WO2020224694A1 - Stator à construction modulaire d'une machine électrique - Google Patents

Stator à construction modulaire d'une machine électrique Download PDF

Info

Publication number
WO2020224694A1
WO2020224694A1 PCT/DE2020/100172 DE2020100172W WO2020224694A1 WO 2020224694 A1 WO2020224694 A1 WO 2020224694A1 DE 2020100172 W DE2020100172 W DE 2020100172W WO 2020224694 A1 WO2020224694 A1 WO 2020224694A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
tooth
coil
modular
slot wedge
Prior art date
Application number
PCT/DE2020/100172
Other languages
German (de)
English (en)
Inventor
Peter Schwanemann
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2020224694A1 publication Critical patent/WO2020224694A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148—Sectional cores
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H02K3/487—Slot-closing devices
    • H02K3/493—Slot-closing devices magnetic

Definitions

  • the invention relates to a modular stator of an electrical machine.
  • a stator known from the prior art usually comprises a plurality of stator slots in which so-called excitation windings are arranged.
  • a current flow through the field windings generates a magnetic field of the Sta sector, which z. B. interacts with a magnetic field of a rotor of an electrical Ma machine to produce a rotary motion.
  • slot wedges are inserted into the slots.
  • the slot wedges close an opening in the stator slot.
  • a key factor in electrical machines is the power density that can be achieved in a defined installation space.
  • the achievable active sheet metal length and the degree of copper filler that can be achieved in it, as well as the connection of the copper to the laminated core, are particularly relevant.
  • stator also plays a role in achieving a high power density.
  • a modular stator of an electrical machine comprises:
  • Each stator tooth has a foot element to form an outer stator ring and two tooth flanks.
  • the two tooth flanks are preferably inclined towards one another.
  • the stator tooth is preferably designed to be trapezoidal in cross section.
  • the foot element has an engagement element, in particular a groove, for a receiving element on the side of the first tooth flank.
  • the foot element advantageously has a receiving element, in particular a spring, for the engagement element on the side of the second tooth flank.
  • the engagement element is preferably designed to engage in the receiving element.
  • each stator tooth has a head element which has a connecting area for a positive connection with a Nutkeilele element.
  • the modular stator advantageously has a pre-wound and pre-formed coil element which is adapted to the shape of a stator tooth.
  • the coil element is designed as a so-called concentrated Wick development.
  • the modular stator comprises a slot wedge element that is inserted between two adjacent stator teeth and is in a handle with a respective connection area of a head element of the stator teeth.
  • a slot wedge element With the aid of a slot wedge element, a coil element can be fixed in the stator slots or on a stator tooth or secured against slipping out of the stator slots, the slot wedge element closing an opening in the stator slot.
  • slot wedge elements are used for wedging or stabilizing the winding or the winding body within a slot. Namely, a coil element can thus be secured to a stator tooth.
  • Each stator tooth has a base element to form an outer stator ring and two tooth flanks which are inclined to one another,
  • the foot element having an engagement element, in particular a groove, for a receiving element on the side of the first tooth flank,
  • the foot element having a receiving element, in particular a spring, for the engagement element on the side of the second tooth flank,
  • the engagement element is designed to precisely ensure that the receiving element,
  • Each stator tooth has a head element which has a connecting area for a positive connection with a slot wedge element
  • a slot wedge element inserted between two adjacent stator teeth and in engagement with a respective connection area of a head element of the stator teeth.
  • the aforementioned combination of features has the particular technical advantage that a modular stator of an electrical machine can thus be specified, which can be manufactured cost-effectively and in a material-saving manner and enables a particularly large increase in power density.
  • the coil element advantageously has a rectangular wire and / or a rod and / or a round wire.
  • the coil element has a shaped wire which is adapted to the groove geometry between two adjacent stator teeth.
  • the modular stator is designed as a solid core with distributed winding with rectangular wires (for example hairpin, I-pin, wave winding, etc.).
  • the flanks of the grooves of the stator preferably run parallel to one another.
  • it is therefore preferably very close to the laminated core of the stator over the entire depth of the groove, so that there is advantageously a good thermal connection between the copper and the stator core.
  • the coil element is preferably designed with or without a coil body.
  • the coil element is formed out with or without insulating paper.
  • the modular stator is preferably designed as a single layer, where in this embodiment only every second stator tooth carries a coil element.
  • each stator tooth in this embodiment carrying a coil element.
  • a coil element advantageously extends from one stator tooth and another.
  • one coil element abuts another.
  • the diameters of the coil elements are thus preferably designed differently in the respective configurations.
  • the wire of the preformed coil element is clamped in itself and / or is provided with an adhesive substance in order to lock the predetermined shape before it is attached to a stator tooth.
  • the coil element is clamped and / or encapsulated and / or impregnated and / or already through the slot wedge element near the air gap to fix it in the slots of the fully assembled stator
  • the clamping system used in the assembly and / or the adhesive material is held in place.
  • the slot wedge element advantageously has an engagement area, in particular two engagement areas, for engaging the connecting areas of a head element of the stator teeth.
  • the engagement area is geometrically designed such that it engages positively and / or frictionally in the connection area of a head element of the stator teeth.
  • the engagement area and the connection area form a type of dovetail connection.
  • slot wedge element prefferably designed to be magnetically non-conductive and / or magnetically conductive.
  • the groove wedge element is preferably designed as a multi-component element which is partially magnetically conductive and partially non-magnetically conductive.
  • the slot wedge element preferably comprises a magnetically conductive component and a non-magnetically conductive component.
  • the magnetically conductive component has a parabolic profile in cross section within the slot wedge element.
  • the magnetically conductive component advantageously has a cross section within the slot wedge element which is based on a ship's anchor.
  • the shape or the course of the magnetically conductive component in cross section within a slot wedge element is designed to optimize the magnetic flux with regard to the respective design and application of the respective stator.
