WO2023111074A1 - Stator for a rotating three-phase machine - Google Patents

Stator for a rotating three-phase machine Download PDF

Info

Publication number
WO2023111074A1
WO2023111074A1 PCT/EP2022/085948 EP2022085948W WO2023111074A1 WO 2023111074 A1 WO2023111074 A1 WO 2023111074A1 EP 2022085948 W EP2022085948 W EP 2022085948W WO 2023111074 A1 WO2023111074 A1 WO 2023111074A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
coil
stator coil
connection
arrangement
Prior art date
Application number
PCT/EP2022/085948
Other languages
German (de)
French (fr)
Inventor
Ernst August Werner
Bernhard Burkhart
Original Assignee
ENGIRO GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ENGIRO GmbH filed Critical ENGIRO GmbH
Publication of WO2023111074A1 publication Critical patent/WO2023111074A1/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in machines
    • H02K15/062—Windings in slots; salient pole windings
    • H02K15/064—Windings consisting of separate segments, e.g. hairpin windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2203/00—Specific aspects not provided for in the other groups of this subclass relating to the windings
    • H02K2203/09—Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations

Definitions

  • the present invention relates to a stator for a rotating induction machine according to the preamble of claim 1 and a rotating induction machine with such a stator according to claim 11.
  • the induction machine in question can be used for a large number of applications.
  • Exemplary applications are electric motors and generators for land, air and water vehicles.
  • Other use cases can be found in the field of industrial automation and power generation.
  • the well-known stator of an induction machine shows the usual structure of a stator base body with stator slots which are distributed around a geometric machine axis assigned to the stator.
  • the stator slots accommodate a stator coil arrangement with a plurality of stator coils, which are each formed from a plurality of dimensionally stable hairpins connected in series.
  • the stator coils are firmly combined into three coil strands by mechanically and electrically connecting the hairpins on the back of the stator.
  • the three strands of coils can be connected to the phases of a rotating supply voltage to generate a rotating magnetic field.
  • the above hairpin technology is increasingly finding its way into modern stator windings, because the dimensionally stable hairpins can easily be automated compared to traditional winding technology. Furthermore, with a suitable selection of the cross section of the hairpins, the line density in the individual stator slots is comparatively high. However, the flexibility in connecting the individual coils is extremely low.
  • the invention is based on the problem of designing and developing the known stator in such a way that the flexibility in the connection of the individual coils is increased with little effort.
  • the above problem is solved in a stator according to the preamble of claim 1 by the features of the characterizing part of claim 1.
  • connection pins in addition to the hairpins, dimensionally stable connection pins can also be provided, which can be electrically interconnected via an interconnection arrangement on the front side of the stator. This results in almost unlimited flexibility when connecting the stator coils, as shown below.
  • each stator slot in the stator base body in relation to the machine axis, extends axially from a front side of the stator to a rear side of the stator and radially from a stator inside to a stator outside.
  • the stator has a stator coil arrangement which runs at least partially in the stator slots and which can be connected to a rotary supply voltage in order to generate a rotary magnetic field.
  • the stator coil arrangement forms a plurality of stator coil strands, each consisting of a plurality of stator coils, each of which has a coil width of at least two stator slots, the stator coil strands being connectable to a rotary supply voltage to generate a rotary magnetic field.
  • the stator coils each have a plurality of coil turns, with each stator coil being formed from a plurality of series-connected, dimensionally stable hairpins of the first type, each of which has two hairpin legs protruding from a connecting leg, at least in part in the manner of a U-shape.
  • the hairpin legs of the hairpins of the first type run, starting from the connecting leg, from the front of the stator to the rear of the stator in the stator slots.
  • the hairpin legs are mechanically and electrically connected on the rear side of the stator to generate the coil windings.
  • stator coils is additionally assigned at least one dimensionally stable, single-leg connection pin, which runs from the front of the stator to the rear of the stator and which is mechanically and electrically connected to the coil start or the coil end of the respective stator coil on the rear of the stator.
  • This coil attachment is preferably fang or this coil end is electrically connected exclusively to the associated connection pin.
  • connection pins it is preferably the case that a plurality of such dimensionally stable connection pins are provided.
  • the term “several” should always be understood to mean that more than two of the relevant entities, here more than two connection pins, are provided.
  • stator has an interconnection arrangement on the front side of the stator, via which the connection pins are interconnected to define the stator coil strands and/or to the rotary supply voltage to generate the rotary magnetic field.
  • stator coil strands via the interconnection arrangement means that the interconnection of the connection pins via the interconnection arrangement produces a resultant interconnection of the relevant stator coils to form a stator coil strand.
  • generation of the rotary magnetic field via the interconnection arrangement means that the interconnection of the connection pins via the interconnection arrangement generates a resulting interconnection of the stator coils with the rotary supply voltage and thus a resulting rotary magnetic field.
  • connection pin it has been possible to guide the coil beginning and/or the coil end of the stator coils to the front side of the stator in a targeted manner by means of a connection pin, so that the interaction of the interconnection arrangement with the connection pins enables a particularly flexible interconnection of the connection pins and thus of the stator coil.
  • the preferred configurations according to claims 2 to 6 relate to preferred structural combinations of the stator coils in order to produce, for example, a stator coil module from two stator coil groups connected in series or in parallel, in particular wound in opposite directions and thus energized in opposite directions.
  • the stator coil assembly has a plurality of such stator coil modules along of the circumference of the stator are distributed in the stator slots. An arrangement of stator coils that repeats itself over the circumference of the stator can thus be produced.
  • the further preferred configurations according to claims 8 and 9 relate to advantageous variants for the wiring arrangement on the front side of the stator.
  • a particularly high degree of flexibility results from the fact that at least part of the interconnection arrangement can be placed on the stator, as a result of which the at least one connection pin can be electrically interconnected and/or connected to the phases of the rotary supply voltage. It is easy to imagine that the use of different wiring arrangements leads to flexible modifiability of the wiring of the stator coils.
  • a rotating induction machine with a proposed stator and a rotor is claimed.
  • the rotor can have, for example, a corresponding permanent magnet arrangement for the interaction with the stator coil arrangement.
  • FIG. 1 shows a proposed stator a) looking at the front side of the stator and b) looking at the rear side of the stator,
  • FIG. 2 shows a stator coil of the stator coil arrangement of the stator according to FIG. 1 in a perspective view
  • FIG. 3 shows a stator coil module of the stator coil arrangement of the stator according to FIG. 1, in which a) the hairpin of the first type is exposed b) the circuit pin is exposed, c) the hairpin of the second type is exposed and d) a part of the circuit arrangement is exposed,
  • FIG. 4 shows the coil module according to FIG. 3 a) without the stator base body and b) with the stator base body
  • FIG. 5 shows the wiring arrangement of the stator according to FIG. 1 in the dismantled state a) from the front and b) from the rear,
  • the stator 1 shown in FIG. 1 can be used for a wide range of rotating induction machines, in particular electric motors and generators. This includes, for example, synchronous machines that can be self-excited or externally excited, asynchronous machines or the like.
  • the stator 1 preferably has a hollow stator interior 2 for accommodating a rotor (not shown).
  • the rotor can also be arranged outside of the stator 1 if the induction machine is an external rotor. Then the stator interior 2 can even be dispensed with.
  • the stator 1 shows a metallic stator base body 3 , with the stator 1 being assigned a geometric machine axis 4 and stator slots 5 distributed around it in the stator base body 3 .
  • Each stator slot 5 extends, in relation to the machine axis 4, axially from a stator front 6 to a stator rear 7 and radially from a stator inside 8 to a stator outside 9.
  • the stator 1 has a stator coil arrangement 10, which is at least partially in the stator slots 5 runs.
  • the stator coil assembly 10 serves to generate a rotary magnetic field that interacts with a rotor above.
  • the stator coil arrangement 10 forms electromagnetic poles in the energized state, the formation of which tion depends on the structure of the stator coil assembly 10.
  • the proposed solution can be mapped with different structures for the stator coil arrangement 10 .
  • the stator coil arrangement 10 forms several, here and preferably three, stator coil strands 11, 12, 13, each consisting of several stator coils 14-17, each of which has a coil width 18 of at least two stator slots 5, here six stator slots 5.
  • stator coil assembly is to be interpreted broadly in the present case. It includes any interconnection of a number of stator coils 14-17.
  • the stator coil strands 11, 12, 13 can be connected to a rotary supply voltage u, v, w to generate the rotary magnetic field.
  • the rotating supply voltage u, v, w can be a supply voltage with any number of phases, but preferably with three phases.
  • a stator coil 14-17 is shown as such in FIG.
  • the coil cross section of the stator coil 14-17 can be set within a wide range within the scope of the proposed solution.
  • stator coils 14-17 each have a plurality of coil windings 19, with each stator coil 14-17 being formed from a plurality of series-connected, dimensionally stable, two-legged hairpins of the first type 20.
