Machine assembly for an electric machine

Abstract

The invention relates to a machine assembly (110) for an electrical machine, having a base body (200) which has a plurality of slots (210) and is provided with a multiphase winding (330), wherein each of the plurality of slots (210) is respectively only occupied by individual phases (331, 332, 333, 334, 335, 336) of the multiphase winding (330), and the multiphase winding (330) is a plug-in winding (450) in which arc-shaped conductors (451, 452, 453, 454) are respectively plugged into two slots (406, 412, 413, 418, 419, 424) of the plurality of slots (210), at least one first arc-shaped conductor (451) and a second arc-shaped conductor (452) which belong to a first phase (331) of the multiphase winding (330) constitute different winding pitches.

Description

Technical Field

[0001] The present invention relates to a machine assembly for an electric motor having a base having a plurality of slots and a multiphase winding, wherein each of the plurality of slots is occupied only by a particular phase of the multiphase winding, and the multiphase winding is a plug-in winding in which bow-shaped conductors are plugged into two of the plurality of slots respectively. Background Technology

[0002] Machine components for motors, particularly multiphase electrically excited synchronous motors, are known from the prior art. These machine components typically have a base with an even number of slots and multiphase windings. Here, the machine component may constitute the stator of a multiphase electrically excited synchronous motor, but alternatively, it may also constitute the rotor of such synchronous motors.

[0003] For multiphase electrically excited synchronous motors that should operate at a voltage below the so-called touch protection voltage of 60 V, the current in the corresponding multiphase windings increases when a correspondingly high power is required. In order to keep the current to be switched by the corresponding power semiconductor in each phase small, a higher number of phases, such as six phases, is often used.

[0004] To achieve a six-phase winding, two electrically separated sub-winding systems are typically used, each consisting of three phases. Here, the two three-phase sub-winding systems are usually arranged electrically either with a 30° phase offset relative to each other or with a 0° phase offset relative to each other. An electrically excited synchronous motor with six-phase windings having a 30° phase offset is a so-called "true" six-phase motor, while an electrically excited synchronous motor with six-phase windings without phase offset or with a 0° phase offset is a three-phase motor with a dual system, where the two three-phase sub-winding systems are connected in parallel, or a six-phase winding is constructed with two parallel branches.

[0005] However, in such an electrically excited synchronous motor with six-phase windings, relatively small inductances arise between these sub-winding systems due to the relatively large magnetic coupling between the two sub-winding systems used separately. Here, the two three-phase sub-winding systems with a 30° phase shift exhibit electrical characteristics such that the inductance essentially disappears for the fifth, seventh, ninth, ... orders of electrical speed. The inductance at the fifth order frequency is, for example, 14 times smaller than the inductance of the fundamental oscillation. Consequently, very large currents are possible at the aforementioned orders, even with relatively small voltages that can be generated by the synchronous motor itself or by its operation, which typically causes problems in the corresponding power semiconductors required to switch the current in each phase.

[0006] In a two-phase sub-winding system with a 0° phase offset, the magnetic coupling between the two sub-winding systems is at its maximum. Therefore, the same voltage must be applied to both three-phase sub-winding systems to prevent uneven current distribution. Furthermore, in clock-controlled converters, very precise simultaneous switching of the corresponding half-bridges in the two parallel three-phase sub-winding systems is crucial, as even a small time offset during switching can result in unacceptably high current peaks and thus overload the corresponding electrically excited synchronous motor with six-phase windings.

[0007] As a result, the six-phase windings of this electrically excited synchronous motor cannot be constructed using the so-called hairpin (or U-pin) or I-pin techniques because, unlike the case of using, for example, single-coil windings, the magnetic coupling between the two three-phase sub-winding systems is particularly strong in such a construction. This is independent of whether the two three-phase sub-winding systems are arranged electrically relative to each other with a 30° phase offset or with a 0° phase offset. Summary of the Invention

[0008] This invention relates to a machine assembly for an electric motor, having a base having a plurality of slots and a multiphase winding, wherein each of the plurality of slots is occupied only by a particular phase of the multiphase winding, and the multiphase winding is a plug-in winding in which arcuate conductors are plugged into two slots respectively. At least one first arcuate conductor and one second arcuate conductor belonging to a first phase of the multiphase winding constitute different wickelschritt pitches.

[0009] Therefore, a machine component with multiphase windings can be provided, wherein the coupling inductance between the first and second sub-winding systems constituting the multiphase windings can be increased by varying the winding pitch. This advantageously reduces the sensitivity of the multiphase windings to fifth, seventh, ninth, ... harmonics. Furthermore, the multiphase windings can be manufactured in a simple manner using a plug-in technique, wherein both hairpin (or U-pin) and I-pin windings can be implemented.