  • the engagement element is designed to engage in the receiving element in a form-fitting and / or frictional manner.
  • the modular stator advantageously has a multiplicity of stator teeth.
  • a stator or an electric machine stator is advantageously constructed with concentrated windings.
  • a stator tooth of the stator expediently tapers in a trapezoidal shape, with preferably no tooth tips or head elements being formed.
  • the coils of the teeth or the coil elements are advantageously placed on the teeth.
  • the coil elements are preferably fixed in a slot of the stator by slot wedge elements that are not magnetically conductive or partially or completely magnetically conductive and / or treated by potting and / or impregnation.
  • FIG. 1 shows a plan view of a stator according to the invention which is built on a modular basis according to a first exemplary embodiment
  • FIG. 2 shows a plan view of a stator according to the invention, which is constructed in a modular manner, according to a second exemplary embodiment
  • FIG. 3 shows an enlarged illustration of part of FIG. 1
  • FIG. 4 shows an enlarged illustration of part of FIG. 2
  • Figure 1 shows a plan view of a modular Sta tor according to the invention according to a first embodiment.
  • Figure 1 shows a modular stator 1 of an electrical machine's rule. This has a multiplicity of stator teeth 2, 3, a first stator tooth 2 and a second stator tooth 3, which are connected to one another and arranged adjacent to one another, are dealt with below by way of example.
  • Each of the aforementioned stator teeth 2, 3 has a foot element 4, 5 for forming an external stator ring 6 and two tooth flanks 7, 8 which are inclined towards one another.
  • the foot element 4, 5 comprises a gripping element 9, in particular a groove, for a receiving element 10 on the side of the first tooth flank 7 and a receiving element 10, in particular a spring, for the engaging element 9 on the second tooth flank 8.
  • the engagement element 9 is designed to engage with the receiving element 10 in a form-fitting and / or frictional-fitting manner.
  • each stator tooth 2, 3 has a head element 1 1, which has two connecting areas 12, 13 for a positive connection with one slot wedge element 15 each.
  • the stator 1 has a pre-wound and pre-shaped coil element 14 which is adapted to the shape of a stator tooth 2, 3 and is constructed as a concentrated winding.
  • This coil element 14 is or will be pushed onto a stator tooth 2, 3.
  • stator 1 has a slot wedge element 15 or various slot wedge elements 15, which are inserted between two adjacent stator teeth 2, 3 and in engagement with each have a connection area 12, 13 of a head element 1 1 of the stator teeth 2, 3.
  • the modular stator 1 is formed as a single layer, with only every second stator tooth 2 carrying a coil element 14 in this embodiment.
  • the modular stator 1 is designed as a double layer, with each stator tooth 2, 3 carrying a coil element 14 in this embodiment.
  • each stator tooth 2, 3 carrying a coil element 14 in this embodiment.
  • FIG. 2 shows a plan view of a modular stator 1 according to the invention according to a second exemplary embodiment, FIG. 4 being an enlarged representation of a part of FIG.
  • Figures 1 to 4 show that the coil element 14 has a rectangular wire. It is also possible for the coil element 14 to have a rod and / or a round wire.
  • the coil element 14 prefferably has a shaped wire which is adapted to the groove geometry between two adjacent stator teeth 2, 3.
  • this coil element 14 is formed without a coil body and without insulation paper.
  • the wire of the pre-formed coil element 14 is also clamped in on itself and provided with an adhesive material in order to lock the predetermined shape before it is attached to a stator tooth 2, 3.
  • FIG. 5 shows various design options for slot wedge elements 15.
  • the coil element 14 is clamped in place in the grooves 16 of the fully assembled stator 1 near the air gap in order to fix it.
  • the slot wedge element 15 has two engagement areas 19, 20 for engaging the connecting areas 12, 13 of the head elements 11 of the stator teeth 2, 3.
  • Each engagement area 19, 20 is geometrically designed in such a way that it is positively and frictionally engaged in the connection area 12, 13 of a head element 11 of the
  • Stator teeth 2, 3 engages.
  • FIG. 5 shows that the slot wedge element 15 can be designed to be magnetically non-conductive and / or magnetically conductive.
  • the first slot wedge element 15 shown as an example in FIG. 5 is designed to be exclusively magnetically conductive.
  • slot wedge element 15 is designed as a multi-component element which is partially magnetically conductive and partially non-magnetically conductive.
  • the slot wedge element 15 has a magnetically conductive component 17 and a non-magnetically conductive component 18.
  • the magnetically conductive component 17 in cross section has a parabolic course within the slot wedge element 14, the magnetically conductive component 17 in a further embodiment has a course in cross section within the slot wedge element 14, which is based on a ship's anchor.
  • the shape or the course of the magnetically conductive component 17 in cross section within a slot wedge element 15 optimizes the magnetic flux with regard to the respective design and application of the respective stator 1.
  • FIGS. 1 to 5 are described again in different words.
  • stator 1 or the electric machine stator is constructed accordingly with concentrated windings.
  • a stator tooth 2, 3 is constructed in such a way that in the assembled state its tooth flanks 7, 8 of two adjacent individual teeth 2, 3 or stator teeth run parallel or only slightly obliquely to one another.
  • the tooth thus tapers in a trapezoidal shape.
  • the coils or coil elements 14 of the stator teeth 2, 3 are preformed from rectangle wires or rods (with or without bobbins and / or with / without insulating paper, depending on the application) and placed on the teeth 2, 3.
  • stator teeth 2, 3 it is also conceivable to preform the coil elements 14 of the stator teeth 2, 3 from shaped wire adapted to the groove geometry (with or without Spulenkör by and / or with / without insulation paper, depending on the application) and to attach them to the teeth.
  • stator 1 As shown in FIGS.
  • the stator 1 can be constructed as a single layer (only every second tooth carries a coil - see FIGS. 1 and 3) or as a double layer (each tooth carries a coil - see FIGS. 2 and 4).
  • the aim is to use this structure to achieve a very high copper slot fill factor and thus also to achieve a good thermal connection between the copper and the laminated core (not shown) of the stator 1.
  • the coil elements 14 are locked in their position via a clamping system and / or an adhesive material.
  • the coil elements 14 are clamped and / or potted and / or impregnated with a slot wedge element 15 near the air gap and / or by the clamping system and / or one already used in the assembly adhesive material held.
  • the slot wedge elements 15 listed as a variant cannot be made magnetically or magnetically conductive or can be constructed from multi-component elements, some of which are magnetically conductive and some are not magnetically conductive, in such a way that they form a tooth head ideal for the application for the respective adjacent teeth 2, 3 (compare FIG. 5).