  • the hairpins of the first type 20 each have two hairpin legs 22, 23 protruding from a connecting leg 21, at least in part in the manner of a U-shape.
  • the hairpin legs 22, 23 of the hairpins of the first type 20 run, starting from the connecting leg 21, from the front side 6 of the stator to the rear side 7 of the stator in the stator slots 5. They are mechanically and electrically connected on the rear side 7 of the stator, in particular welded. This can best be seen from the representation according to FIG.
  • stator coils 14-17 of the coil arrangement preferably several stator coils 14-17, more preferably more than half of the stator coils 14-17, more preferably all stator coils 14-17, additionally have at least one dimensionally stable, single-leg connection pin 24-29 is assigned, which runs from the stator front 6 to the stator rear 7 and on the stator rear 7 with the coil beginning or the coil end of the respective stator coil 14-17 is mechanically and electrically connected.
  • 2 shows by way of example that the beginning of the coil or the end of the coil in question is routed to the front of the stator 6 via the connection pin 24-29 in question, so that the beginning of the coil or the end of the coil in question can be connected from the front of the stator 6.
  • connection pin 24-29 is preferably designed in such a way that it projects beyond the stator coil arrangement 10 on the front side of the stator 6, preferably in the axial direction in relation to the machine axis 4, so that simple interconnection by means of the interconnection arrangement 30 is possible.
  • connection pins 24-29 are single-legged.
  • the shape of the connection pin 24-29 without the overhang preferably corresponds essentially to the shape of half a hairpin of the first type 20 when the hairpin of the first type 20 is divided into two equal halves along an axial line of symmetry.
  • the hairpins of the first type 20 and the connection pins 24-29 can be produced using the same production technology, in particular bending technology.
  • the hairpins of the first type 20 and the connection pins 24-29 can be manufactured on the same production line.
  • the stator 1 has a wiring arrangement 30 on the front side 6 of the stator, via which the connection pins 24-29 are connected to one another to define the stator coil strands 11-13 and/or to the rotary supply voltage u, v, w to generate the rotary magnetic field .
  • the interconnection arrangement 30 can be composed of a plurality of individual, bridge-like electrical conductors. A particularly simple interconnection results from the fact that the interconnection arrangement 30 is designed to be continuous and can therefore be handled individually.
  • the stator 1 preferably has a plurality of stator coil groups 31 , 32 , a stator coil group 31 , 32 being defined in that the stator coil group 31 , 32 has a first stator coil 14 and a second stator coil 15 connected in series or parallel thereto.
  • a stator coil group 31, 32 can have more than two stator coils 14, 15.
  • the stator coil group 31, 32 is a pair of stator coils 31, 32 made up of the first stator coil 14 and the second stator coil 15.
  • the term “group” can therefore preferably be replaced by the term “pair” throughout the following.
  • first stator coil 14 and the second stator coil 15 are arranged offset from one another by exactly one stator slot 5 .
  • This offset can also include several stator slots 5 .
  • the first stator coil 14 and the second stator coil 15 are preferably wound in the same direction, with the coil end of the first stator coil 14 and the coil start of the second coil 15 being assigned a connection pin 25, 26, and these two connection pins 25, 26 being used to produce the series connection or Parallel connection on the stator front 6 by means of the interconnection arrangement 30, in particular by means of a radial bridge 33, are connected.
  • the term "radial bridge” describes a bridge made of an electrical conductor that bridges a distance in relation to the machine axis 4 in the radial direction.
  • stator 1 has a plurality of stator coil modules 35-58 made up of at least one stator coil 14-17, preferably a plurality of stator coils 14-17.
  • stator coil module 35 Based on the stator coil module 35 is shown in Fig. 3a that the stator coil module 35 here and preferably by at least two series or parallel, in particular wound in opposite directions and thus energized in opposite directions, stator coil groups 31, 32, preferably a primary stator coil group 31 and a Secondary stator coil group 32 is formed.
  • stator coil groups 31, 32 are arranged offset from one another by a plurality of stator slots 5 and/or by a coil width 18.
  • the hairpin legs 61, 62 of the hairpins of the second type 59 run starting from the Connecting leg 60 from the front of the stator 6 to the rear of the stator 7 in the stator slots 5, the hairpin of the second type 59 on the rear of the stator 7 connecting the series connection or parallel connection between the stator coil groups 31, 32, in particular by connecting the coil end of the second coil 15 of the primary stator coil group 31 with the beginning of the coil of the first coil 16 of the secondary stator coil group 32 produces.
  • the hairpin of the second type 59 can be arranged not only in the area of the outside of the stator 9 (Fig. 3c), but also in the area of the inside of the stator 8 or at any point between the outside of the stator 9 and the inside of the stator 8 .
  • the hairpins of the first type 20 and/or the hairpins of the second type 59 and/or the connection pins 24-29 are each made of a dimensionally stable, elongated, metallic electrical conductor material, preferably made of copper. You can each have a largely arbitrary cross-section. In this case, square or rectangular cross sections are particularly advantageous since a particularly high line density in the stator slots 5 can be achieved with such cross sections.
  • the hairpins of the first type 20 and/or the hairpins of the second type 59 and/or the connection pins 24-29 are preferably bent into the relevant shape.
  • the hairpins of the first type 20 and/or the hairpins of the second type 59 and/or the connection pins 24-29 are also preferably made from the identical electrical conductor material, which simplifies the manufacture of these components.
  • connection pin 24-29 the coil end of the second coil 15 of the primary stator coil group 31 and the coil start of the first coil 16 of the secondary stator coil group 32 are each assigned a connection pin 24-29, with these connection pins 24-29 being used to generate the series connection or parallel connection between the stator coil groups 31 , 32 are connected by means of the interconnection arrangement 30, in particular by means of a tangential bridge.
  • tangential bridge describes a bridge made of an electrical conductor that bridges a distance in relation to the machine axis 4 in the tangential direction.
  • the stator coil modules 35-58 each provide at least two module terminals 63, 64 for connection to the rotary supply voltage u, v, w, as shown for the stator coil module 35 in Figure 3a.
  • a connection pin 24 is assigned to the coil start of the first coil 14 of the primary coil group 31 for each stator coil module 35-58, while a further connection pin 29 is assigned to the coil end of the second coil 17 of the secondary coil group 32.
  • These connection pins 24, 29 provide the module connections 63, 64 of the respective stator coil module 35-58 for connection to the rotating supply voltage u, v, w.
  • stator coil arrangement 10 preferably has a plurality of stator coil modules 35-58 which are distributed along the circumference of the stator 1 in the stator slots 5, the stator coil modules 35-58 being interconnected by the connection pins 24-29 by means of the interconnection arrangement 30 Stator coil strands 11, 12, 13 form.
  • the interconnection arrangement 30 preferably serves to connect the stator coil arrangement 10 to the rotary supply voltage u, v, w.
  • the interconnection arrangement 30 can be used to disconnect the coil strands 11, 12, 13 from the stator coil modules 35-58 via the module connections 63, 64 in a predetermined connection to the phases of the rotating supply voltage u, v, w.
  • the predetermined connection can be, for example, a delta connection according to FIG. 6 or a star connection according to FIG. 7, which additionally requires a plurality of star bridges 72 .
  • the star bridges 72 in Fig. 7 are part of the interconnection arrangement 30.
  • the interconnection arrangement 30 is designed here and preferably in a partially continuous manner.
  • the interconnection arrangement 30 has at least one connected interconnection ring 65 placed on the front side of the stator 6, via which the connection pins 24-29 are used to define the stator coil strands 11-13 with one another and/or to generate the rotating magnetic field with the rotating supply voltage u, v, w are interconnected. It is preferably the case that the interconnection ring 65 provides a radial bridge 33 and/or a tangential bridge 72 for at least some of the stator coil modules 35-58.
  • the interconnection ring 65 is used to connect the connection pins 24-29 to generate the rotary magnetic field with the rotary supply voltage u, v, w.
  • the interconnection ring 65 has at least three partial rings 66, 67, 68 , which are each electrically connected to one phase of the rotary supply voltage u, v, w and each have a connection extension 69, 70, 71 for electrical contact with the relevant connection pin 24-29.
  • the interconnection arrangement 30 can have at least one cohesive first-type interconnection ring placed on the front side of the stator 6, via which the connection pins 24-29 are interconnected to define the stator coil strands 11-13, and for the interconnection arrangement 30 to have at least one cohesive, on the front side of the stator 6 and/or on the first type of interconnection ring has an interconnection ring of the second type, via which the connection pins 24-29 for generating the rotary magnetic field are connected to the rotary supply voltage u, v, w.
  • a particularly cost-effective implementation of the proposed solution can be achieved in that the hairpins of the first type 20 of all the stator coils 14-17 are configured identically to one another.
  • provision can be made accordingly for the hairpins of the second type 59 of all the stator coil modules 35-58 to be configured identically to one another.
  • connection pins of all stator coils 14-17 are configured identically to one another.
  • the hairpins of the first type 20 and the hairpins of the second type 59 are shaped differently in order to be able to take account of the different geometric requirements.
  • a rotating induction machine (not shown) with a proposed stator 1 and a rotor which interacts magnetically with the stator coil arrangement 10 is claimed as such.
  • the induction machine can be an electric motor or generator. Any machine can types are used. Examples of this are synchronous machines, which can be self-excited or externally excited, asynchronous machines or the like.