[0010] Preferably, the first arc-shaped conductor has a first arc length shaped for a pitch of seven slots, and the second arc-shaped conductor has a second arc length shaped for a pitch of five slots.

[0011] Therefore, multiphase windings can be manufactured quickly and without complexity.

[0012] The first phase preferably has multiple arc-shaped conductors, which respectively form alternating winding pitches of five and seven slots.

[0013] The alternation of five-slot and seven-slot windings advantageously enables the parallel or interleaved connection of the first and second phases, the second phase also having multiple arcuate conductors forming alternating five-slot and seven-slot windings. Here, the arcuate conductors of the second phase can be arranged in parallel or interleaved with the arcuate conductors of the first phase with a five-slot winding, while the arcuate conductors of the first phase achieve a seven-slot winding, and vice versa. Thus, a magnetic effect can be generally achieved when the first and second phases are energized in parallel, as is achieved in two parallel phases with six-slot windings respectively.

[0014] Preferably, each phase of the multiphase winding has multiple arc-shaped conductors that form alternating pitches of five and seven slots, respectively.

[0015] Therefore, when providing multiphase windings, in the case of an even number of phases, each pair of phases can be intertwined with each other in a simple manner as described above.

[0016] According to one embodiment, the multiphase winding is a six-phase winding having a system of two three-phase misaligned sub-windings with 0° electrical offset.

[0017] Therefore, a multiphase winding can be provided, which is particularly suitable for use in electrically excited synchronous motors that operate in a low voltage range at voltages below the so-called 60-volt touch protection voltage. Furthermore, in the case of an electrically excited synchronous motor, a six-phase winding is provided, where the current to be switched by the corresponding power semiconductor in each phase can be kept relatively small.

[0018] Preferably, different winding pitches are given in advance in order to minimize torque fluctuations caused by the fifth and seventh harmonics.

[0019] Therefore, it is possible to reduce the load on electrically excited synchronous motors with multi-phase windings during operation, thereby effectively extending their service life.

[0020] According to one embodiment, the machine assembly is configured for a motor constructed according to the type of electrically excited synchronous motor, wherein the multiphase winding includes 6 phases and forms n * 2 poles, wherein the plurality of slots has n * 12 slots, and wherein n is an integer.

[0021] Therefore, a reliable and robust electrically excited synchronous motor can be provided, wherein the sensitivity of the multiphase windings to fifth, seventh, ninth, ... harmonics is advantageously reduced. Furthermore, the multiphase windings can be manufactured in a simple manner using a plug-in technique, wherein both hairpin (or U-pin) windings and I-pin windings can be implemented.

[0022] Furthermore, the present invention relates to a method for manufacturing a machine assembly for an electric motor, wherein the machine assembly has a base having a plurality of slots and a plug-in winding having a plurality of arc-shaped conductors. The method comprises the following steps:

[0023] a) Provide a pre-given number of arc-shaped conductors corresponding to the plurality of slots,

[0024] b) A cross-cutting tool (Schränkwerkzeug) providing an annular outer part with torsion resistance and an annular or cylindrical inner part rotatable relative to the outer part, wherein the outer part and the inner part each have a corresponding number of slots.

[0025] c) Adjust the interlacing tool to a starting position in which the number of slots belonging to the outer component and the number of slots belonging to the inner component are respectively aligned in the radial direction of the interlacing tool and form radial slot pairs.

[0026] d) Each second radial slot pair is equipped with an arc-shaped conductor in the circumferential direction of the interlacing tool.

[0027] e) Rotate the inner component relative to the outer component by a predetermined angle in a predetermined rotational direction, the angle corresponding to the angle range of the two slots of the inner component, wherein the unequipped slots of the outer component and the inner component are respectively aligned in the radial direction of the interlacing tool and form an unequipped radial slot pair.

[0028] f) Each unequipped radial slot pair is equipped with an arcuate conductor in the circumferential direction of the interlacing tool, and

[0029] g) Rotate the inner component relative to the outer component by a predetermined angle in a direction opposite to the predetermined direction of rotation, the predetermined angle corresponding to the angle range of the seven slots of the inner component, wherein the arcuate conductors are formed with five slots interlaced and the arcuate conductors are formed with seven slots interlaced.

[0030] Therefore, it is possible to manufacture bow-shaped conductors with five and seven slots in a simple manner for use with machine components of an electric motor, wherein the machine component has a base with multiple slots into which the bow-shaped conductors can be introduced.

[0031] Preferably, the method includes the following additional steps:

[0032] a) Remove the five-slot staggered arc conductors and the seven-slot staggered arc conductors from the staggered tool, and

[0033] b) Starting from the insertion side of the base, equip the base of the machine assembly with bow-shaped conductors with five slots interlaced and bow-shaped conductors with seven slots interlaced.