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

L'invention concerne un stator (1) à construction modulaire qui comprend les caractéristiques suivantes : - une première dent de stator (2) et une deuxième dent de stator (3) qui sont reliées entre elles et disposées l'une à côté de l'autre, - chaque dent de stator (2, 3) comprenant un élément de base (4, 5) pour la formation d'un anneau de stator (6) externe et deux flancs de dent (7, 8) qui sont inclinés l'un contre l'autre, - l'élément de base (4, 5) comportant, sur le premier flanc de dent (7), un élément d'engagement (9), notamment une rainure, pour un élément de réception (10), - l'élément de base (4, 5) comportant, sur le deuxième flanc de dent (8), un élément de réception (10), notamment une languette, pour l'élément d'engagement (9), l'élément d'engagement (9) étant conçu pour entrer en engagement avec l'élément de réception (10), - chaque dent de stator (2, 3) comprenant un élément de tête (11) qui comporte une zone de liaison (12, 13) pour une liaison par complémentarité de formes avec un élément de cale d'encoche (15), - un élément de bobine (14) pré-enroulé et préformé adapté à la forme d'une dent de stator (2, 3), - ledit élément de bobine (14) étant poussé sur une dent de stator (2, 3), et un élément de cale d'encoche (15) inséré entre deux dents de stator adjacentes (2, 3) et en engagement avec une zone de liaison respective (12, 13) d'un élément de tête (11) des dents de stator (2, 3).
PCT/DE2020/100172 2019-05-09 2020-03-10 Stator à construction modulaire d'une machine électrique WO2020224694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019112053.5 2019-05-09
DE102019112053.5A DE102019112053A1 (de) 2019-05-09 2019-05-09 Modular aufgebauter Stator einer elektrischen Maschine

