufacturing and increases the cost of the rotating electric machine. Summary of the Invention
[0004] The object of the present invention is to reduce or eliminate these disadvantages.
[0005] The present invention relates to a rotor module for a rotor of a rotating electric machine having a rotation axis, the rotating electric machine comprising a stator comprising a stator core including radially oriented stator teeth, The rotor module includes: a rotor module core; a plurality of permanent magnets defining a number of pole pairs each having a first pole and a second pole; Equipped with the first pole and the second pole of each magnetic pole pair are adjacent; the first pole is a north pole and the second pole is a south pole, or the first pole is a south pole and the second pole is a north pole; the plurality of permanent magnets each comprising a first magnet structure defining a first pole and a second magnet structure defining a second pole; the first magnet configuration and the second magnet configuration are separate; a first angle between the first pole and the second pole of each pair equals 360° divided by twice the number of the pole pairs; a second angle between a second pole of a first pole pair and a first pole of a second pole pair adjacent to the second pole of the first pole pair equals the sum of the first angle and a first offset angle; the first deviation angle is greater than zero and less than or equal to a maximum deviation angle; the maximum offset angle is equal to 360° divided by the number of stator teeth; Regarding the rotor module.
[0006] The second angle, which is greater than the first angle, reduces torque ripple. Only one type of rotor plate is required to manufacture the rotor module core, simplifying manufacturing. Furthermore, the magnet configurations can be oriented in the direction of the rotation axis. Assembly of the module core and the magnet configurations is simplified. The cost of the rotor is reduced.
[0007] According to one embodiment, the first deviation angle is 30% to 70% of the first maximum deviation angle, preferably 45% to 55% of the first maximum deviation angle.
[0008] Such a first offset angle reduces torque ripple while maintaining the mechanical strength of the rotor module core, and further achieves a high torque ripple reduction while limiting torque reduction.
[0009] According to a further development of the invention, a third angle between the second pole of the second pole pair and the first pole of a third pole pair adjacent to the second pole of the second pole pair is equal to the sum of the first angle and a second offset angle, the second offset angle being greater than zero and less than or equal to the maximum offset angle.
[0010] According to a further development of the invention, the first and second offset angles are different.
[0011] By making the first deviation angle and the second deviation angle different, multiple harmonic components of the torque ripple can be effectively reduced.
[0012] According to a further development of the invention, the second deviation angle is 30% to 70% of the maximum deviation angle, preferably 45% to 55% of the maximum deviation angle.
[0013] According to a further development of the invention, the second offset angle is equal to the first offset angle.
[0014] By utilizing equal first and second offset angles, specific harmonic components of torque ripple can be strongly reduced.
[0015] According to a further development of the invention, the rotor module comprises at least four pole pairs, the number of pole pairs being an even number, the first pole pair and the fourth pole pair being symmetrical with respect to the rotation axis, and the second pole pair and the fifth pole pair being symmetrical with respect to the rotation axis.
[0016] This symmetry between the first and fourth pole pairs, and the second and fifth pole pairs, improves the balance of the rotor module.
[0017] According to a further development of the invention, the rotor module core comprises a plurality of magnet pockets, and the permanent magnets of the first and second magnet arrangements are arranged in the magnet pockets.
[0018] Because the magnet structures are axially oriented, the magnet pockets can be axially straight, simplifying insertion of the magnet structures into the magnet pockets and reducing manufacturing costs.
[0019] According to a further development of the invention, each first magnet arrangement and each second magnet arrangement comprises two permanent magnets forming a V-shape.
[0020] Such a magnet configuration allows for more magnet material to be used without having to increase the size of the rotor module, and also achieves higher reluctance torque.
[0021] According to a further development of the invention, each first magnet arrangement and each second magnet arrangement comprises four permanent magnets forming a double V-shape, the double V-shape comprising a first V-shape and a second V-shape, the tips of the first V-shape and the tips of the second V-shape being aligned in a radial plane of the rotor module, the radial plane defining the direct axis of the pole.