[0034] Therefore, in order to form a plug-in winding, bow-shaped conductors with a pitch of five and seven slots can be quickly and easily arranged on the base of the machine assembly.

[0035] Preferably, the method includes the following additional steps, which are performed on the connection side of the substrate that is axially opposite to the insertion side of the substrate:

[0036] a) Each free end of either a five-slot staggered arc conductor or a seven-slot staggered arc conductor configured to implement additional pitch is radially outwardly bent by one conductor thickness in the radial direction of the substrate.

[0037] b) In a predetermined rotational direction, all free ends of the innermost arc-shaped conductors arranged in the radial direction of the substrate, with five slots interlaced and seven slots interlaced, are staggered by six slots.

[0038] c) In a rotational direction opposite to the pre-given rotational direction, all free ends of the second innermost arcuate conductors arranged radially in the substrate, with five slots interlaced and seven slots interlaced, are staggered by five slots.

[0039] d) The free ends that were bent in step a) are interlaced with seven slots in a rotational direction opposite to the pre-given rotational direction, in a manner that passes through the interlaced free ends in step c).

[0040] Therefore, the free ends of the arc-shaped conductors can be arranged on the base of the machine assembly in a simple manner to form the required welded connections at directly radially adjacent positions.

[0041] Preferably, the method includes an additional step performed on the connection side of the substrate that is axially opposite to the insertion side of the substrate:

[0042] a) Connect the free ends of the arc-shaped conductors arranged radially aligned in the substrate, with five slots interlaced and seven slots interlaced, to each other.

[0043] Therefore, each phase of a multiphase winding can be safely and reliably constructed on the substrate of a machine component.

[0044] The connection between the free ends is preferably achieved by welding.

[0045] Therefore, a stable and robust connection can be provided at the free end.

[0046] According to one embodiment, for each phase of the plug-in winding, a deflection connector (Umlenkverbinder) for constituting the phase is arranged on the plug-in winding.

[0047] Therefore, each phase of the plug-in winding can be constructed using a minimum number of deflection connectors. Attached Figure Description

[0048] The invention is described in detail below with reference to embodiments shown in the accompanying drawings. Wherein are shown:

[0049] Figure 1 A schematic diagram of an electric motor having machine components according to one embodiment is shown.

[0050] Figure 2 It shows Figure 1 A cross-sectional view of the base of the machine component.

[0051] Figure 3 The following is illustrated regarding the use of one embodiment in Figure 2 A schematic diagram of the slot occupancy diagram (Nutbelegungsplan) of the 12 slots of the multiphase winding on the substrate.

[0052] Figure 4 based on Figure 3 The slot occupancy diagram shows the slots used in Figure 2 A schematic diagram of the slot occupancy of the 25 slots of the multiphase winding on the substrate.

[0053] Figure 5 According to Figure 3 and Figure 4 The slot occupies the area shown in the diagram. Figure 3 and Figure 4 A schematic diagram of an exemplary phase winding scheme (Wickelschema) for a multiphase winding.

[0054] Figure 6 It shows that according to Figure 3 and Figure 4 The slot occupancy map Figure 3 and Figure 4 A schematic diagram of two exemplary phase winding schemes for a multiphase winding.

[0055] Figure 7A The diagram shows the bow-shaped conductors and the cross-shaped conductors used for manufacturing. Figure 3 and Figure 4 A schematic diagram of a tool for multiphase windings.

[0056] Figure 7B It shows the interlacing Figure 7A A diagram of the tools.

[0057] Figure 8 It shows Figure 2 A perspective view of the insertion side of the base of the machine component, which has according to Figure 3 and Figure 4 The slot occupancy map Figure 3 and Figure 4 The multiphase windings, and

[0058] Figure 9 It shows Figure 2 A schematic diagram of the connection side of the base of the machine component axially opposite the insertion side, which has according to Figure 3 and Figure 4 The slot occupancy map Figure 3 and Figure 4 Multiphase windings. Detailed Implementation

[0059] In the accompanying drawings, elements with the same or similar functions are given the same reference numerals and are described more accurately only once.

[0060] Figure 1 An exemplary electric motor 100 is shown, which is preferably operable as both a motor and a generator. The motor 100 illustratively has a stator 110 and a rotor 120, wherein, in the context of the invention, the stator 110 and rotor 120 constitute a machine assembly of the motor 100. The stator 110 is further described below as an exemplary machine assembly according to the invention, while the rotor 120 can be arbitrarily designed. However, it is equally possible, according to the invention, that the rotor 120 can also be constructed as the machine assembly described below, while the stator 110 can be implemented arbitrarily.

[0061] Figure 2 It shows Figure 1 The machine component 110, which is configured according to one embodiment as Figure 1 The stator of the motor 100. The machine assembly or stator 110 exemplary has a base 200 having an even number of slots 210. The base 200 here constitutes the stator core and the even number of slots 210 is illustratively 48.