Landscapes

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

Abstract

The invention relates to a stator for a rotating three-phase machine, having a stator main body (3), wherein the stator (1) has a stator coil arrangement (10) which at least in part runs in stator slots (5), wherein the stator coil arrangement (10) forms a plurality of stator coil sections (11-13), each composed of a plurality of stator coils (14-17), wherein the stator coil sections (11-13) can be connected to a three-phase supply voltage (u, v, w) for generating a rotating magnetic field, wherein each stator coil (14-17) is formed from a plurality of dimensionally stable, two-limb hairpins of a first type (20) which are connected in series. The invention proposes that at least some of the stator coils (14-17) additionally have at least one dimensionally stable, single-limb connection pin (24-29) which runs from the stator front side (6) to the stator rear side (7) and, on the stator rear side (7), is mechanically and electrically connected to the coil start or the coil end of the respective stator coil (14-17), and that the stator (1), on the stator front side (6), has an interconnection arrangement (30) via which the connection pins (24-29) are electrically interconnected with one another for defining the stator coil sections (11-13).

Description

Stator für eine rotierende Drehfeldmaschine Stator for a rotating induction machine
Die vorliegende Erfindung betrifft einen Stator für eine rotierende Drehfeldmaschine gemäß dem Oberbegriff von Anspruch 1 sowie eine rotierende Drehfeldmaschine mit einem solchen Stator gemäß Anspruch 11. The present invention relates to a stator for a rotating induction machine according to the preamble of claim 1 and a rotating induction machine with such a stator according to claim 11.
Die in Rede stehende Drehfeldmaschine lässt sich für eine Vielzahl von Anwendungsfällen einsetzen. Beispielhafte Anwendungsfälle sind elektrische Motoren und Generatoren für Land-, Luft- und Wasserfahrzeuge. Weitere Anwendungsfälle finden sich im Bereich der industriellen Automatisierung und der Stromerzeugung. The induction machine in question can be used for a large number of applications. Exemplary applications are electric motors and generators for land, air and water vehicles. Other use cases can be found in the field of industrial automation and power generation.
Der bekannte Stator einer Drehfeldmaschine (DE 10 2019 219 683 A1), von dem die Erfindung ausgeht, zeigt den üblichen Aufbau aus einem Statorgrundkörper mit Statornuten, die um eine geometrische, dem Stator zugeordnete Maschinenachse herum verteilt angeordnet sind. Die Statornuten nehmen eine Statorspulenanordnung mit mehreren Statorspulen auf, die jeweils aus mehreren in Reihe geschalteten, formstabilen Hairpins gebildet werden. Die Statorspulen sind fest zu drei Spulensträngen kombiniert, indem die Hairpins auf der Hinterseite des Stators entsprechend mechanisch und elektrisch miteinander verbunden sind. Die drei Spulenstränge lassen sich zur Erzeugung eines Dreh- Magnetfelds an die Phasen einer Dreh-Versorgungsspannung anschließen. The well-known stator of an induction machine (DE 10 2019 219 683 A1), on which the invention is based, shows the usual structure of a stator base body with stator slots which are distributed around a geometric machine axis assigned to the stator. The stator slots accommodate a stator coil arrangement with a plurality of stator coils, which are each formed from a plurality of dimensionally stable hairpins connected in series. The stator coils are firmly combined into three coil strands by mechanically and electrically connecting the hairpins on the back of the stator. The three strands of coils can be connected to the phases of a rotating supply voltage to generate a rotating magnetic field.
Die obige Hairpintechnologie hält zunehmend Einzug in moderne Statorwicklungen, denn die formstabilen Hairpins lassen sich verglichen mit der traditionellen Wickeltechnik ohne Weiteres automatisiert handhaben. Ferner ist bei geeigneter Wahl des Querschnitts der Hairpins die Leitungsdichte in den einzelnen Statornuten vergleichsweise hoch. Allerdings ist die Flexibilität bei der Verschaltung der einzelnen Spulen außerordentlich gering. The above hairpin technology is increasingly finding its way into modern stator windings, because the dimensionally stable hairpins can easily be automated compared to traditional winding technology. Furthermore, with a suitable selection of the cross section of the hairpins, the line density in the individual stator slots is comparatively high. However, the flexibility in connecting the individual coils is extremely low.
Der Erfindung liegt das Problem zugrunde, den bekannten Stator derart auszugestalten und weiterzubilden, dass die Flexibilität bei der Verschaltung der einzelnen Spulen mit geringem Aufwand erhöht wird. Das obige Problem wird bei einem Stator gemäß dem Oberbegriff von Anspruch 1 durch die Merkmale des kennzeichnenden Teils von Anspruch 1 gelöst. The invention is based on the problem of designing and developing the known stator in such a way that the flexibility in the connection of the individual coils is increased with little effort. The above problem is solved in a stator according to the preamble of claim 1 by the features of the characterizing part of claim 1.
Der Erfindung liegt die Überlegung zugrunde, dass neben den Hairpins zusätzlich formstabile Anschlusspins vorgesehen sein können, die über eine Verschaltungsanordnung an der Statorvorderseite elektrisch miteinander verschaltbar sind. Dadurch ergibt sich eine nahe unbegrenzte Flexibilität bei der Verschaltung der Statorspulen, wie im Folgenden gezeigt wird. The invention is based on the consideration that, in addition to the hairpins, dimensionally stable connection pins can also be provided, which can be electrically interconnected via an interconnection arrangement on the front side of the stator. This results in almost unlimited flexibility when connecting the stator coils, as shown below.
Zunächst einmal wird davon ausgegangen, dass sich jede Statornut im Statorgrundkörper, jeweils bezogen auf die Maschinenachse, axial von einer Statorvorderseite zu einer Statorhinterseite und radial von einer Statorinnenseite zu einer Statoraußenseite erstreckt. Der Stator weist eine Statorspulenanordnung auf, die zumindest zum Teil in den Statornuten verläuft und die zur Erzeugung eines Dreh-Magnetfelds an eine Dreh-Versorgungsspannung anschließbar ist. First of all, it is assumed that each stator slot in the stator base body, in relation to the machine axis, extends axially from a front side of the stator to a rear side of the stator and radially from a stator inside to a stator outside. The stator has a stator coil arrangement which runs at least partially in the stator slots and which can be connected to a rotary supply voltage in order to generate a rotary magnetic field.
Die Statorspulenanordnung bildet mehrere Statorspulenstränge, jeweils aus mehreren Statorspulen aus, die jeweils eine Spulenbreite von mindestens zwei Statornuten aufweisen, wobei die Statorspulenstränge zur Erzeugung eines Dreh-Magnetfelds an eine Dreh-Versorgungsspannung anschließbar sind. The stator coil arrangement forms a plurality of stator coil strands, each consisting of a plurality of stator coils, each of which has a coil width of at least two stator slots, the stator coil strands being connectable to a rotary supply voltage to generate a rotary magnetic field.
Die Statorspulen weisen jeweils mehrere Spulenwindungen auf, wobei jede Statorspule aus mehreren in Reihe geschalteten, formstabilen Hairpins erster Art gebildet wird, die jeweils zumindest zum Teil nach Art einer U-Form zwei von einem Verbindungsschenkel abragende Hairpinschenkel aufweisen. Die Hairpinschenkel der Hairpins erster Art verlaufen ausgehend von dem Verbindungsschenkel von der Statorvorderseite zu der Statorhinterseite in den Statornuten. Die Hairpinschenkel sind auf der Statorhinterseite zur Erzeugung der Spulenwindungen mechanisch und elektrisch verbunden. The stator coils each have a plurality of coil turns, with each stator coil being formed from a plurality of series-connected, dimensionally stable hairpins of the first type, each of which has two hairpin legs protruding from a connecting leg, at least in part in the manner of a U-shape. The hairpin legs of the hairpins of the first type run, starting from the connecting leg, from the front of the stator to the rear of the stator in the stator slots. The hairpin legs are mechanically and electrically connected on the rear side of the stator to generate the coil windings.
Wesentlich ist, dass zumindest einem Teil der Statorspulen zusätzlich mindestens ein formstabiler, einschenkliger Anschlusspin zugeordnet ist, der von der Statorvorderseite zu der Statorhinterseite verläuft und der auf der Statorhinterseite mit dem Spulenanfang oder dem Spulenende der jeweiligen Statorspule mechanisch und elektrisch verbunden ist. Vorzugsweise ist dieser Spulenan- fang bzw. dieses Spulenende elektrisch ausschließlich mit dem zugeordneten Anschlusspin verbunden. It is essential that at least one part of the stator coils is additionally assigned at least one dimensionally stable, single-leg connection pin, which runs from the front of the stator to the rear of the stator and which is mechanically and electrically connected to the coil start or the coil end of the respective stator coil on the rear of the stator. This coil attachment is preferably fang or this coil end is electrically connected exclusively to the associated connection pin.
Vorzugsweise ist es so, dass mehrere solcher formstabiler Anschlusspins vorgesehen sind. Der Begriff "mehrere" ist vorliegend stets so zu verstehen, dass mehr als zwei der betreffenden Entitäten, hier mehr als zwei Anschlusspins, vorgesehen sind. It is preferably the case that a plurality of such dimensionally stable connection pins are provided. In the present case, the term “several” should always be understood to mean that more than two of the relevant entities, here more than two connection pins, are provided.
Wesentlich ist weiter, dass der Stator an der Statorvorderseite eine Verschaltungsanordnung aufweist, über die die Anschlusspins zur Definition der Statorspulenstränge miteinander und/oder zur Erzeugung des Dreh-Magnetfelds mit der Dreh-Versorgungsspannung verschaltet sind. It is also important that the stator has an interconnection arrangement on the front side of the stator, via which the connection pins are interconnected to define the stator coil strands and/or to the rotary supply voltage to generate the rotary magnetic field.
Die obige Definition der Statorspulenstränge über die Verschaltungsanordnung bedeutet, dass die Verschaltung der Anschlusspins über die Verschaltungsanordnung eine resultierende Verschaltung der betreffenden Statorspulen zu einem Statorspulenstrang erzeugt. Die obige Erzeugung des Dreh-Magnetfelds über die Verschaltungsanordnung bedeutet, dass die Verschaltung der Anschlusspins über die Verschaltungsanordnung eine resultierende Verschaltung der Statorspulen mit der Dreh-Versorgungsspannung und damit ein resultierendes Dreh-Magnetfeld erzeugt. The above definition of the stator coil strands via the interconnection arrangement means that the interconnection of the connection pins via the interconnection arrangement produces a resultant interconnection of the relevant stator coils to form a stator coil strand. The above generation of the rotary magnetic field via the interconnection arrangement means that the interconnection of the connection pins via the interconnection arrangement generates a resulting interconnection of the stator coils with the rotary supply voltage and thus a resulting rotary magnetic field.