[0022] Such a magnet configuration allows for more magnet material to be used without having to increase the size of the rotor module, and also achieves higher reluctance torque.
[0023] According to a further development of the invention, each first and each second magnet arrangement comprises at least one permanent magnet (18) tangentially embedded in the respective magnet pocket.
[0024] Such a magnet arrangement allows for a reduced number of permanent magnets, and the rotor module is easier to manufacture.
[0025] According to a further development of the invention, the rotor module core is a laminated rotor module core comprising a plurality of rotor plates stacked in the direction of the rotation axis.
[0026] The invention also relates to a rotor for a rotating electrical machine, comprising alone a rotor module as described above.
[0027] The present invention also relates to a rotor for a rotary electric machine comprising at least a first rotor module and a second rotor module, wherein the first rotor module and the second rotor module are the rotor modules described above, the first rotor module and the second rotor module are identical and include a first axial end face and a second axial end face opposite the first axial end face, the second axial end face of the first rotor module facing the second axial end face of the second rotor module, and in particular, the second axial end face of the first rotor module contacts the second axial end face of the second rotor module.
[0028] According to a further development of the invention, the rotor for a rotary electric machine comprises a third rotor module, which is identical to the first rotor module, and the first axial end face of the third rotor module faces the first axial end face of the second rotor module, in particular the first axial end face of the third rotor module contacts the first axial end face of the second rotor module.
[0029] Such a rotor with multiple rotor modules can achieve low torque ripple while further limiting torque degradation. The use of identical rotor modules simplifies rotor manufacturing. The rotor plates of the rotor module cores can be identical, reducing the number of reference parts. This simplified manufacturing reduces rotor costs.
[0030] The invention also relates to a rotating electrical machine comprising a rotor as described above and a stator comprising a stator core including radially oriented stator teeth.
[0031] According to a further development of the invention, the stator is radially outside the rotor.
[0032] The invention will be better understood upon reading the following description and examining the accompanying drawings, which are provided for illustrative purposes only and are in no way intended to limit the invention. [Brief explanation of the drawings]
[0033] [Figure 1] FIG. 1 is a cross-sectional view of a rotating electrical machine according to the invention. [Figure 2] FIG. 2 shows a rotor module according to the prior art. [Figure 3] FIG. 3 shows a rotor module according to a first embodiment of the present invention. [Figure 4] FIG. 4 shows a rotor module according to a second embodiment of the present invention. [Figure 5] FIG. 5 shows a rotor module according to a third embodiment of the invention, which is provided with orthogonally oriented magnets. [Figure 6] FIG. 6 is a partially exploded schematic view of a rotor according to an embodiment of the present invention. [Figure 7] FIG. 7 is a partial schematic view of the rotor of FIG. [Figure 8]FIG. 8 shows a graph of the torque of a rotor module according to the prior art and a rotor module according to a first embodiment of the invention. DETAILED DESCRIPTION OF THE INVENTION
[0034] Identical, similar or analogous elements will be given the same reference numerals throughout the drawings. Ordinal numbers are used to distinguish features. They do not define the location of the features. Thus, for example, the third feature of a product does not imply that this product also has the first and / or second feature.
[0035] FIG. 1 shows a schematic half-section of a rotating electric machine 1. The electric machine 1 includes a shaft 4 and a rotor 3 mounted thereon. The shaft 4 is mounted, for example, by a first bearing 11 and a second bearing 12, so as to be rotatable relative to a stator 2 about a rotation axis A. The terms "axial" and "axially" refer to the direction of the rotation axis A of the rotating electric machine. The stator 2 includes a stator core 9 and windings 8. For example, the stator core 9 is a laminated stator core 9 including a plurality of stator plates. The stator core 9 includes radially oriented stator teeth. Slots are formed between the teeth. The windings 8 include conductors. The conductors are disposed in the slots. Winding end portions 10 electrically connect the conductors to form the windings 8. For example, the windings 8 may be U-Pin or multilobe windings. For example, the windings 8 may be three-phase AC windings or dual three-phase AC windings.