[0062] The slots of the plurality of slots 210 are preferably elongated and parallel to... Figure 1 The rotation axis of the motor 100 or the machine assembly 110 extends. With respect to the circumferential direction of the machine assembly 110, the plurality of slots 210 are spaced apart from each other, or the individual slots of the plurality of slots 210 are spaced apart from each other.

[0063] In the example shown, 48 slots form a plurality of slots 210. These 48 slots are mechanically arranged at approximately 7.5° intervals along the circumference of machine assembly 110.

[0064] Preferably, the machine assembly 110 with 48 slots is configured to accommodate a multiphase winding comprising six phases and configured for use with an eight-pole electrically excited synchronous motor, i.e., an electrically excited synchronous motor with four pole pairs, wherein the 48 slots constitute a plurality of slots 210. Here, the 48 slots of the plurality of slots 210 are preferably doubly occupied, that is, each of the 48 slots accommodates exactly two conductors, which can each be assigned to one of the six phases. Therefore, the multiphase winding is preferably constructed according to the type of double-layer winding.

[0065] Used to achieve Figure 2 The exemplary multiphase winding of the six-phase winding of machine component 110 will be discussed later. Figures 3 to 6 The invention is described in detail below, wherein 48 slots form a plurality of slots 210. However, it should be noted that the invention is not limited to an eight-pole electrically excited synchronous motor having a machine assembly comprising exactly 48 slots and having a multiphase winding with six phases. More precisely, the invention can also be applied to other synchronous motors in which an even number of slots are provided on the machine assembly to form a multiphase winding. The invention is particularly applicable to all synchronous motors having multiphase windings having six phases and being provided with n*2 poles and n*12 slots, where n is an integer.

[0066] Figure 3 An exemplary slot occupancy diagram 300 is shown, which is associated with an exemplary multiphase winding 330 and is used to form Figure 2 An illustrative slot group of 12 slots out of 48 slots in the machine component 110 has been provided. This illustrative slot group shows the pole pairs formed by the multiphase winding 330 and is repeated three times in this embodiment to achieve four pole pairs occupying 48 slots and forming the exemplary multiphase winding 330.

[0067] Machine assembly 110 has a base 200 on which 12 slots, as shown, are constructed, wherein each slot is numbered sequentially within a slot numbering scheme 380 from 1 to 12. Slot occupancy figure 300 illustrates an exemplary multiphase winding 330, which is exemplarily composed of six phases 331, 332, 333, 334, 335, and 336, preferably constructed according to the type of plug-in winding and arranged in a plurality of slots 210.

[0068] According to one embodiment, each of the plurality of slots 210 is occupied only by one of the six phases 331, 332, 333, 334, 335, 336 of the multiphase winding 330. Here, in the multiphase or six-phase winding 330 preferably constructed according to the type of plug-in winding, the arc-shaped conductor is preferred. Figure 4451, 452, 453, and 454 are respectively inserted into two slots of the multiple slots 210. Figure 4 In 406, 412, 413, 418, 419, 424), at least one first arc-shaped conductor belonging to the first phase 331 of the multi-phase or six-phase winding 330 is ( Figure 4 451 in the middle) and the second arc-shaped conductor ( Figure 4 The 452) in the middle constitute different pitches, as shown below. Figure 4 As described in [the text].

[0069] Exemplarily, the six-phase winding 330 includes at least one first sub-winding system 360 and one second sub-winding system 370. The first sub-winding system 360 includes a first plurality of phases, exemplarily composed of phases 331, 332, and 333. The second sub-winding system 370 includes a second plurality of phases, exemplarily composed of phases 334, 335, and 336. The first and second sub-winding systems 360 and 370 are preferably constructed as three-phase systems, respectively. The two three-phase sub-winding systems 360 and 370 are preferably staggered and have an electrical offset of 0°.

[0070] Explanatory, as in Figure 2 As described herein, the six-phase winding 330 is constructed according to a double-layer winding type. This double-layer winding includes a first winding layer 381 and a second winding layer 382. The first winding layer 381 is... Figure 2 Arranged in a radially inward position in machine component 110 and therefore in Figure 3 The middle layer is positioned above, while the second winding layer 382 is... Figure 2 Arranged radially outward in machine component 110 and therefore in Figure 3 It is located in the position below machine component 110.

[0071] Figure 4 An exemplary slot occupancy diagram 400 is shown, which exemplarily includes... Figure 3 The slot occupies Figure 300 and repeats it once. Therefore, with Figure 3 Unlike slot occupancy diagram 300, slot occupancy diagram 400 shows two interpretive slot groups of 12 slots each out of 48 slots, arranged in a manner consistent with each other. Figure 2 The substrate 200 forms multiple slots 210 of the machine component 110.