Publications (1)

Publication Number Publication Date
WO2020224694A1 true WO2020224694A1 (fr) 2020-11-12

Family

ID=70005567

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2020/100172 WO2020224694A1 (fr) 2019-05-09 2020-03-10 Stator à construction modulaire d'une machine électrique

Country Status (2)

Country Link
DE (1) DE102019112053A1 (fr)
WO (1) WO2020224694A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022217426A1 (fr) * 2021-04-12 2022-10-20 舍弗勒技术股份两合公司 Cale de fermeture d'encoche pour un ensemble stator et ensemble stator
CN114362407B (zh) * 2021-12-29 2024-01-30 浙江源新智能电机有限公司 电机、电机定子及弯折式复合磁性槽楔

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915553A2 (fr) * 1997-11-10 1999-05-12 Siemens Aktiengesellschaft Moteur linéaire
US20040189136A1 (en) * 2003-03-31 2004-09-30 Kolomeitsev Sergei F. Stator design for permanent magnet motor with combination slot wedge and tooth locator
JP2007221913A (ja) * 2006-02-16 2007-08-30 Sawafuji Electric Co Ltd 回転電機用電機子

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915553A2 (fr) * 1997-11-10 1999-05-12 Siemens Aktiengesellschaft Moteur linéaire
US20040189136A1 (en) * 2003-03-31 2004-09-30 Kolomeitsev Sergei F. Stator design for permanent magnet motor with combination slot wedge and tooth locator
JP2007221913A (ja) * 2006-02-16 2007-08-30 Sawafuji Electric Co Ltd 回転電機用電機子

Also Published As

Publication number Publication date
DE102019112053A1 (de) 2020-11-12

Similar Documents

Publication Publication Date Title
EP1114500B1 (fr) Moteur electrique
EP1282931B1 (fr) Stator
EP2606557B1 (fr) Stator d'un moteur électrique
DE102005024653A1 (de) Stator einer sich drehenden elektrischen Maschine und Herstellungsverfahren des Stators
WO2020224694A1 (fr) Stator à construction modulaire d'une machine électrique
DE4122076A1 (de) Verfahren zur herstellung einer statorwicklung mit profilleitern fuer elektrische maschinen
EP0514424B1 (fr) Bobine excitatrice formee de toles empilees, moteur electrique muni de telles bobines et procede de fabrication desdites bobines
DE102005059846A1 (de) Stator einer elektrischen Maschine
DE102020101149A1 (de) Axialflussmaschine mit mechanisch fixierten Statorkernen mit radial verlaufenden Blechsegmenten
DE102014217289A1 (de) Wicklungsanordnung und Verfahren zur Herstellung einer Wicklungsanordnung
EP3580835A1 (fr) Enroulement d'une machine électrique présentant un degré de remplissage plus élevé
DE69832163T2 (de) Verfahren zur vorbereitung und einbringen von wicklungen für elektromotoren
EP2929618A2 (fr) Combinaison de bobines-segments dentés pour une machine électrique
WO2016177500A1 (fr) Dent d'enroulement d'un moteur électrique
EP3167540B1 (fr) Procédé de fabrication d'une machine électrique comportant des bobines formées et machine électrique et outil de fabrication
DE10112268A1 (de) Elektrische Maschine
DE102011004612B4 (de) Spule für eine Elektromaschine mit verbessertem Wicklungsfüllfaktor
DE102012212768A1 (de) Statorelement zum Aufbau eines Stators für eine elektrische Maschine sowie ein Verfahren zum Herstellen einer Statoranordnung für eine elektrische Maschine
EP2067237B1 (fr) Machine synchrone
DE202019105598U1 (de) Stator mit optimiertem Wickelraum
EP3624310B1 (fr) Stator à isolation compacte ainsi que procédé de fabrication d'un tel stator
DE102013226149A1 (de) Maschinenkomponente für eine elektrische Maschine und Verfahren zur Herstellung einer Maschinenkomponente
WO1992001325A1 (fr) Cylindre d'alimentation en retour pour petits moteurs electriques
WO2022109647A1 (fr) Composant de machine pour une machine électrique
DE102021210400A1 (de) Verfahren zum Herstellen eines Stators, insbesondere für einen EC-Motor, sowie ein Stator und eine elektrische Maschine hergestellt nach diesem Verfahren

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: 20714112

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 20714112

Country of ref document: EP

Kind code of ref document: A1