[0036] For example, the first bearing 11 is disposed on the first bracket 5, and the second bearing 12 is disposed on the second bracket 6. The first bearing 11 and the second bearing 12 are, for example, ball bearings, rolling bearings, or plain bearings. In the embodiment of FIG. 1 , the rotating electric machine includes a housing 32. The housing 32 includes a first bracket 5, a second bracket 6, and a housing portion 7. The housing portion 7 connects the first bracket 5 and the second bracket 6. For example, the stator core 9 is press-fitted into the housing portion 7. In particular, the housing portion 7 includes an inner cylindrical surface into which the outer cylindrical surface of the stator core 9 is press-fitted. In another embodiment (not shown), the first bracket or the second bracket includes a first tubular portion into which the stator core is press-fitted. The other bracket may include a second tubular portion. A cooling chamber may be formed between the first tubular portion and the second tubular portion. In another embodiment (not shown), a cooling chamber is formed within the housing portion.
[0037] The shaft 4 may be rotationally coupled to a drive member 13 such as a pulley or gear.
[0038] The rotor 3 is rotationally connected to the shaft. The rotor may include a first end ring 21 and a second end ring 20 disposed at opposite axial ends of the rotor. The first end ring 21 and the second end ring 20 may be, for example, balance rings. For example, balancing of the rotor may be achieved by material removal in the first and / or second balance rings.
[0039] The rotor 3 comprises one or more rotor modules 15 .
[0040] FIG. 2 shows a prior art rotor module 15 viewed perpendicular to the rotation axis A. The rotor module 15 includes a rotor module core 16. The rotor module core 16 is, for example, a laminated rotor module core including multiple rotor plates stacked in the direction of the rotation axis A. The rotor module core 16 includes multiple magnet pockets 38. Multiple permanent magnets 17 are disposed in the magnet pockets 38. The multiple permanent magnets 17 define multiple magnetic pole pairs 24 each including a first pole 22 and a second pole 23. The first pole 22 and the second pole 23 of each magnetic pole pair are adjacent. Either the first pole 22 is a north pole and the second pole 23 is a south pole, or the first pole 22 is a south pole and the second pole 23 is a north pole. The rotor module of FIG. 2 includes four magnetic pole pairs 24.
[0041] The plurality of permanent magnets 17 define a first magnet configuration 25 that defines each first pole 22 and a second magnet configuration 26 that defines each second pole 23. The first magnet configuration 25 and the second magnet configuration 26 are separate. In other words, there are no shared magnets between the first magnet configuration 25 and the second magnet configuration 26.
[0042] A first angle 27 between the first pole 22 and second pole 23 of each pair is equal to 360° divided by twice the number of pole pairs 24. The angle between the first pole and second pole of adjacent pole pairs 24 is equal to the first angle. Each first pole 22 and each second pole 23 has a direct axis. The angle between the poles is measured between the direct axes of the poles.
[0043] Each first magnet assembly 25 and each second magnet assembly 26 includes four permanent magnets 17 that form a double V. The double V includes a first V 39 and a second V 40. The tips of the first V 39 and the second V 40 are aligned in a radial plane of the rotor module. The radial plane defines the pole direct axis.
[0044] Figure 3 shows a rotor module 15 according to a first embodiment of the invention. This rotor module 15 shares several features with the prior art rotor modules described above; only the differences will be described in detail.
[0045] A second angle 28 between the second pole 23 of the first pole pair 29 and the first pole 22 of the second pole pair 30 adjacent to the second pole 23 of the first pole pair 29 is equal to the sum of the first angle 27 and the first offset angle. The first offset angle is greater than zero and less than or equal to the maximum offset angle. The maximum offset angle is equal to 360° divided by the number of stator teeth. Therefore, the second angle 28 is greater than the first angle 27.