[0072] Therefore, in 1 to 24 Figure 3 Within the scope of slot numbering scheme 380, 24 slots in two explanatory slot groups arranged one after another are numbered individually on the substrate 200. Additionally, the slot represented by the number 48 in slot numbering scheme 380 is illustrated explanatoryly, corresponding to the third repetition of the slot represented by the number 12.

[0073] Two interpretive slot groups arranged one after the other illustrate the work done by... Figure 3 The multiphase winding 330 forms two pole pairs. The multiphase winding 330 is as follows: Figure 3 The windings are arranged in multiple slots 210 as described herein and are exemplarily composed of six phases 331, 332, 333, 334, 335, and 336, preferably according to the type of the plug-in winding 450. Here, so-called hairpin (or U-pin) or I-pin conductors can be used to implement the plug-in winding 450. The hairpin (or U-pin) conductor is an arc-shaped conductor adapted to form a predetermined number of slots or a pitch with a predetermined arc length. Preferably, an arc-shaped conductor is used, which is plugged into two slots of the multiple slots 210 respectively. For example, an arc-shaped conductor 451 is inserted into two slots 406 and 413 of the plurality of slots 210, an arc-shaped conductor 452 is inserted into two slots 413 and 418 of the plurality of slots 210, an arc-shaped conductor 453 is inserted into two slots 412 and 419 of the plurality of slots 210, and an arc-shaped conductor 454 is inserted into two slots 419 and 424 of the plurality of slots 210.

[0074] Here, at least one first arc conductor and one second arc conductor belonging to the first phase of the multiphase or six-phase winding 330 preferably have different winding pitches. It is preferable to predetermine different winding pitches in order to minimize torque fluctuations due to fifth and seventh harmonics.

[0075] Exemplarily, the arcuate conductor 451 has an arc length shaped with a radius for seven slots, and the arcuate conductor 452 has an arc length shaped with a radius for five slots. Explainedly, the arcuate conductor 451 crosses the slots located between these slots 406, 413 on the insertion side of the machine assembly 110 and protrudes from the slots 406, 413 on an opposite side of the machine assembly 110, wherein the arcuate conductor is inserted into the slots 406, 413 on the insertion side.

[0076] According to one embodiment, at least one of the plurality of phases 331, 332, 333, 334, 335, and 336 has a plurality of arcuate conductors, said plurality of arcuate conductors forming alternating winding pitches of five and seven slots, respectively. This will be explained below. Figure 5 The following is an example further described.

[0077] Figure 5 The following diagram illustrates the implementation. Figure 3 and Figure 4 An exemplary winding scheme 500 of the six-phase winding 330. Exemplarily, the winding scheme 500 is shown arranged on the machine assembly 110. Figure 3 and Figure 4 Phase 331 of the six-phase winding 330.

[0078] The winding scheme 500 is illustrated exemplarily. Figure 4 The arc-shaped conductors 451, 452 and other arc-shaped conductors 553, 554, 555, 556, in Figure 4 Inserted into the winding layers 381 and 382 according to slot numbering scheme 380 Figure 3 In the respective slots of the plurality of slots 210. These bow-shaped conductors 451, 452, 553, 554, 555, 556 are connected to each other at their free ends according to the winding scheme 500 to form phase 331, preferably by welding to each other with their respective welded connections 561, 562, 563, 564, 565, 566, 567, 568. This results in two parallel winding branches that form phase 331 and are interconnected by deflection connectors 570. The deflection connectors 570 interpretably form the winding pitch of the five slots.

[0079] Explained, at least phase 331 has a plurality of arcuate conductors, which respectively form alternating loops of five and seven slots. Exemplarily, arcuate conductors 451, 553, and 555 respectively form loops of seven slots, and alternately form loops of five slots with arcuate conductors 452, 554, and 556.

[0080] Figure 6 An exemplary winding scheme 600 is shown, illustrating the winding method according to... Figure 5 The construction of phase 331 of the winding scheme 500, and Figure 3 and Figure 4 The construction of phase 334. Explained, the use of... Figure 4 The bow-shaped conductors 453, 454 and other bow-shaped conductors 655, 656, 657, 658, respectively, form alternating winding pitches of five and seven slots and their free ends are connected to each other by their respective welded connections 661, 662, 663, 664, 665, 666, 667, 668.

[0081] Similar to phase 331, phase 334 includes a deflection connector 670. This deflection connector also achieves a pitch of only five slots.

[0082] It should be pointed out that, Figure 6Only phases 331 and 334 of the multiphase winding 330 have been explained. However, the remaining phases 333, 334, 335, and 336 are constructed similarly, and therefore, for the sake of simplicity and brevity, detailed descriptions of these phases 333, 334, 335, and 336 are omitted. It should only be noted that preferably each of phases 331, 332, 333, 334, 335, and 336 of the multiphase winding 330 has multiple arcuate conductors, which respectively form alternating pitches of five and seven slots.