Mit der vorschlagsgemäßen Lösung ist es gelungen, den Spulenanfang und/oder das Spulenende der Statorspulen gezielt mittels eines Anschlusspins auf die Statorvorderseite zu führen, sodass durch die Wechselwirkung der Verschaltungsanordnung mit den Anschlusspins eine besonders flexible Verschaltung der Anschlusspins und damit der Statorspule möglich ist. With the proposed solution, it has been possible to guide the coil beginning and/or the coil end of the stator coils to the front side of the stator in a targeted manner by means of a connection pin, so that the interaction of the interconnection arrangement with the connection pins enables a particularly flexible interconnection of the connection pins and thus of the stator coil.
Die bevorzugten Ausgestaltungen gemäß den Ansprüchen 2 bis 6 betreffen bevorzugte strukturelle Kombinationen der Statorspulen, um beispielsweise ein Statorspulenmodul aus zwei in Reihe oder parallel geschalteten, insbesondere gegenläufig gewickelten und damit gegenläufig bestromten, Statorspulengruppen zu erzeugen. The preferred configurations according to claims 2 to 6 relate to preferred structural combinations of the stator coils in order to produce, for example, a stator coil module from two stator coil groups connected in series or in parallel, in particular wound in opposite directions and thus energized in opposite directions.
Bei der besonders bevorzugten Ausgestaltung gemäß Anspruch 7 weist die Statorspulenanordnung mehrere solcher Statorspulenmodule auf, die entlang des Umfangs des Stators verteilt in den Statornuten angeordnet sind. Damit ist eine sich über den Umfang des Stators wiederholende Anordnung von Statorspulen erzeugbar. In the particularly preferred embodiment according to claim 7, the stator coil assembly has a plurality of such stator coil modules along of the circumference of the stator are distributed in the stator slots. An arrangement of stator coils that repeats itself over the circumference of the stator can thus be produced.
Die weiter bevorzugten Ausgestaltungen gemäß den Ansprüchen 8 und 9 betreffen vorteilhafte Varianten für die Verschaltungsanordnung an der Statorvorderseite. Eine besonders hohe Flexibilität ergibt sich gemäß Anspruch 9 dadurch, dass sich zumindest ein Teil der Verschaltungsanordnung auf den Stator aufsetzen lässt, wodurch der mindestens eine Anschlusspin elektrisch verschaltbar und/oder an die Phasen der Dreh-Versorgungsspannung anschließbar ist. Es lässt sich leicht vorstellen, dass die Verwendung unterschiedlicher Verschaltungsanordnungen zu einer flexiblen Modifizierbarkeit der Verschaltung der Statorspulen führt. The further preferred configurations according to claims 8 and 9 relate to advantageous variants for the wiring arrangement on the front side of the stator. According to claim 9, a particularly high degree of flexibility results from the fact that at least part of the interconnection arrangement can be placed on the stator, as a result of which the at least one connection pin can be electrically interconnected and/or connected to the phases of the rotary supply voltage. It is easy to imagine that the use of different wiring arrangements leads to flexible modifiability of the wiring of the stator coils.
Bei der besonders bevorzugten Ausgestaltung gemäß Anspruch 10 ist die weitestgehende Nutzung von Gleichteilen für die Hairpins und die Anschlusspins vorgesehen, wodurch sich die Fertigungskosten beträchtlich reduzieren lassen. In the case of the particularly preferred embodiment according to claim 10, the greatest possible use of identical parts for the hairpins and the connection pins is provided, as a result of which the production costs can be reduced considerably.
Nach einer weiteren Lehre gemäß Anspruch 11, der eigenständige Bedeutung zukommt, wird eine rotierende Drehfeldmaschine mit einem vorschlagsgemäßen Stator und einem Rotor beansprucht. Der Rotor kann dabei für die Wechselwirkung mit der Statorspulenanordnung beispielsweise eine entsprechende Permanentmagnetanordnung aufweisen. Auf alle Ausführungen zu dem vorschlagsgemäßen Stator darf verwiesen werden. According to a further teaching according to claim 11, which is of independent importance, a rotating induction machine with a proposed stator and a rotor is claimed. In this case, the rotor can have, for example, a corresponding permanent magnet arrangement for the interaction with the stator coil arrangement. Reference may be made to all statements relating to the proposed stator.
Im Folgenden wird die Erfindung anhand einer lediglich Ausführungsbeispiele darstellenden Zeichnung näher erläutert. In der Zeichnung zeigt The invention is explained in more detail below with reference to a drawing that merely shows exemplary embodiments. In the drawing shows
Fig. 1 einen vorschlagsgemäßen Stator a) mit Blickrichtung auf die Statorvorderseite und b) mit Blickrichtung auf die Statorhinterseite, 1 shows a proposed stator a) looking at the front side of the stator and b) looking at the rear side of the stator,
Fig. 2 eine Statorspule der Statorspulenanordnung des Stators gemäß Fig. 1 in einer perspektivischen Ansicht, FIG. 2 shows a stator coil of the stator coil arrangement of the stator according to FIG. 1 in a perspective view,
Fig.3 ein Statorspulenmodul der Statorspulenanordnung des Stators gemäß Fig. 1 , bei dem a) der Hairpin erster Art herausgestellt ist b) der An- schlusspin herausgestellt ist, c) der Hairpin zweiter Art herausgestellt ist und d) ein Teil der Verschaltungsanordnung herausgestellt ist, 3 shows a stator coil module of the stator coil arrangement of the stator according to FIG. 1, in which a) the hairpin of the first type is exposed b) the circuit pin is exposed, c) the hairpin of the second type is exposed and d) a part of the circuit arrangement is exposed,
Fig. 4 das Spulenmodul gemäß Fig. 3 a) ohne Statorgrundkörper und b) mit Statorgrundkörper, 4 shows the coil module according to FIG. 3 a) without the stator base body and b) with the stator base body,
Fig. 5 die Verschaltungsanordnung des Stators gemäß Fig. 1 im demontierten Zustand a) von vorne und b) von hinten, 5 shows the wiring arrangement of the stator according to FIG. 1 in the dismantled state a) from the front and b) from the rear,
Fig. 6 a) ein Blick auf die Statorvorderseite bei einer ersten Verschaltung der Statorspulen und b) das zugeordnete Schaltbild, 6 a) a view of the front of the stator with a first connection of the stator coils and b) the associated circuit diagram,
Fig. 7 a) ein Blick auf die Statorvorderseite bei einer zweiten Verschaltung der Statorspulen und b) das zugeordnete Schaltbild, 7 a) a view of the front of the stator with a second connection of the stator coils and b) the associated circuit diagram,
Der in Fig. 1 dargestellte Stator 1 lässt sich für einen weiten Bereich von rotierenden Drehfeldmaschinen, insbesondere elektrischen Motoren und Generatoren, einsetzen. Darunter fallen beispielsweise Synchronmaschinen, die selbstöder fremderregt sein können, Asynchronmaschinen oder dergleichen. The stator 1 shown in FIG. 1 can be used for a wide range of rotating induction machines, in particular electric motors and generators. This includes, for example, synchronous machines that can be self-excited or externally excited, asynchronous machines or the like.
Der Stator 1 zeigt vorzugsweise einen hohlen Statorinnenraum 2 zur Aufnahme eines nicht dargestellten Rotors auf. Alternativ kann der Rotor aber auch außerhalb des Stators 1 angeordnet sein, wenn es sich bei der Drehfeldmaschine um einen Außenläufer handelt. Dann kann auf den Statorinnenraum 2 sogar verzichtet werden. Ferner zeigt der Stator 1 einen metallischen Statorgrundkörper 3, wobei dem Stator 1 eine geometrische Maschinenachse 4 und darum verteilt in dem Statorgrundkörper 3 angeordnete Statornuten 5 zugeordnet sind. Jede Statornut 5 erstreckt sich, jeweils bezogen auf die Maschinenachse 4, axial von einer Statorvorderseite 6 zu einer Statorhinterseite 7 und radial von einer Statorinnenseite 8 zu einer Statoraußenseite 9. Der Stator 1 weist eine Statorspulenanordnung 10 auf, die zumindest zum Teil in den Statornuten 5 verläuft. The stator 1 preferably has a hollow stator interior 2 for accommodating a rotor (not shown). Alternatively, the rotor can also be arranged outside of the stator 1 if the induction machine is an external rotor. Then the stator interior 2 can even be dispensed with. Furthermore, the stator 1 shows a metallic stator base body 3 , with the stator 1 being assigned a geometric machine axis 4 and stator slots 5 distributed around it in the stator base body 3 . Each stator slot 5 extends, in relation to the machine axis 4, axially from a stator front 6 to a stator rear 7 and radially from a stator inside 8 to a stator outside 9. The stator 1 has a stator coil arrangement 10, which is at least partially in the stator slots 5 runs.
Die Statorspulenanordnung 10 dient der Erzeugung eines Dreh-Magnetfelds, das mit einem obigen Rotor wechselwirkt. Hierfür bildet die Statorspulenanordnung 10 im bestromten Zustand elektromagnetische Pole aus, deren Ausbil- dung von der Struktur der Statorspulenanordnung 10 abhängt. Die vorschlagsgemäße Lösung lässt sich mit unterschiedlichen Strukturen für die Statorspulenanordnung 10 abbilden. The stator coil assembly 10 serves to generate a rotary magnetic field that interacts with a rotor above. For this purpose, the stator coil arrangement 10 forms electromagnetic poles in the energized state, the formation of which tion depends on the structure of the stator coil assembly 10. The proposed solution can be mapped with different structures for the stator coil arrangement 10 .
Die Statorspulenanordnung 10 bildet mehrere, hier und vorzugsweise drei, Statorspulenstränge 11 , 12, 13 aus, jeweils aus mehreren Statorspulen 14-17, die jeweils eine Spulenbreite 18 von mindestens zwei Statornuten 5, hier sechs Statornuten 5, aufweisen. Der Begriff "Statorspulenstrang" ist vorliegend weit auszulegen. Er umfasst eine beliebige Verschaltung einer Anzahl von Statorspulen 14-17. Die Statorspulenstränge 11 , 12, 13 sind zur Erzeugung des Dreh-Magnetfelds an eine Dreh-Versorgungsspannung u, v, w anschließbar. Bei der Dreh-Versorgungsspannung u, v, w kann es sich um eine Versorgungsspannung mit beliebiger Phasenzahl, vorzugsweise jedoch mit drei Phasen, handeln. The stator coil arrangement 10 forms several, here and preferably three, stator coil strands 11, 12, 13, each consisting of several stator coils 14-17, each of which has a coil width 18 of at least two stator slots 5, here six stator slots 5. The term “stator coil assembly” is to be interpreted broadly in the present case. It includes any interconnection of a number of stator coils 14-17. The stator coil strands 11, 12, 13 can be connected to a rotary supply voltage u, v, w to generate the rotary magnetic field. The rotating supply voltage u, v, w can be a supply voltage with any number of phases, but preferably with three phases.
Eine Statorspule 14-17 ist in Fig. 2 als solche dargestellt. Der Spulenquerschnitt der Statorspule 14-17 lässt sich im Rahmen der vorschlagsgemäßen Lösung in einem weiten Bereich einstellen. A stator coil 14-17 is shown as such in FIG. The coil cross section of the stator coil 14-17 can be set within a wide range within the scope of the proposed solution.
Fig. 2 und Fig. 3a zeigen, dass die Statorspulen 14-17 jeweils mehrere Spulenwindungen 19 aufweisen, wobei jede Statorspule 14-17 aus mehreren in Reihe geschalteten, formstabilen, zweischenkligen Hairpins erster Art 20 gebildet wird. Die Hairpins erster Art 20 weisen jeweils zumindest zum Teil nach Art einer U-Form zwei von einem Verbindungsschenkel 21 abragende Hairpin- schenkel 22, 23 auf. Die Hairpinschenkel 22, 23 der Hairpins erster Art 20 verlaufen ausgehend von dem Verbindungsschenkel 21 von der Statorvorderseite 6 zu der Statorhinterseite 7 in den Statornuten 5. Sie sind auf der Statorhinterseite 7 mechanisch und elektrisch verbunden, insbesondere verschweißt. Das ist am besten der Darstellung gemäß Fig. 4 zu entnehmen. 2 and FIG. 3a show that the stator coils 14-17 each have a plurality of coil windings 19, with each stator coil 14-17 being formed from a plurality of series-connected, dimensionally stable, two-legged hairpins of the first type 20. The hairpins of the first type 20 each have two hairpin legs 22, 23 protruding from a connecting leg 21, at least in part in the manner of a U-shape. The hairpin legs 22, 23 of the hairpins of the first type 20 run, starting from the connecting leg 21, from the front side 6 of the stator to the rear side 7 of the stator in the stator slots 5. They are mechanically and electrically connected on the rear side 7 of the stator, in particular welded. This can best be seen from the representation according to FIG.