[0046] The first deviation angle can be set to 30% to 70% of the first maximum deviation angle, and preferably 45% to 55% of the first maximum deviation angle.
[0047] Furthermore, for example, a third angle 31 between the second pole 23 of the second pole pair 30 and the first pole 22 of the third pole pair 32 adjacent to the second pole 23 of the second pole pair 30 is equal to the sum of the first angle 27 and the second offset angle, where the second offset angle is greater than zero and less than or equal to the maximum offset angle.
[0048] The second deviation angle can be set to 30% to 70% of the maximum deviation angle, and preferably 45% to 55% of the maximum deviation angle.
[0049] In the first embodiment of the present invention shown in FIG. 3, the second offset angle is equal to the first offset angle.
[0050] In a modification of the first embodiment, not shown, the second deviation angle is different from the first deviation angle.
[0051] Furthermore, for example, a fourth angle 33 between the second pole 23 of the third pole pair 32 and the first pole 22 of the sixth pole pair 34 adjacent to the second pole 23 of the third pole pair 32 is equal to the sum of the first angle 27 and the third offset angle. The third offset angle is greater than zero and less than or equal to the maximum offset angle.
[0052] The third deviation angle can be set to 30% to 70% of the maximum deviation angle, and preferably 45% to 55% of the maximum deviation angle.
[0053] In the first embodiment of the present invention shown in FIG. 3, the third offset angle is equal to the first offset angle.
[0054] In another embodiment not shown, the second offset angle is different from the first offset angle and / or the second offset angle.
[0055] Figure 8 shows a comparison between a first output torque 48 of a rotating electrical machine equipped with the prior art rotor module shown in Figure 2 and a second output torque 49 of a rotating electrical machine equipped with the rotor module shown in Figure 3. The torque ripple of the second output torque 49 is reduced by a factor of five compared to the torque ripple of the first output torque 48.
[0056] The size and shape of the magnet pocket 38 are defined so that the magnet 17 can be inserted into the magnet pocket 38. The magnet pocket 38 may include free space, i.e., space not occupied by the magnet 17. The free space may improve magnetic flux in the rotor. The free space may be filled with resin to hold the magnet.
[0057] In the first embodiment of the present invention shown in FIG. 3 , the rotor module 15 includes four pole pairs 24: a first pole pair 29, a second pole pair 30, a third pole pair 32, and a sixth pole pair 34. A fifth angle 35 is defined between the second pole 23 of the sixth pole pair 34 and the first pole 22 of the first pole pair 29. Considering the first, second, and third offset angles, the fifth angle is smaller than the first angle 27. Naturally, the various offset angles must be defined so that the fifth angle is large enough to maintain a bridge 46 in the rotor module core between the magnet pockets of the second pole 23 of the sixth pole pair 34 and the first pole 22 of the first pole pair 29. For example, the bridge must be thick enough to withstand well-known mechanical stresses, such as those caused by centrifugation. For manufacturing reasons, the bridge may have a thickness greater than the thickness of the rotor plate.
[0058] In a variation of the first embodiment (not shown), the number of pole pairs may be different, e.g., five or more pole pairs. The last pole pair is adjacent to the first pole pair 29 on the opposite side of the second pole pair 30. A final angle is defined between the second pole of the last pole pair and the first pole of the first pole pair. The various offset angles must be defined so that the final angle is large enough to maintain a bridge 46 between the magnet pockets of the second pole 23 of the last pole pair and the first pole 22 of the first pole pair 29 in the rotor module core. For example, the bridge must be thick enough to withstand well-known mechanical stresses, such as those caused by centrifugation. For manufacturing reasons, the bridge may have a thickness greater than the thickness of the rotor plate.
[0059] Figure 4 shows a rotor module 15 according to a second embodiment of the invention. This rotor module 15 shares several features with the prior art rotor modules described above; only the differences will be described in detail.