[0083] The following exemplarily describes a method for manufacturing a machine assembly for an electric motor, wherein the machine assembly has a base having a plurality of slots and a plug-in winding having a plurality of arcuate conductors. Exemplarily regarding... Figures 3 to 6 The method is described in light of the manufacture of a machine assembly 110 having a multiphase winding 330.

[0084] Figure 7A A schematic diagram 700 is shown as an example, illustrating a preparatory stage (Etappe) for manufacturing a plurality of arcuate conductors, which are either staggered in five or seven slots and configured to achieve... Figure 3 and Figure 4 The six-phase winding 330. Therefore, firstly, a corresponding... Figure 2 The machine component 110 has a predetermined number of arcuate conductors 710 in multiple slots 210. Furthermore, an interlacing tool 720 is provided, having a torsion-resistant annular outer part 730 and an inner part 740 that is rotatable relative to the outer part, and is either annular or cylindrical, wherein the outer part 730 and the inner part 740 respectively have corresponding... Figure 2 The machine component 110 has multiple slots 210 belonging to a number of slots 731, 741.

[0085] For the purposes of reference only, eight of the total number of slots 731, 741 are denoted by reference numerals 732, 733, 734, 735, 742, 743, 744, and 745. Here, slots 732, 733, 734, and 735 are exemplary constructed in the outer component 730, and slots 742, 743, 744, and 745 are exemplary constructed in the inner component 740.

[0086] It should also be noted that, by way of example only and not as a limitation of the invention, the inner component 740 is described as being rotatable relative to the outer component 730. Alternatively, the outer component 730 may also be rotatable relative to the inner component 740.

[0087] At the start of the method for manufacturing multiple arcuate conductors, the interlacing tool 720 is adjusted to a starting position such that the arcuate conductors are interlaced with either five or seven slots and configured to achieve... Figure 3 and Figure 4 In the six-phase winding 330, in the initial position, the slots of the outer component 730 and the slots of the inner component 740 are respectively aligned in the radial direction of the interleaving tool 720 and form radial slot pairs 751. Explainedly, the slots 732, 733, 734, and 735 of the outer component 730 and the slots 742, 743, 744, and 745 of the inner component 740 are respectively aligned in the radial direction of the interleaving tool 720 and here form radial slot pairs 752, 753, 754, and 755.

[0088] Subsequently, preferably, each of the second radial slot pairs is provided with one of the arcuate conductors 710 in the circumferential direction of the interlacing tool 720. For example, radial slot pairs 752, 753, 754, and 755 are each provided with one of the arcuate conductors 710 in the circumferential direction of the interlacing tool 720.

[0089] Subsequently, preferably, the inner component 740 is rotated relative to the outer component 730 in a predetermined rotation direction 705 by a predetermined angle 792, which corresponds to the angular range of the two slots of the inner component 740. For example, here, the slot 743 of the inner component 740 rotates toward the slot 732 of the outer component 730, wherein the slot 743 forms a radial slot pair 753 with the slot 733 of the outer component 730 in the starting position of the interlacing tool 720.

[0090] Thus, the unequipped slots of the outer component 730 and the inner component 740 are respectively aligned in the radial direction of the interlacing tool 720, forming a pair of unequipped radial slots, as in Figure 7B As described in [the text].

[0091] Figure 7B A schematic diagram 770 is shown as an example, illustrating the next stage for manufacturing multiple arcuate conductors, which are either staggered in five or seven slots and configured to achieve... Figure 3 and Figure 4 The six-phase winding is 330. Here, Figure 7B Explanation provided based on evidence Figure 7A The interlacing tool 720 for the arc-shaped conductor 710 has an outer part 730 and an inner part 740 that are rotated relative to each other by two slots. (As in...) Figure 7A As described in the figure, this constitutes an unequipped radial slot pair 761, wherein four slot pairs are exemplarily and representatively indicated by reference numerals 762, 763, 764, and 765 only for all unequipped radial slot pairs.

[0092] Each unequipped radial slot is provided with one remaining, that is, not yet arranged in the interleaving tool 720, in the circumferential direction of the interleaving tool 720. Explainedly, each of the unequipped radial slot pairs 762, 763, 764, and 765 is provided with one of the remaining bow-shaped conductors 710 in the circumferential direction of the interleaving tool 720.

[0093] Subsequently, preferably, the inner component 740 is in relation to the outer component 730. Figure 7A The predetermined rotation direction 705 is rotated in the opposite direction 707 by a predetermined angle 794, which corresponds to the angle range of the seven slots 742 of the inner component 740, wherein the bow-shaped conductors 710 with five slots interlaced and the bow-shaped conductors 710 with seven slots interlaced are formed.

