DE10336780A1 - Winding coil for electric drive device e.g. reluctance machine, has prefabricated coil pushed over teeth of electric drive device - Google Patents

Winding coil for electric drive device e.g. reluctance machine, has prefabricated coil pushed over teeth of electric drive device Download PDF

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Publication number
DE10336780A1
DE10336780A1 DE2003136780 DE10336780A DE10336780A1 DE 10336780 A1 DE10336780 A1 DE 10336780A1 DE 2003136780 DE2003136780 DE 2003136780 DE 10336780 A DE10336780 A DE 10336780A DE 10336780 A1 DE10336780 A1 DE 10336780A1
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DE
Germany
Prior art keywords
drive device
electric drive
coil
winding
pushed over
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
DE2003136780
Other languages
German (de)
Inventor
Stefan Bauer
Rik W. de Prof. Dr. Doncker
Christian Carstensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rheinisch Westlische Technische Hochschuke RWTH
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Rheinisch Westlische Technische Hochschuke RWTH
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 Rheinisch Westlische Technische Hochschuke RWTH filed Critical Rheinisch Westlische Technische Hochschuke RWTH
Priority to DE2003136780 priority Critical patent/DE10336780A1/en
Publication of DE10336780A1 publication Critical patent/DE10336780A1/en
Withdrawn legal-status Critical Current

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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
    • H02K3/18—Windings for salient poles
    • 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

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

Abstract

A prefabricated coil, for an electrical drive device, can be pushed over the stator teeth of the electric drive device. Optimized geometry of the coil allows the available winding space to be utilized to the maximum.

Description

Stand der TechnikState of technology

Bei elektrischen Maschinen werden Wicklungen typischerweise vorgewickelt und dann in den Stator der Maschine eingebracht.at Electric machines are typically pre-wound windings and then placed in the stator of the machine.

Eine Möglichkeit der Wicklungseinbringung in eine geschaltete Reluktanzmaschine ist es, die auf einem Wickeldorn vorgefertigte Wicklung auf den Statorzahn aufzuschieben und dann mittels eines Überzugslacks zu imprägnieren.A possibility winding insertion into a switched reluctance machine it, the winding on a mandrel prefabricated winding on the stator tooth postpone and then impregnated by means of a coating varnish.

Eine weitere Möglichkeit ist die Wicklung auf einen Spulenkörper aufzubringen und dann zusammen mit dem Spulenkörper auf den Statorzahn zu schieben.A another possibility the winding is applied to a bobbin and then together with the bobbin to push on the stator tooth.

Beiden Bauweisen gemeinsam ist die schlechte Ausnutzung des zur Verfügung stehenden Wickelraumes. Da die Wicklung (3) des benachbarten Rotorzahnes an der (1) des bereits bestückten Zahnes vorbeigeführt werden muss, sind die Wicklungen maximal halb so breit wie die Öffnung zwischen zwei Statorzähnen auszuführen (1). Zwischen zwei Wicklungen verbleibt demnach eine im Querschnitt nahezu dreieckförmige Fläche (2), die nicht für die Wicklung genutzt werden kann.Both types of construction have in common the poor utilization of the available changing room. Since the winding (3) of the adjacent rotor tooth must be guided past the (1) of the already equipped tooth, the windings are maximally half as wide as the opening between two stator teeth ( 1 ). Accordingly, a surface (2) which is almost triangular in cross section remains between two windings and can not be used for the winding.

Eine Möglichkeit, diese Fläche zu nutzen ist das Einwickeln der Wicklung direkt in die Maschine. Hierbei wird jedoch aufgrund der Raum- und Einbauverhältnisse ein schlechter Füllfaktor erreicht. Dadurch enthält die Wicklung viel Luft, weshalb die im Kupfer entstehende Wärme schlecht aus der Wicklung geleitet werden kann.A Possibility, this area to use is the wrapping of the winding directly into the machine. in this connection However, due to the space and installation conditions, a poor fill factor reached. This includes The winding a lot of air, which is why the resulting heat in the copper bad can be routed out of the winding.

Beschreibung der Erfindungdescription the invention

In der Erfindung wird eine Möglichkeit gegeben, mit einer außerhalb der Maschine vollständig vorgefertigten Spule diesen bisher nicht genutzten Raum auszunutzen.In The invention becomes a possibility given, with an outside the machine completely prefabricated Coil exploit this previously unused space.