[0060] The rotor module 15 includes four magnetic pole pairs.
[0061] As in the first embodiment, a second angle 28 between the second pole 23 of the first pole pair 29 and the first pole 22 of the second pole pair 30 adjacent to the second pole 23 of the first pole pair 29 is equal to the sum of the first angle 27 and the first offset angle. The first offset angle is greater than zero and less than or equal to the maximum offset angle. The maximum offset angle is equal to 360° divided by the number of stator teeth. Therefore, the second angle 28 is greater than the first angle 27.
[0062] Rotor module 15 includes fourth pole pair 36 and fifth pole pair 37. First pole pair 29 and fourth pole pair 36 are symmetrical about axis of rotation A. Second pole pair 30 and fifth pole pair 37 are symmetrical about axis of rotation A. The angle between second pole 23 of fourth pole pair 36 and first pole 22 of fifth pole pair 37 is equal to second angle 28.
[0063] In a variation of the second embodiment of the present invention, not shown, the number of magnetic pole pairs is an even number and is equal to or greater than 6. Each magnetic pole pair is symmetrical to another magnetic pole pair with respect to the axis of rotation A.
[0064] As with the first embodiment of the present invention and its variations, the various offset angles must be defined to maintain the bridge 46 between the pole pockets of the first and second poles of adjacent pole pairs in the rotor module core. For example, the bridge must be thick enough to withstand well-known mechanical stresses, such as those caused by centrifugation. For manufacturing reasons, the bridge may have a thickness greater than the thickness of the rotor plate.
[0065] As can be seen in Figures 3 and 4, the rotor module core 16 includes a plurality of magnet pockets 38. The permanent magnets 17, 18 of the first magnet configuration 25 and the second magnet configuration 26 may be disposed in the magnet pockets 38. Each of the first magnet configuration 25 and each of the second magnet configuration 26 includes four permanent magnets 17 forming a double V-shape. The double V-shape includes a first V-shape 39 and a second V-shape 40. For example, the tips of the first V-shape 39 and the second V-shape 40 are aligned on a radial plane of the rotor module. For example, the radial plane defines a direct axis of the poles.
[0066] In another embodiment not shown, each first magnet arrangement 25 and each second magnet arrangement 26 includes two permanent magnets 17 that form a V-shape.
[0067] 5 illustrates a third embodiment of the present invention. The third embodiment is similar to the second embodiment. However, each first magnet assembly 25 and each second magnet assembly 26 includes at least one permanent magnet 18 tangentially embedded in each magnet pocket 38. In other words, the magnets are orthogonally oriented.
[0068] Another embodiment of the present invention, not shown, is similar to the first embodiment of the present invention, but the first and second magnet arrangements are similar to the first and second magnet arrangements of the third embodiment of the present invention.
[0069] Another embodiment of the present invention, not shown, is similar to a variation of the first embodiment of the present invention, but the first and second magnet assemblies are similar to the first and second magnet assemblies of the third embodiment of the present invention.
[0070] Another embodiment of the present invention, not shown, is similar to a variation of the second embodiment of the present invention, but the first and second magnet assemblies are similar to the first and second magnet assemblies of the third embodiment of the present invention.
[0071] In all embodiments, the permanent magnet may include multiple element permanent magnets.
[0072] For example, the rotor 3 of the rotating electrical machine 1 comprises a single rotor module 15 .
[0073] In another embodiment, the rotor 3 of the rotating electrical machine 1 includes at least a first rotor module 41 and a second rotor module 42. The first rotor module 41 and the second rotor module 42 are identical. The first rotor module 41 and the second rotor module 42 include a first axial end face 44 and a second axial end face 45 opposite the first axial end face 44. The second axial end face 45 of the first rotor module 41 faces the second axial end face 45 of the second rotor module 42. In particular, the second axial end face 45 of the first rotor module 41 contacts the second axial end face 45 of the second rotor module 42. Due to the offset angle, the first axial end face 44 and the second axial end face 45 are different.