Wesentlich ist nun, dass zumindest einem Teil der Statorspulen 14-17 der Spulenanordnung, vorzugsweise mehreren Statorspulen 14-17, weiter vorzugsweise mehr als der Hälfte der Statorspulen 14-17, weiter vorzugsweise allen Statorspulen 14-17, zusätzlich mindestens ein formstabiler, einschenkliger Anschlusspin 24-29 zugeordnet ist, der von der Statorvorderseite 6 zu der Statorhinterseite 7 verläuft und der auf der Statorhinterseite 7 mit dem Spulen- anfang oder dem Spulenende der jeweiligen Statorspule 14-17 mechanisch und elektrisch verbunden ist. Fig. 2 zeigt beispielhaft, dass der betreffende Spulenanfang bzw. das betreffende Spulenende über den betreffenden Anschlusspin 24-29 gewissermaßen an die Statorvorderseite 6 geführt ist, sodass eine Verschaltung des betreffenden Spulenanfangs bzw. des betreffenden Spulenendes von der Statorvorderseite 6 aus möglich ist. It is now essential that at least part of the stator coils 14-17 of the coil arrangement, preferably several stator coils 14-17, more preferably more than half of the stator coils 14-17, more preferably all stator coils 14-17, additionally have at least one dimensionally stable, single-leg connection pin 24-29 is assigned, which runs from the stator front 6 to the stator rear 7 and on the stator rear 7 with the coil beginning or the coil end of the respective stator coil 14-17 is mechanically and electrically connected. 2 shows by way of example that the beginning of the coil or the end of the coil in question is routed to the front of the stator 6 via the connection pin 24-29 in question, so that the beginning of the coil or the end of the coil in question can be connected from the front of the stator 6.
Vorzugsweise ist der Anschlusspin 24-29 so gestaltet, dass er auf der Statorvorderseite 6, vorzugsweise in bezogen auf die Maschinenachse 4 axialer Richtung mit einem Überstand über die Statorspulenanordnung 10 im Übrigen übersteht, sodass eine einfache Verschaltung mittels der Verschaltungsanordnung 30 möglich ist. The connection pin 24-29 is preferably designed in such a way that it projects beyond the stator coil arrangement 10 on the front side of the stator 6, preferably in the axial direction in relation to the machine axis 4, so that simple interconnection by means of the interconnection arrangement 30 is possible.
Wie oben angesprochen, sind die Anschlusspins 24-29 einschenklig ausgestaltet. Vorzugsweise entspricht die Form des Anschlusspins 24-29 ohne den Überstand im Wesentlichen der Form eines halben Hairpins erster Art 20 bei Aufteilung des Hairpins erster Art 20 entlang einer axialen Symmetrielinie in zwei gleiche Hälften. Bei geeigneter Auslegung lassen sich die Hairpins erster Art 20 und die Anschlusspins 24-29 mit derselben Fertigungstechnologie, insbesondere Biegetechnologie, herstellen. Bestenfalls lassen sich die Hairpins erster Art 20 und die Anschlusspins 24-29 auf derselben Fertigungsanlage fertigen. As mentioned above, the connection pins 24-29 are single-legged. The shape of the connection pin 24-29 without the overhang preferably corresponds essentially to the shape of half a hairpin of the first type 20 when the hairpin of the first type 20 is divided into two equal halves along an axial line of symmetry. With a suitable design, the hairpins of the first type 20 and the connection pins 24-29 can be produced using the same production technology, in particular bending technology. At best, the hairpins of the first type 20 and the connection pins 24-29 can be manufactured on the same production line.
Entsprechend weist der Stator 1 an der Statorvorderseite 6 eine Verschaltungsanordnung 30 auf, über die die Anschlusspins 24-29 zur Definition der Statorspulenstränge 11-13 miteinander und/oder zur Erzeugung des Dreh- Magnetfelds mit der Dreh-Versorgungsspannung u, v, w verschaltet sind. Die Verschaltungsanordnung 30 kann sich aus einer Mehrzahl einzelner, brückenartiger elektrischer Leiter zusammensetzen. Eine besonders einfache Verschaltung ergibt sich dadurch, dass die Verschaltungsanordnung 30 zusammenhängend und damit einzeln handhabbar ausgestaltet ist. Correspondingly, the stator 1 has a wiring arrangement 30 on the front side 6 of the stator, via which the connection pins 24-29 are connected to one another to define the stator coil strands 11-13 and/or to the rotary supply voltage u, v, w to generate the rotary magnetic field . The interconnection arrangement 30 can be composed of a plurality of individual, bridge-like electrical conductors. A particularly simple interconnection results from the fact that the interconnection arrangement 30 is designed to be continuous and can therefore be handled individually.
Vorzugsweise weist der Stator 1 mehrere Statorspulengruppen 31 , 32 auf, wobei eine Statorspulengruppe 31 , 32 dadurch definiert ist, dass die Statorspulengruppe 31 , 32 eine erste Statorspule 14 und dazu in Reihe oder parallel geschaltet eine zweite Statorspule 15 aufweist. Eine solche Statorspulengruppe 31 , 32 kann mehr als zwei Statorspulen 14, 15 aufweisen. Hier und vorzugsweise handelt es sich bei der Statorspulengruppe 31 , 32 allerdings um ein Statorspulenpaar 31, 32 aus der ersten Statorspule 14 und der zweiten Statorspule 15. Vorzugsweise kann der Begriff "Gruppe" daher im Folgenden durchgehend durch den Begriff "Paar " ersetzt werden. The stator 1 preferably has a plurality of stator coil groups 31 , 32 , a stator coil group 31 , 32 being defined in that the stator coil group 31 , 32 has a first stator coil 14 and a second stator coil 15 connected in series or parallel thereto. Such a stator coil group 31, 32 can have more than two stator coils 14, 15. Here, and preferably, the stator coil group 31, 32 is a pair of stator coils 31, 32 made up of the first stator coil 14 and the second stator coil 15. The term “group” can therefore preferably be replaced by the term “pair” throughout the following.
Hier und vorzugsweise sind die erste Statorspule 14 und die zweite Statorspule 15 um genau eine Statornut 5 zueinander versetzt angeordnet. Dieser Versatz kann auch mehrere Statornuten 5 umfassen. Here, and preferably, the first stator coil 14 and the second stator coil 15 are arranged offset from one another by exactly one stator slot 5 . This offset can also include several stator slots 5 .
Die erste Statorspule 14 und die zweite Statorspule 15 sind vorzugsweise gleichläufig gewickelt, wobei dem Spulenende der ersten Statorspule 14 und dem Spulenanfang der zweiten Spule 15 ein Anschlusspin 25, 26 zugeordnet ist, und wobei diese beiden Anschlusspins 25, 26 zur Erzeugung der Reihenschaltung bzw. Parallelschaltung auf der Statorvorderseite 6 mittels der Verschaltungsanordnung 30, insbesondere mittels einer Radialbrücke 33, verbunden sind. Der Begriff "Radialbrücke" beschreibt eine Brücke aus einem elektrischen Leiter, der eine Strecke im bezogen auf die Maschinenachse 4 in radialer Richtung überbrückt. The first stator coil 14 and the second stator coil 15 are preferably wound in the same direction, with the coil end of the first stator coil 14 and the coil start of the second coil 15 being assigned a connection pin 25, 26, and these two connection pins 25, 26 being used to produce the series connection or Parallel connection on the stator front 6 by means of the interconnection arrangement 30, in particular by means of a radial bridge 33, are connected. The term "radial bridge" describes a bridge made of an electrical conductor that bridges a distance in relation to the machine axis 4 in the radial direction.
Fig. 6 zeigt, dass der Stator 1 mehrere Statorspulenmodule 35-58 aus mindestens einer Statorspule 14-17, vorzugsweise aus mehreren Statorspulen 14-17, aufweist. Anhand des Statorspulenmoduls 35 ist in Fig. 3a gezeigt, dass das Statorspulenmodul 35 hier und vorzugsweise von mindestens zwei in Reihe oder parallel geschalteten, insbesondere gegenläufig gewickelten und damit gegenläufig bestromten, Statorspulengruppen 31 , 32, vorzugsweise einer Pri- mär-Statorspulengruppe 31 und einer Sekundär-Statorspulengruppe 32, gebildet ist. Fig. 4 zeigt, dass hier und vorzugsweise die Statorspulengruppen 31, 32 um mehrere Statornuten 5 und/oder um eine Spulenbreite 18 zueinander versetzt angeordnet sind. 6 shows that the stator 1 has a plurality of stator coil modules 35-58 made up of at least one stator coil 14-17, preferably a plurality of stator coils 14-17. Based on the stator coil module 35 is shown in Fig. 3a that the stator coil module 35 here and preferably by at least two series or parallel, in particular wound in opposite directions and thus energized in opposite directions, stator coil groups 31, 32, preferably a primary stator coil group 31 and a Secondary stator coil group 32 is formed. 4 shows that here and preferably the stator coil groups 31, 32 are arranged offset from one another by a plurality of stator slots 5 and/or by a coil width 18.
Es lässt sich der Darstellung gemäß Fig. 3c entnehmen, dass hier und vorzugsweise ein formstabiler, zweischenkliger Hairpin zweiter Art 59 vorgesehen ist, der zumindest zum Teil nach Art einer U-Form zwei von einem Verbindungsschenkel 60 abragende Hairpinschenkel 61 , 62 aufweist. Die Hairpin- schenkel 61 , 62 des Hairpins zweiter Art 59 verlaufen ausgehend von dem Verbindungsschenkel 60 von der Statorvorderseite 6 zu der Statorhinterseite 7 in den Statornuten 5, wobei der Hairpin zweiter Art 59 auf der Statorhinterseite 7 die Reihenschaltung bzw. Parallelschaltung zwischen den Statorspulengruppen 31, 32, insbesondere durch Verbindung des Spulenendes der zweiten Spule 15 der Primär-Statorspulengruppe 31 mit dem Spulenanfang der ersten Spule 16 der Sekundär-Statorspulengruppe 32, herstellt. In diesem Zusammenhang darf darauf hingewiesen werden, dass der Hairpin zweiter Art 59 nicht nur im Bereich der Statoraußenseite 9 (Fig. 3c), sondern auch im Bereich der Statorinnenseite 8 oder an einer beliebigen Stelle zwischen der Statoraußenseite 9 und der Statorinnenseite 8 angeordnet sein kann. It can be seen from the representation according to FIG. 3c that here and preferably a dimensionally stable, two-legged hairpin of the second type 59 is provided, which has two hairpin legs 61 , 62 protruding from a connecting leg 60 at least partially in the manner of a U-shape. The hairpin legs 61, 62 of the hairpins of the second type 59 run starting from the Connecting leg 60 from the front of the stator 6 to the rear of the stator 7 in the stator slots 5, the hairpin of the second type 59 on the rear of the stator 7 connecting the series connection or parallel connection between the stator coil groups 31, 32, in particular by connecting the coil end of the second coil 15 of the primary stator coil group 31 with the beginning of the coil of the first coil 16 of the secondary stator coil group 32 produces. In this context, it should be pointed out that the hairpin of the second type 59 can be arranged not only in the area of the outside of the stator 9 (Fig. 3c), but also in the area of the inside of the stator 8 or at any point between the outside of the stator 9 and the inside of the stator 8 .