[0094] It should be pointed out that, in Figure 7A and Figure 7B The rotation of the inner component 740 relative to the torsion-resistant outer component 730 is described in the present invention. However, it should be noted that this is merely exemplary and should not be construed as limiting the invention. Conversely, the inner component 740 may also be torsion-resistant, wherein the outer component 730 rotates relative to the inner component 740, and thus the description can be considered representative of two variations.

[0095] Figure 8 It shows having Figure 2 A machine assembly 110 comprising a base 200 and a plurality of slots 210, the machine assembly being provided with, according to Figure 7A and Figure 7B Arcuate conductors with five slots interlaced and arcuate conductors with seven slots interlaced. Therefore, it is preferable to use... Figure 7A and Figure 7B After describing the method and steps, first start from according to Figure 7B The interleaving tool 720 extracts five-slot interleaved arc conductors 710 and seven-slot interleaved arc conductors 710, and from the insertion side 201 of the base 200, the base 200 of the machine assembly 110 is equipped with arc conductors, such as arc conductor 452, interleaved with five slots and arc conductors, such as arc conductor 451, interleaved with seven slots, in order to construct Figure 3 and Figure 4 The six-phase winding 330 is constructed according to the type of plug-in winding 450.

[0096] Figure 9 The following machine component 110 is shown, which has Figure 2 The base 200 and multiple grooves 210 are used to form Figure 3 and Figure 4The six-phase winding 330, the machine component according to Figure 8 There are arc-shaped conductors with five slots interlaced and arc-shaped conductors with seven slots interlaced, these arc-shaped conductors from... Figure 8 The insertion side 201 is inserted into the base 200. Here, in Figure 9 The text explains the connection side 202 of the substrate 200, which is axially opposite to the insertion side 201 of the substrate 200.

[0097] To construct a six-phase winding 330, each free end of either a five-slot staggered arcuate conductor used for implementing another winding pitch, or a seven-slot staggered arcuate conductor used for implementing another winding pitch, is first radially bent outward by one conductor thickness in the radial direction of the base 200. Subsequently, in Figure 7A On the predetermined rotation direction 705, all free ends of the innermost, five-slot staggered and seven-slot staggered arc-shaped conductors arranged in the radial direction of the substrate 200 are staggered in six slots. Then, all free ends of the second innermost, five-slot staggered and seven-slot staggered arc-shaped conductors arranged in the radial direction of the substrate are staggered in six slots. Figure 7A The pre-given rotation direction is opposite to 705. Figure 7B The rotation direction 707 has five staggered slots. Then, in conjunction with... Figure 7A The pre-given rotation direction is opposite to 705. Figure 7B On the rotation direction 707, the curved free end is arranged in seven slots in a manner that passes through the second innermost staggered free end.

[0098] Thus, the free ends of the arc-shaped conductors with five staggered slots and the arc-shaped conductors with seven staggered slots are arranged aligned in the radial direction of the substrate. These aligned free ends are preferably connected to each other by welding.

[0099] Finally, for each phase of the six-phase winding, a deflection connector is arranged on the six-phase winding to form the phase. Here, each deflection connector is preferably connected to its corresponding phase by soldering.

Claims

1. A machine assembly (110, 120) for a motor (100) having six-phase windings, comprising a base (200) having a plurality of slots (210) and a multiphase winding (330), wherein each of the plurality of slots (210) is occupied only by a particular phase (331, 332, 333, 334, 335, 336) of the multiphase winding (330), and the multiphase winding (330) is a plug-in winding (450) in which arcuate conductors (451, 452, 453, 454) are respectively plugged into two slots (406, 412, 413, 418, 419, 424) of the plurality of slots (210), characterized in that, At least a first arc conductor (451) and a second arc conductor (452) of the first phase (331) of the multiphase winding (330) form different winding pitches, wherein the first arc conductor (451) has a first arc length shaped for a winding pitch of seven slots, and the second arc conductor (452) has a second arc length shaped for a winding pitch of five slots, wherein the different winding pitches are given in advance in order to minimize torque fluctuations due to fifth and seventh harmonics.

2. The machine component according to claim 1, characterized in that, The first phase (331) has a plurality of arc-shaped conductors (451, 452, 553, 554, 555, 556), which respectively form an alternating winding pitch of five and seven slots.

3. The machine component according to claim 1, characterized in that, Each phase (331, 332, 333, 334, 335, 336) of the multiphase winding (330) has multiple arcuate conductors (451, 452, 453, 454, 553, 554, 555, 556, 655, 656, 657, 658), which respectively form an alternating winding pitch of five and seven slots.