[0074] In another embodiment, in addition to the first rotor module 41 and the second rotor module 42, the rotor 3 of the rotating electrical machine 1 comprises a third rotor module 43. The third rotor module 43 and the first rotor module 41 are identical. For example, the first axial end face 44 of the third rotor module 43 faces the first axial end face 44 of the second rotor module 43. In particular, the first axial end face 44 of the third rotor module 43 is in contact with the first axial end face 44 of the second rotor module 43.
[0075] In another embodiment, the rotor comprises more than three rotor modules 15 .
[0076] In another embodiment, portions of the first axial end faces of adjacent rotor modules face each other, and / or portions of the second axial end faces of adjacent rotor modules face each other, and at least one first axial end face faces the second axial face of an adjacent rotor module.
[0077] Figure 6 shows a schematic exploded view of the rotor 3 comprising a first rotor module 41, a second rotor module 42 and a third rotor module 43. Figure 7 shows another view of the rotor 3.
[0078] The drawing shows a rotor module 15, a rotor 3 for a rotating electrical machine 1, with a stator 2 radially outside the rotor 3. As can be seen, the rotor module 15 and the rotor are provided with an axial bore 47. The axial bore 47 is designed to receive the shaft 13. The rotor 3 is, for example, press-fit onto the shaft 13. In another example, the shaft 13 includes a shoulder and a thread. The rotor 3 is fixed to the shaft 13, for example, between the shoulder and a nut that is screwed onto the thread.
[0079] In another embodiment, not shown, the rotor is not mounted on a shaft, but is instead mounted on a tubular part, such as the clutch carrier of a clutch module.
[0080] In another embodiment, not shown, the rotor is fixed to the rotor hub.
[0081] In another embodiment, not shown, the stator is radially inward of the rotor. [Explanation of symbols]
[0082] 1 Rotating Electrical Machines 2 stator 3 rotors 4 shafts 5 First Bracket 6 Second bracket 7 Housing 8 windings 9 Stator core 10 Winding end 11 First bearing 12 Second bearing 13 Driving member 15 rotor module 16 rotor module core 17 Permanent magnets 18 Permanent Magnets 20 Second end ring 21 First end ring 22 1st pole 23 2nd pole 24 magnetic pole pairs 25 First magnet component 26 Second magnet component 27 First Angle 28 Second Angle 29 First magnetic pole pair 30 Second magnetic pole pair 31 Third Angle 32 Third magnetic pole pair 33 Fourth Angle 34 6th magnetic pole pair 35 Fifth Angle 36 4th magnetic pole pair 37 5th magnetic pole pair 38 Magnetic Pocket 39 First V-shape 40 2nd V-shape 41 First Rotor Module 42 Second Rotor Module 43 Third Rotor Module 44 1st axis end face 45 2nd axis end face 46 Bridge 47 Axial hole 48 First output torque 49 Second output torque
Claims
1. A rotor module (15) for a rotor (3) of a rotating electrical machine (1) having a rotation axis (A), comprising: The rotating electrical machine (1) comprises a stator (2) comprising a stator core (9) including radially oriented stator teeth; The rotor module (15) comprises: - a rotor module core (16), a plurality of permanent magnets (17, 18) defining a number of pole pairs (24) each comprising a first pole (22) and a second pole (23); Equipped with The first pole (22) and the second pole (23) of each magnetic pole pair (24) are adjacent to each other, The first pole (22) is a north pole and the second pole (23) is a south pole, or the first pole (22) is a south pole and the second pole (23) is a north pole; The plurality of permanent magnets (17, 18) define a first magnet structure (25) that defines each first pole (22) and a second magnet structure (26) that defines each second pole (23); the first magnet configuration (25) and the second magnet configuration (26) are separate; a first angle (27) between the first pole (22) and the second pole (23) of each pair equals 360° divided by twice the number of the pole pairs (24); a second angle (28) between the second pole (23) of the first pole pair (29) and the first pole (22) of the second pole pair (30) adjacent to the second pole (23) of the first pole pair (29) is equal to the sum of the first angle (27) and a first offset angle; the first deviation angle is greater than zero and less than or equal to a maximum deviation angle; the maximum offset angle is equal to 360° divided by the number of stator teeth; Rotor module (15).