Die Hairpins erster Art 20 und/oder die Hairpins zweiter Art 59 und/oder die Anschlusspins 24-29 sind jeweils aus einem formstabilen, länglichen, metallischen elektrischen Leitermaterial, vorzugsweise aus Kupfer, ausgestaltet. Sie können jeweils einen weitgehend beliebigen Querschnitt aufweisen. Dabei sind quadratische oder rechteckige Querschnitte besonders vorteilhaft, da mit solchen Querschnitten eine besonders hohe Leitungsdichte in den Statornuten 5 erreichbar ist. Die Hairpins erster Art 20 und/oder die Hairpins zweiter Art 59 und/oder die Anschlusspins 24-29 sind vorzugsweise in die betreffende Form gebogen. Die Hairpins erster Art 20 und/oder die Hairpins zweiter Art 59 und/oder die Anschlusspins 24-29 sind weiter vorzugsweise aus dem identischen elektrischen Leitermaterial ausgestaltet, was die Fertigung dieser Komponenten vereinfacht. The hairpins of the first type 20 and/or the hairpins of the second type 59 and/or the connection pins 24-29 are each made of a dimensionally stable, elongated, metallic electrical conductor material, preferably made of copper. You can each have a largely arbitrary cross-section. In this case, square or rectangular cross sections are particularly advantageous since a particularly high line density in the stator slots 5 can be achieved with such cross sections. The hairpins of the first type 20 and/or the hairpins of the second type 59 and/or the connection pins 24-29 are preferably bent into the relevant shape. The hairpins of the first type 20 and/or the hairpins of the second type 59 and/or the connection pins 24-29 are also preferably made from the identical electrical conductor material, which simplifies the manufacture of these components.
Um die obige Reihenschaltung bzw. eine Parallelschaltung zwischen den Statorspulengruppen zu realisieren, ist eine Alternative zu der Verwendung des Hairpins zweiter Art 59 denkbar. Hier ist dem Spulenende der zweiten Spule 15 der Primär-Statorspulengruppe 31 und dem Spulenanfang der ersten Spule 16 der Sekundär-Statorspulengruppe 32 jeweils ein Anschlusspin 24-29 zugeordnet, wobei diese Anschlusspins 24-29 zur Erzeugung der Reihenschaltung bzw. Parallelschaltung zwischen den Statorspulengruppen 31, 32 mittels der Verschaltungsanordnung 30, insbesondere mittels einer Tangentialbrücke, verbunden sind. Der Begriff "Tangentialbrücke" beschreibt eine Brücke aus einem elektrischen Leiter, der eine Strecke im bezogen auf die Maschinenachse 4 in tangentialer Richtung überbrückt. Die Statorspulenmodule 35-58 stellen jeweils mindestens zwei Modulanschlüsse 63, 64 für den Anschluss an die Dreh-Versorgungsspannung u, v, w bereit, wie für das Statorspulenmodul 35 in Fig. 3a gezeigt ist. Hierfür ist vorzugsweise für jedes Statorspulenmodul 35-58 ein Anschlusspin 24 dem Spulenanfang der ersten Spule 14 der Primär-Spulengruppe 31 zugeordnet, während ein weiterer Anschlusspin 29 dem Spulenende der zweiten Spule 17 der Sekundär- Spulengruppe 32 zugeordnet ist. Diese Anschlusspins 24, 29 stellen die Modulanschlüsse 63, 64 des jeweiligen Statorspulenmoduls 35-58 für den Anschluss an die Dreh-Versorgungsspannung u, v, w bereit. In order to implement the above series connection or a parallel connection between the stator coil groups, an alternative to the use of the hairpin of the second type 59 is conceivable. Here the coil end of the second coil 15 of the primary stator coil group 31 and the coil start of the first coil 16 of the secondary stator coil group 32 are each assigned a connection pin 24-29, with these connection pins 24-29 being used to generate the series connection or parallel connection between the stator coil groups 31 , 32 are connected by means of the interconnection arrangement 30, in particular by means of a tangential bridge. The term "tangential bridge" describes a bridge made of an electrical conductor that bridges a distance in relation to the machine axis 4 in the tangential direction. The stator coil modules 35-58 each provide at least two module terminals 63, 64 for connection to the rotary supply voltage u, v, w, as shown for the stator coil module 35 in Figure 3a. For this purpose, a connection pin 24 is assigned to the coil start of the first coil 14 of the primary coil group 31 for each stator coil module 35-58, while a further connection pin 29 is assigned to the coil end of the second coil 17 of the secondary coil group 32. These connection pins 24, 29 provide the module connections 63, 64 of the respective stator coil module 35-58 for connection to the rotating supply voltage u, v, w.
Wie oben angesprochen, weist die Statorspulenanordnung 10 vorzugsweise mehrere Statorspulenmodule 35-58 auf, die entlang des Umfangs des Stators 1 verteilt in den Statornuten 5 angeordnet sind, wobei die Statorspulenmodule 35-58 über die Verschaltung der Anschlusspins 24-29 mittels der Verschaltungsanordnung 30 die Statorspulenstränge 11, 12, 13 ausbilden. As mentioned above, the stator coil arrangement 10 preferably has a plurality of stator coil modules 35-58 which are distributed along the circumference of the stator 1 in the stator slots 5, the stator coil modules 35-58 being interconnected by the connection pins 24-29 by means of the interconnection arrangement 30 Stator coil strands 11, 12, 13 form.
Alternativ oder zusätzlich zu der Definition der Spulenstränge 11, 12, 13 dient die Verschaltungsanordnung 30 vorzugsweise dem Anschluss der Statorspulenanordnung 10 an die Dreh-Versorgungsspannung u, v, w. Mittels der Verschaltungsanordnung 30 lassen sich die Spulenstränge 11 , 12, 13 aus den Statorspulenmodulen 35-58 über die Modulanschlüsse 63, 64 in einer vorbestimmten Verschaltung an die Phasen der Dreh-Versorgungsspannung u, v, w anschließen. Bei der vorbestimmten Verschaltung kann es sich beispielsweise um eine Dreiecksverschaltung gemäß Fig. 6 oder eine Sternverschaltung gemäß Fig. 7, die zusätzlich eine Mehrzahl von Sternbrücken 72 erfordert, handeln. Die Sternbrücken 72 in Fig. 7 sind Bestandteil der Verschaltungsanordnung 30. Alternatively or in addition to the definition of the coil strands 11, 12, 13, the interconnection arrangement 30 preferably serves to connect the stator coil arrangement 10 to the rotary supply voltage u, v, w. The interconnection arrangement 30 can be used to disconnect the coil strands 11, 12, 13 from the stator coil modules 35-58 via the module connections 63, 64 in a predetermined connection to the phases of the rotating supply voltage u, v, w. The predetermined connection can be, for example, a delta connection according to FIG. 6 or a star connection according to FIG. 7, which additionally requires a plurality of star bridges 72 . The star bridges 72 in Fig. 7 are part of the interconnection arrangement 30.
Wie in Fig. 5 gezeigt, ist die Verschaltungsanordnung 30 hier und vorzugsweise zum Teil zusammenhängend ausgestaltet. In besonders bevorzugter Ausgestaltung weist die Verschaltungsanordnung 30 mindestens einen zusammenhängenden, auf die Statorvorderseite 6 aufgesetzten Verschaltungsring 65 auf, über den die Anschlusspins 24-29 zur Definition der Statorspulenstränge 11-13 miteinander und/oder zur Erzeugung des Dreh-Magnetfelds mit der Dreh- Versorgungsspannung u, v, w verschaltet sind. Vorzugsweise ist es so, dass der Verschaltungsring 65 für zumindest einen Teil der Statorspulenmodule 35- 58 eine Radialbrücke 33 und/oder eine Tangentialbrücke 72 bereitstellt. Bei dem dargestellten und insoweit bevorzugten Ausführungsbeispiel dient der Verschaltungsring 65 allerdings der Verschaltung der Anschlusspins 24-29 zur Erzeugung des Dreh-Magnetfelds mit der Dreh-Versorgungsspannung u, v, w. Hierfür weist der Verschaltungsring 65 mindestens drei Teilringe 66, 67, 68 auf, die jeweils mit einer Phase der Dreh-Versorgungsspannung u, v, w elektrisch verbunden sind und die jeweils einen Anschlussfortsatz 69, 70, 71 für den elektrischen Kontakt mit dem betreffenden Anschlusspin 24-29 aufweisen. As shown in FIG. 5, the interconnection arrangement 30 is designed here and preferably in a partially continuous manner. In a particularly preferred embodiment, the interconnection arrangement 30 has at least one connected interconnection ring 65 placed on the front side of the stator 6, via which the connection pins 24-29 are used to define the stator coil strands 11-13 with one another and/or to generate the rotating magnetic field with the rotating supply voltage u, v, w are interconnected. It is preferably the case that the interconnection ring 65 provides a radial bridge 33 and/or a tangential bridge 72 for at least some of the stator coil modules 35-58. However, in the illustrated and preferred exemplary embodiment, the interconnection ring 65 is used to connect the connection pins 24-29 to generate the rotary magnetic field with the rotary supply voltage u, v, w. For this purpose, the interconnection ring 65 has at least three partial rings 66, 67, 68 , which are each electrically connected to one phase of the rotary supply voltage u, v, w and each have a connection extension 69, 70, 71 for electrical contact with the relevant connection pin 24-29.
Grundsätzlich kann es vorgesehen sein, dass die Verschaltungsanordnung 30 mindestens einen zusammenhängenden, auf die Statorvorderseite 6 aufgesetzten Verschaltungsring erster Art aufweist, über den die Anschlusspins 24-29 zur Definition der Statorspulenstränge 11-13 miteinander verschaltet sind und dass die Verschaltungsanordnung 30 mindestens einen zusammenhängenden, auf die Statorvorderseite 6 und/oder auf den Verschaltungsring erster Art aufgesetzten Verschaltungsring zweiter Art aufweist, über den die Anschlusspins 24- 29 zur Erzeugung des Dreh-Magnetfelds mit der Dreh-Versorgungsspannung u, v, w verschaltet sind. In principle, provision can be made for the interconnection arrangement 30 to have at least one cohesive first-type interconnection ring placed on the front side of the stator 6, via which the connection pins 24-29 are interconnected to define the stator coil strands 11-13, and for the interconnection arrangement 30 to have at least one cohesive, on the front side of the stator 6 and/or on the first type of interconnection ring has an interconnection ring of the second type, via which the connection pins 24-29 for generating the rotary magnetic field are connected to the rotary supply voltage u, v, w.
Eine besonders kostengünstige Umsetzung der vorschlagsgemäßen Lösung lässt sich dadurch erreichen, dass die Hairpins erster Art 20 aller Statorspulen 14-17 identisch zueinander ausgestaltet sind. Alternativ oder zusätzlich kann es entsprechend vorgesehen sein, dass die Hairpins zweiter Art 59 aller Statorspulenmodule 35-58 identisch zueinander ausgestaltet sind. Weiter alternativ oder zusätzlich kann es vorgesehen sein, dass die Anschlusspins aller Statorspulen 14-17 identisch zueinander ausgestaltet sind. Schließlich ist es vorzugsweise so, dass die Hairpins erster Art 20 und die Hairpins zweiter Art 59 unterschiedlich geformt sind, um den unterschiedlichen geometrischen Anforderungen Rechnung tragen zu können. A particularly cost-effective implementation of the proposed solution can be achieved in that the hairpins of the first type 20 of all the stator coils 14-17 are configured identically to one another. As an alternative or in addition, provision can be made accordingly for the hairpins of the second type 59 of all the stator coil modules 35-58 to be configured identically to one another. Further alternatively or additionally, it can be provided that the connection pins of all stator coils 14-17 are configured identically to one another. Finally, it is preferably the case that the hairpins of the first type 20 and the hairpins of the second type 59 are shaped differently in order to be able to take account of the different geometric requirements.
Nach einer weiteren Lehre wird eine nicht dargestellte, rotierende Drehfeldmaschine mit einem vorschlagsgemäßen Stator 1 und einem Rotor, der magnetisch mit der Statorspulenanordnung 10 wechselwirkt, als solche beansprucht. According to a further teaching, a rotating induction machine (not shown) with a proposed stator 1 and a rotor which interacts magnetically with the stator coil arrangement 10 is claimed as such.
Bei der Drehfeldmaschine kann es sich wie oben angesprochen um einen elektrischen Motor oder Generator handeln. Dabei können beliebige Maschi- nenarten zur Anwendung kommen. Beispiele hierfür sind Synchronmaschinen, die selbst- oder fremderregt sein können, Asynchronmaschinen oder dergleichen. As mentioned above, the induction machine can be an electric motor or generator. Any machine can types are used. Examples of this are synchronous machines, which can be self-excited or externally excited, asynchronous machines or the like.