4. The machine component according to any one of claims 1 to 3, characterized in that, The multiphase winding (330) is a six-phase winding having two three-phase misaligned sub-winding systems (360, 370) with an electrical offset of 0°.

5. The machine assembly according to any one of claims 1 to 3, wherein it is provided for a motor (100) constructed according to the type of electrically excited synchronous motor, characterized in that, The multiphase winding (330) includes 6 phases and forms n*2 poles, and the plurality of slots (210) has n*12 slots, where n is an integer.

6. A method for manufacturing machine components (110, 120) of an electric motor (100) having six-phase windings, wherein, The machine assembly (110, 120) has a base (200) having a plurality of slots (210) and a plug-in winding (450) having a plurality of arc-shaped conductors (451, 452, 453, 454), characterized by the following steps: a) Provide a predetermined number of arcuate conductors (710) corresponding to the plurality of slots (210), b) Provide an interlacing tool (720) having a torsion-resistant annular outer part (730) and an annular or cylindrical inner part (740) rotatable relative to the outer part, wherein the outer part (730) and the inner part (740) each have a corresponding number of slots (732, 733, 734, 735, 742, 743, 744, 745) corresponding to the plurality of slots (210), c) Set the interlacing tool (720) to a starting position in which the corresponding number of slots (732, 733, 734, 735) of the outer part (730) and the corresponding number of slots (742, 743, 744, 745) of the inner part (740) are respectively aligned in the radial direction of the interlacing tool (720) and form radial slot pairs (752, 753, 754, 755). d) Each of the second radial slot pairs (753, 755) is equipped with an arcuate conductor (710) in the circumferential direction of the interlacing tool (720). e) Rotate the inner component (740) relative to the outer component (730) by a predetermined angle (792) in a predetermined rotation direction (705), the predetermined angle corresponding to the angular range of the two slots (742) of the inner component (740), wherein the unequipped slots (732, 734) of the outer component (730) and the inner component (740) are respectively aligned in the radial direction of the interlacing tool (720) and form unequipped radial slot pairs (762, 763, 764, 765). f) Each of the unequipped radial slot pairs (762, 763, 764, 765) is equipped with an arcuate conductor (710) in the circumferential direction of the interlacing tool (720), and g) The inner component (740) is rotated relative to the outer component (730) by a predetermined angle (794) in a rotation direction (707) opposite to the predetermined rotation direction (705), the predetermined angle corresponding to the angular range of the seven slots (742) of the inner component (740), wherein an arcuate conductor (452) with five slots interlaced and an arcuate conductor (451) with seven slots interlaced are formed, wherein different winding pitches are predetermined for the arcuate conductor (452) with five slots interlaced and the arcuate conductor (451) with seven slots interlaced in order to minimize at least the torque fluctuations due to the fifth and seventh harmonics.

7. The method according to claim 6, characterized in that: Additional steps: a) Remove the five-slot staggered arc conductor (452) and the seven-slot staggered arc conductor (451) from the staggering tool (720), and b) Starting from the plug-in side (201) of the base (200), the base (200) of the machine assembly (110, 120) is equipped with the bow-shaped conductors (452) with five slots interlaced and the bow-shaped conductors (451) with seven slots interlaced.

8. The method according to claim 7, characterized in that The following additional steps are performed on the connection side (202) of the substrate (200) that is axially opposite to the insertion side (201) of the substrate (200): a) Each free end of either the five-slot staggered arc conductor (452) or the seven-slot staggered arc conductor (451) configured to implement additional pitch is radially outwardly bent by a conductor thickness in the radial direction of the substrate (200). b) All free ends of the innermost arcuate conductors (452) and arcuate conductors (451) arranged in the radial direction of the substrate (200) with five slots interlaced and seven slots interlaced in a predetermined rotation direction (705) with six slots interlaced. c) All free ends of the second innermost arcuate conductor (452) and the arcuate conductor (451) arranged in the radial direction of the substrate (200) with five slots interlaced and seven slots interlaced in a rotation direction (707) opposite to the pre-given rotation direction (705), and d) The free ends that were bent in step a) are arranged in seven slots in a rotation direction (707) opposite to the pre-given rotation direction (705), in a manner that passes through the free ends that were interlaced in step c).

9. The method according to claim 8, characterized in that... The following additional steps are performed on the connection side (202) of the substrate (200), which is axially opposite to the insertion side (201) of the substrate (200): a) Connect the free ends of the arcuate conductors (452) and the arcuate conductors (451) arranged in the radial direction of the substrate (200) with five slots interlaced to each other.

10. The method according to claim 9, characterized in that, The free ends are connected to each other by welding.

11. The method according to claim 9 or 10, characterized in that, For each phase of the plug-in winding (450), a deflection connector (570, 670) for constituting the phase is arranged on the plug-in winding (450).

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