2. The first deviation angle is 30% to 70% of the maximum deviation angle, preferably 45% to 55% of the maximum deviation angle. A rotor module (15) according to claim 1.
3. a third angle (31) between the second pole (23) of the second pole pair (30) and the first pole (22) of a third pole pair (32) adjacent to the second pole (23) of the second pole pair (30) is equal to the sum of the first angle (27) and a second offset angle; the second deviation angle is greater than zero and equal to or less than the maximum deviation angle; A rotor module (15) according to claim 1.
4. The second deviation angle is 30% to 70% of the maximum deviation angle, preferably 45% to 55% of the maximum deviation angle. A rotor module (15) according to claim 3.
5. The second offset angle is equal to the first offset angle. A rotor module (15) according to claim 4.
6. The rotor module (15) comprises at least four magnetic pole pairs (24); The number of the magnetic pole pairs (24) is an even number, The first magnetic pole pair (29) and the fourth magnetic pole pair (36) are symmetrical with respect to the rotation axis (A), The second magnetic pole pair (30) and the fifth magnetic pole pair (37) are symmetrical with respect to the rotation axis (A). A rotor module (15) according to claim 1.
7. The rotor module core (16) includes a plurality of magnet pockets (38); the permanent magnets (17, 18) of the first magnet configuration (25) and the second magnet configuration (26) are disposed in the magnet pockets (38); A rotor module (15) according to any one of the preceding claims.
8. Each of the first and second magnet configurations (25, 26) includes two permanent magnets (17) that form a V-shape. A rotor module (15) according to claim 7.
9. Each of the first and second magnet configurations (25) and (26) includes four permanent magnets (17) forming a double V-shape; The double V-shape comprises a first V-shape (39) and a second V-shape (40); the tips of the first V-shape (39) and the second V-shape (40) are aligned in a radial plane of the rotor module; the radial plane defines the polar direct axis; A rotor module (15) according to claim 7.
10. Each of the first and second magnet configurations (25, 26) includes at least one permanent magnet (18) tangentially embedded in each magnet pocket (38). A rotor module (15) according to claim 7.
11. A rotor (3) for a rotating electrical machine (1) comprising solely a rotor module (15) according to claim 1.
12. A rotor (3) for a rotating electrical machine (1), comprising at least a first rotor module (41) and a second rotor module (42), the first rotor module (41) and the second rotor module (42) are rotor modules (15) according to claim 1; The first rotor module (41) and the second rotor module (42) are identical and include a first axial end face (44) and a second axial end face (45) opposite the first axial end face (44), the second axial end surface (45) of the first rotor module (41) faces the second axial end surface (45) of the second rotor module (42), in particular, the second axial end surface (45) of the first rotor module (41) contacts the second axial end surface (45) of the second rotor module (42); A rotor (3) for a rotating electrical machine (1).
13. a rotor (3) for a rotating electrical machine (1) comprising a third rotor module (43); the third rotor module (43) and the first rotor module (41) are identical; the first axial end surface (44) of the third rotor module (43) faces the first axial end surface (44) of the second rotor module (43), in particular, the first axial end surface (44) of the third rotor module (43) contacts the first axial end surface (44) of the second rotor module (43); A rotor (3) for a rotating electrical machine (1) according to claim 12.
14. A rotating electrical machine (1) comprising a rotor (3) according to one of claims 11 to 13 and a stator (2) comprising a stator core (9) including radially oriented stator teeth.
15. The stator (2) is located radially outside the rotor (3). A rotating electrical machine (1) according to claim 14.