Claims

Patentansprüche patent claims
1. Stator für eine rotierende Drehfeldmaschine mit einem Statorgrundkörper (3), wobei dem Stator (1) eine geometrische Maschinenachse (4) und darum verteilt in dem Statorgrundkörper (3) angeordnete Statornuten (5) zugeordnet sind, wobei sich jede Statornut (5), jeweils bezogen auf die Maschinenachse (4), axial von einer Statorvorderseite (6) zu einer Statorhinterseite (7) und radial von einer Statorinnenseite (8) zu einer Statoraußenseite (9) erstreckt, wobei der Stator (1) eine Statorspulenanordnung (10) aufweist, die zumindest zum Teil in den Statornuten (5) verläuft, wobei die Statorspulenanordnung (10) mehrere Statorspulenstränge (11-13), jeweils aus mehreren Statorspulen (14-17) ausbildet, die jeweils eine Spulenbreite (8) von mindestens zwei Statornuten (8) aufweisen, wobei die Statorspulenstränge (11-13) zur Erzeugung eines Dreh-Magnetfelds an eine Dreh- Versorgungsspannung (u, v, w) anschließbar sind, wobei die Statorspulen (14-17) jeweils mehrere Spulenwindungen (19) aufweisen, wobei jede Statorspule (14-17) aus mehreren in Reihe geschalteten, formstabilen, zweischenkligen Hairpins erster Art (20) gebildet wird, die jeweils zumindest zum Teil nach Art einer U-Form zwei von einem Verbindungsschenkel (21) abragende Hairpinschenkel (22, 23) aufweisen, wobei die Hairpin- schenkel (22, 23) der Hairpins erster Art (20) ausgehend von dem Verbindungsschenkel (21) von der Statorvorderseite (6) zu der Statorhinterseite (7) in den Statornuten (5) verlaufen und auf der Statorhinterseite (7) mechanisch und elektrisch verbunden sind, dadurch gekennzeichnet, dass zumindest einem Teil der Statorspulen (14-17) zusätzlich mindestens ein formstabiler, einschenkliger Anschlusspin (24-29) zugeordnet ist, der von der Statorvorderseite (6) zu der Statorhinterseite (7) verläuft und der auf der Statorhinterseite (7) mit dem Spulenanfang oder dem Spulenende der jeweiligen Statorspule (14-17) mechanisch und elektrisch verbunden ist und dass der Stator (1) an der Statorvorderseite (6) eine Verschaltungsanordnung (30) aufweist, über die die Anschlusspins (24-29) zur Definition der Statorspulenstränge (11-13) miteinander und/oder zur Erzeugung des Dreh-Magnetfelds mit der Dreh-Versorgungsspannung verschaltet sind. 1. Stator for a rotating induction machine with a stator base body (3), wherein the stator (1) is assigned a geometric machine axis (4) and stator slots (5) distributed around it in the stator base body (3), each stator slot (5) , in each case relative to the machine axis (4), extending axially from a front side (6) of the stator to a rear side (7) of the stator and radially from a stator inner side (8) to a stator outer side (9), the stator (1) having a stator coil arrangement (10) which runs at least partially in the stator slots (5), the stator coil arrangement (10) forming a plurality of stator coil strands (11-13), each consisting of a plurality of stator coils (14-17), each having a coil width (8) of at least two stator slots (8), wherein the stator coil strands (11-13) can be connected to a rotary supply voltage (u, v, w) to generate a rotary magnetic field, the stator coils (14-17) each having a plurality of coil turns (19), each stator coil (14-17) being formed from a plurality of series-connected, dimensionally stable, two-legged hairpins of the first type (20), each of which has two hairpin legs (22, 23 ), wherein the hairpin legs (22, 23) of the hairpins of the first type (20) run from the connecting leg (21) from the front of the stator (6) to the rear of the stator (7) in the stator slots (5) and on the rear of the stator (7) are mechanically and electrically connected, characterized in that at least one part of the stator coils (14-17) is additionally assigned at least one dimensionally stable, single-leg connection pin (24-29) which extends from the front side (6) of the stator to the rear side (7th ) runs and which is mechanically and electrically connected on the rear side (7) of the stator to the coil start or the coil end of the respective stator coil (14-17) and that the stator (1) has a wiring arrangement (30) on the front side (6) of the stator, via the connection pins (24-29) are interconnected to define the stator coil strands (11-13) and/or to generate the rotary magnetic field with the rotary supply voltage.
2. Stator nach Anspruch 1 , dadurch gekennzeichnet, dass der Stator (1) mehrere Statorspulengruppen (31 , 32) aufweist und dass eine Statorspulengruppe (31 , 32) dadurch definiert ist, dass die Statorspulengruppe (31 , 32) eine erste Statorspule (14) und dazu in Reihe oder parallel geschaltet eine zweite Statorspule (15) aufweist, wobei dem Spulenende der ersten Statorspule (14) und dem Spulenanfang der zweiten Statorspule (15) ein Anschlusspin (24-29) zugeordnet ist, und wobei diese beiden Anschlusspins (24-29) zur Erzeugung der Reihenschaltung bzw. Parallelschaltung auf der Statorvorderseite (6) mittels der Verschaltungsanordnung (30), insbesondere mittels einer Radialbrücke (33, 34), verbunden sind, vorzugsweise, dass die erste Statorspule (14) und die zweite Statorspule (15) um mindestens eine Statornut (5), vorzugsweise um genau eine Statornut (5), zueinander versetzt angeordnet sind. 2. Stator according to Claim 1, characterized in that the stator (1) has a plurality of stator coil groups (31, 32) and that a stator coil group (31, 32) is defined in that the stator coil group (31, 32) has a first stator coil (14 ) and has a second stator coil (15) connected in series or in parallel, a connection pin (24-29) being assigned to the coil end of the first stator coil (14) and the coil start of the second stator coil (15), and these two connection pins ( 24-29) are connected to produce the series connection or parallel connection on the front side of the stator (6) by means of the interconnection arrangement (30), in particular by means of a radial bridge (33, 34), preferably that the first stator coil (14) and the second stator coil (15) are offset from one another by at least one stator slot (5), preferably by exactly one stator slot (5).
3. Stator nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Stator (1) mehrere Statorspulenmodule (35-58) aus mindestens einer Statorspule (14-17), vorzugsweise aus mehreren Statorspulen (14-17), aufweist, vorzugsweise, dass ein Statorspulenmodul (35-58) dadurch definiert ist, dass das Statorspulenmodul (35, 38) von mindestens zwei in Reihe oder parallel geschalteten Statorspulengruppen (31, 32), vorzugsweise einer Primär-3. Stator according to Claim 1 or 2, characterized in that the stator (1) has a plurality of stator coil modules (35-58) consisting of at least one stator coil (14-17), preferably a plurality of stator coils (14-17), preferably that a stator coil module (35-58) is defined in that the stator coil module (35, 38) consists of at least two stator coil groups (31, 32) connected in series or in parallel, preferably a primary
Statorspulengruppe (31) und einer Sekundär-Statorspulengruppe (32), gebildet ist, vorzugsweise, dass die Statorspulengruppen (31 , 32) um mehrere Statornuten (6) und/oder um eine Spulenbreite (18) zueinander versetzt angeordnet sind. Stator coil group (31) and a secondary stator coil group (32), preferably in that the stator coil groups (31, 32) are arranged offset from one another by a plurality of stator slots (6) and/or by a coil width (18).
4. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein formstabiler, zweischenkliger Hairpin zweiter Art (59), der zumindest zum Teil nach Art einer U-Form zwei von einem Verbindungsschenkel (60) abragende Hairpinschenkel (61 , 62) aufweist, vorgesehen ist, dass die Hairpin- schenkel (61 62) des Hairpins zweiter Art (59) ausgehend von dem Verbindungsschenkel (60) von der Statorvorderseite (6) zu der Statorhinterseite (7) in den Statornuten (5) verläuft und dass der Hairpin zweiter Art (59) auf der Statorhinterseite (7) die Reihenschaltung bzw. Parallelschaltung zwischen den Statorspulengruppen (31 , 32), insbesondere durch Verbindung des Spulenendes der zweiten Spule (15) der Primär-Statorspulengruppe (31) mit dem Spulenanfang der ersten Spule (16) der Sekundär-Statorspulengruppe (32), herstellt. - 15 - 4. Stator according to one of the preceding claims, characterized in that a dimensionally stable, two-leg hairpin of the second type (59), which has two hairpin legs (61, 62) protruding at least partly in the manner of a U-shape, it is provided that the hairpin legs (61 62) of the hairpins of the second type (59) runs from the connecting leg (60) from the front of the stator (6) to the rear of the stator (7) in the stator slots (5) and that the hairpin of the second Art (59) on the rear side (7) of the stator, the series connection or parallel connection between the stator coil groups (31, 32), in particular by connecting the coil end of the second coil (15) of the primary stator coil group (31) to the coil start of the first coil (16 ) of the secondary stator coil assembly (32). - 15 -
5. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dem Spulenende der zweiten Spule (15) der Primär- Statorspulengruppe (31) und dem Spulenanfang der ersten Spule (16) der Se- kundär-Statorspulengruppe (32) jeweils ein Anschlusspin (24-29) zugeordnet ist und dass diese Anschlusspins (24-29) zur Erzeugung der Reihenschaltung bzw. Parallelschaltung zwischen den Statorspulengruppen (31 , 32) mittels der Verschaltungsanordnung (30), insbesondere mittels einer Tangentialbrücke, verbunden sind. 5. Stator according to one of the preceding claims, characterized in that the coil end of the second coil (15) of the primary stator coil group (31) and the beginning of the coil of the first coil (16) of the secondary stator coil group (32) each have a connection pin ( 24-29) and that these connection pins (24-29) are connected to produce the series connection or parallel connection between the stator coil groups (31, 32) by means of the interconnection arrangement (30), in particular by means of a tangential bridge.
6. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Statorspulenmodule (35-58) jeweils mindestens zwei Modulanschlüsse (63, 64) für den Anschluss an die Dreh-Versorgungsspannung (u, v, w) bereitstellen, vorzugsweise, dass für jedes Statorspulenmodul (35-58) ein Anschlusspin (24-29) dem Spulenanfang der ersten Spule (14) der Primär- Spulengruppe (14) zugeordnet ist und dass ein weiterer Anschlusspin (24-29) dem Spulenende der zweiten Spule (17) der Sekundär-Spulengruppe (32) zugeordnet ist und dass diese Anschlusspins (24-29) die Modulanschlüsse (63, 64) des jeweiligen Statorspulenmoduls (35-58) für den Anschluss an die Dreh- Versorgungsspannung (u, v, w) bereitstellen. 6. Stator according to one of the preceding claims, characterized in that the stator coil modules (35-58) each provide at least two module connections (63, 64) for connection to the rotary supply voltage (u, v, w), preferably that for each stator coil module (35-58) has a connection pin (24-29) assigned to the coil start of the first coil (14) of the primary coil group (14) and that a further connection pin (24-29) is assigned to the coil end of the second coil (17) of the Secondary coil group (32) is assigned and that these connection pins (24-29) provide the module connections (63, 64) of the respective stator coil module (35-58) for connection to the rotary supply voltage (u, v, w).
7. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Statorspulenanordnung (10) mehrere Statorspulenmodule (35-58) aufweist, die entlang des Umfangs des Stators (1) verteilt in den Statornuten (5) angeordnet sind und dass die Statorspulenmodule (35-58) über die Verschaltung der Anschlusspins (24-29) mittels der Verschaltungsanordnung (30) die Statorspulenstränge (11-13) ausbilden. 7. Stator according to one of the preceding claims, characterized in that the stator coil arrangement (10) has a plurality of stator coil modules (35-58) which are distributed in the stator slots (5) along the circumference of the stator (1) and that the stator coil modules ( 35-58) form the stator coil strands (11-13) via the interconnection of the connection pins (24-29) by means of the interconnection arrangement (30).
8. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verschaltungsanordnung (30) zumindest zum Teil zusammenhängend ausgestaltet ist, vorzugsweise, dass die Verschaltungsanordnung (30) mindestens einen zusammenhängenden, auf die Statorvorderseite (6) aufgesetzten Verschaltungsring (65) aufweist, über den die Anschlusspins (24-29) zur Definition der Statorspulenstränge (11-13) miteinander und/oder zur Erzeugung des Dreh-Magnetfelds mit der Dreh-Versorgungsspannung (u, v, w) verschaltet sind, vorzugsweise, dass der Verschaltungsring (65) für zumindest ei- - 16 - nen Teil der Statorspulenmodule (35-58) eine Radialbrücke (33) und/oder eine Tangentialbrücke bereitstellt. 8. Stator according to one of the preceding claims, characterized in that the interconnection arrangement (30) is designed at least in part to be continuous, preferably in that the interconnection arrangement (30) has at least one continuous interconnection ring (65) placed on the front side of the stator (6), via which the connection pins (24-29) are interconnected to define the stator coil strands (11-13) and/or to generate the rotating magnetic field with the rotating supply voltage (u, v, w), preferably that the connection ring (65 ) for at least one - 16 - provides a radial bridge (33) and/or a tangential bridge as part of the stator coil modules (35-58).
9. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verschaltungsanordnung (30) mindestens einen zusammenhängenden, auf die Statorvorderseite (6) aufgesetzten Verschaltungsring erster Art aufweist, über den die Anschlusspins (24-29) zur Definition der Statorspulenstränge (11-13) miteinander verschaltet sind, und, dass die Verschaltungsanordnung (30) mindestens einen zusammenhängenden, auf die Statorvorderseite (6) und/oder auf den Verschaltungsring erster Art aufgesetzten Verschaltungsring zweiter Art aufweist, über den die Anschlusspins (24-29) zur Erzeugung des Dreh-Magnetfelds mit der Dreh-Versorgungsspannung (u, v, w) verschaltet sind. 9. Stator according to one of the preceding claims, characterized in that the interconnection arrangement (30) has at least one connected interconnection ring of the first type which is placed on the front side of the stator (6) and via which the connection pins (24-29) for defining the stator coil strands (11- 13) are interconnected, and that the interconnection arrangement (30) has at least one connected interconnection ring of the second type placed on the front side of the stator (6) and/or on the interconnection ring of the first type, via which the connection pins (24-29) are used to generate the Rotating magnetic field with the rotating supply voltage (u, v, w) are connected.
10. Stator nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Hairpins erster Art (20) identisch zueinander ausgestaltet sind, und/oder, dass die Hairpins zweiter Art (59) identisch zueinander ausgestaltet sind, und/oder, dass die Anschlusspins (24-29) identisch zueinander ausgestaltet sind. 10. Stator according to one of the preceding claims, characterized in that the hairpins of the first type (20) are configured identically to one another and/or that the hairpins of the second type (59) are configured identically to one another and/or that the connection pins ( 24-29) are designed identical to each other.
11. Rotierende Drehfeldmaschine mit einem Stator (1) nach einem der vorhergehenden Ansprüche und einem Rotor, der magnetisch mit der Statorspulenanordnung (10) wechselwirkt. 11. Rotating induction machine with a stator (1) according to one of the preceding claims and a rotor which interacts magnetically with the stator coil arrangement (10).
PCT/EP2022/085948 2021-12-14 2022-12-14 Stator for a rotating three-phase machine WO2023111074A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021006172.1 2021-12-14
DE102021006172.1A DE102021006172A1 (en) 2021-12-14 2021-12-14 Stator for a rotating induction machine

Publications (1)

Publication Number Publication Date
WO2023111074A1 true WO2023111074A1 (en) 2023-06-22

Family

ID=84800075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2022/085948 WO2023111074A1 (en) 2021-12-14 2022-12-14 Stator for a rotating three-phase machine

Country Status (2)

Country Link
DE (1) DE102021006172A1 (en)
WO (1) WO2023111074A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019126338A1 (en) * 2019-09-30 2021-04-01 Valeo Siemens Eautomotive Germany Gmbh Stator with pins for an electrical machine
WO2021065297A1 (en) * 2019-09-30 2021-04-08 日本電産株式会社 Stator and motor
FR3101736A1 (en) * 2019-10-04 2021-04-09 Valeo Equipements Electriques Moteur Electric winding for a rotating electric machine
DE102019219683A1 (en) 2019-12-16 2021-06-17 Zf Friedrichshafen Ag Method of manufacturing a hairpin stator core, stator core and electric motor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9017835U1 (en) 1990-10-04 1992-03-12 Robert Bosch Gmbh, 7000 Stuttgart Stands for electrical machines
JP5560176B2 (en) 2010-12-08 2014-07-23 トヨタ自動車株式会社 Motor and motor manufacturing method
FR3018964B1 (en) 2014-03-24 2016-03-04 Valeo Equip Electr Moteur INTERCONNECTION ELEMENT FOR CONNECTING STATOR COILS
DE102016200115A1 (en) 2016-01-08 2017-07-13 Zf Friedrichshafen Ag Stator of an electrical machine with a connection device for stator coils and electrical machine with such a stator
US10447108B2 (en) 2017-02-22 2019-10-15 Gm Global Technology Operations Llc. Distributed connection ring assembly for stator assembly

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019126338A1 (en) * 2019-09-30 2021-04-01 Valeo Siemens Eautomotive Germany Gmbh Stator with pins for an electrical machine
WO2021065297A1 (en) * 2019-09-30 2021-04-08 日本電産株式会社 Stator and motor
FR3101736A1 (en) * 2019-10-04 2021-04-09 Valeo Equipements Electriques Moteur Electric winding for a rotating electric machine
DE102019219683A1 (en) 2019-12-16 2021-06-17 Zf Friedrichshafen Ag Method of manufacturing a hairpin stator core, stator core and electric motor

Also Published As

Publication number Publication date
DE102021006172A1 (en) 2023-06-15

Similar Documents

Publication Publication Date Title
DE102014105428A1 (en) Winding layout for a stator with bar windings with windings having an extended coil width and a shortened coil width
WO2014166872A2 (en) Electric machine
DE102012113095B4 (en) Brushless motor
DE202015008207U1 (en) Stator of an electric motor and switching unit for this
DE112007002847T5 (en) DC motor
WO2020047568A1 (en) Stator for an electrical machine
EP1969697B1 (en) Electric machine, in particular alternator for a motor vehicle
EP3146619B1 (en) Electric machine
DE112021001268T5 (en) STATOR WITH WAVY COIL STRUCTURE, THREE-PHASE AC MOTOR EQUIPPED THEREFORE AND METHOD OF MANUFACTURING THE STATOR
DE10049883A1 (en) Multiphase motor with winding consisting of one or several motor modules formed by number of coil groups, which consist of several coils arranged next to each other
DE102014222064B4 (en) Electric machine
WO2013023819A2 (en) Electrical machine
DE102020115642B3 (en) Electric motor and circuit board
DE102018111119A1 (en) Method for producing a winding for a stator of an electrical machine and electric machine
DE3320805C2 (en)
WO2022033788A1 (en) Stator for an electric machine, and electric machine
EP2026450B1 (en) Electric machine with a winding for producing a rotating field and method for producing the winding
DE102011084716A1 (en) Electric machine i.e. synchronous electric machine, has rotor comprising rotor poles, stator comprising stator teeth, and coils divided into multiple coil groups, where coils in each coil group are arranged adjacent to each other
DE202018001139U1 (en) Electric universal engine
WO2023111074A1 (en) Stator for a rotating three-phase machine
DE60022973T2 (en) Stator of an alternator for vehicles
DE102012103731A1 (en) electric motor
WO2010145841A2 (en) Stator for an electric motor
DE102020001770A1 (en) Stator for an electrical machine
DE102020203945A1 (en) Stator winding system with serial coil winding

Legal Events

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

Ref document number: 22835768

Country of ref document: EP

Kind code of ref document: A1