Dazu wird erfindungsgemäß eine Formwicklung einer neuen, optimierten Geometrie (2) vorgeschlagen, die es gestattet, eine bessere Ausnutzung des zur Verfügung stehenden Raumes auch bei vorgefertigten Wicklungen zu erreichen. Dabei wird der Querschnitt der Wicklung ab einer Knickhöhe hk derart abgeschrägt, dass eine zweite Wicklung an einer bereits eingebauten Wicklung vorbeigeführt werden kann Dabei kann die Breite der Wicklung am Nutgrund größer ausgeführt werden als bei einer Wicklung mit rechteckigem Querschnitt. Es hat sich als zweckmäßig erwiesen, die Wicklung bereits vor der Montage zu stabilisieren. Dies kann beispielsweise über Verguss, Bandagierung usw. geschehen. Durch die Fertigung außerhalb der Maschine kann ein hoher Kupferfüllfaktor erreicht werden. Es gibt durch Verguss kaum Lufteinschlüsse, wodurch der Wärmeübergang innerhalb der Wicklung sehr gut ist (3). Eine Isolation zwischen Statorzahn und Wicklung kann bereits in der Vorfertigung mit in die Wicklung integriert werden (2). Die fertige Wicklung lässt über den Zahn schieben und beispielsweise mit einem wärmeleitfähigen Kleber verkleben. Beispielsweise kann bei einer 2 ähnlichen Maschinengeometrie durch die neue Art der Wicklung 11 % Wickelraum hinzugewonnen werden. Bei deutlich geringerem Drahtdurchmesser als bei einer vorhandenen Wicklung (parallelgeschalteter, dünner Draht lässt geringere Verluste erwarten, allerdings verringert sich normalerweise aufgrund eines höheren Isolierstoffanteils insgesamt der Füllfaktor) wurde eine Steigerung der Kupfermenge um 13% erreicht. Da die Kupferverluste entscheidend für die thermische Belastung der Maschine sind, dürfte sich die Leistungsdichte entsprechend erhöhen.For this purpose, according to the invention, a shape winding of a new, optimized geometry ( 2 ), which makes it possible to achieve a better utilization of the available space even with prefabricated windings. In this case, the cross section of the winding is bevelled starting from a bend height h k such that a second winding can be guided past an already installed winding. The width of the winding at the groove bottom can be made larger than in the case of a winding with a rectangular cross section. It has proven to be useful to stabilize the winding before mounting. This can be done, for example, via potting, bandaging, etc. By manufacturing outside the machine, a high copper fill factor can be achieved. There are hardly any air pockets due to encapsulation, whereby the heat transfer within the winding is very good ( 3 ). An insulation between the stator tooth and the winding can already be integrated into the winding during prefabrication ( 2 ). The finished winding can slide over the tooth and glue for example with a thermally conductive adhesive. For example, at a 2 similar machine geometry can be gained by the new type of winding 11% winding space. With a significantly smaller wire diameter than with an existing winding (parallel connected, thin wire can be expected lower losses, but usually reduces due to a higher insulating material content in total, the filling factor), an increase in the amount of copper was achieved by 13%. Since the copper losses are decisive for the thermal load of the machine, the power density should increase accordingly.

In anderen geometrischen Ausführungen kann der Wickelraum auch größere Werte annehmen.In other geometric designs can the changing room also larger values accept.

von den Zeichnungen zeigt:from the drawings shows:

1: Bisher eingesetzter Wicklungsquerschnitt 1 : Previously used winding cross-section

2: Erfindungsgemäßer Wicklungsquerschnitt 2 : Inventive winding cross-section

hk h k
Knickhöhebuckling height
hmax h max
maximale Wicklungshöhemaximum winding height
hn h n
Wicklungshöhewinding height
b2 b 2
maximale Breite der Wicklung bei hn maximum width of the winding at h n
bb
Wicklungsbreite am Nutgrundwinding width at the bottom of the groove
r1 r 1
Innenradius des Statorsinner radius of the stator
z/2z / 2
halbe Zahnbreitehalf tooth width

Claims (4)

Spule für elektrische Antriebseinrichtung die vorgefertigt über Statorzähne einer elektrischen Antriebseinrichtung geschoben werden kann, dadurch gekennzeichnet, dass sie über die in der Beschreibung genannte optimierte Geometrie den zur Verfügung stehenden Wickelraum maximal ausnutzt.Coil for electric drive device which can be pushed over prefabricated stator teeth of an electric drive device, characterized in that it utilizes the available winding space to a maximum on the above-mentioned optimized geometry in the description. Spule für elektrische Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Form der Spule über eine Fixierung vor der Montage festgelegt ist.Coil for Electric drive device according to claim 1, characterized in that that the shape of the coil over a fixation is fixed before mounting. Spule für elektrische Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass über einen Verguss eine Wärmeleitungsverbesserung innerhalb der Spule erreicht wird.Coil for electric drive device according to claim 1, characterized in that via a potting a heat conduction improvement in is reached within the coil. Spule für elektrische Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass eine Spulenkühleinrichtung bereits vor der Montage in die Maschine integriert ist.Coil for Electric drive device according to claim 1, characterized in that that a coil cooling device already integrated in the machine before assembly.
DE2003136780 2003-08-08 2003-08-08 Winding coil for electric drive device e.g. reluctance machine, has prefabricated coil pushed over teeth of electric drive device Withdrawn DE10336780A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2003136780 DE10336780A1 (en) 2003-08-08 2003-08-08 Winding coil for electric drive device e.g. reluctance machine, has prefabricated coil pushed over teeth of electric drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2003136780 DE10336780A1 (en) 2003-08-08 2003-08-08 Winding coil for electric drive device e.g. reluctance machine, has prefabricated coil pushed over teeth of electric drive device

Publications (1)

Publication Number Publication Date
DE10336780A1 true DE10336780A1 (en) 2005-03-03

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806823A1 (en) * 2006-01-05 2007-07-11 Franco Policante Radial-flow electric motor with improvements in the composition of the stator windings.
US11296572B1 (en) 2020-09-21 2022-04-05 Evr Motors Ltd Electric machine with variable cross-sectional area constant perimeter trapezoidal teeth
US12046949B1 (en) 2023-12-28 2024-07-23 Evr Motors Ltd Electric machine with coils bridged with toothed clips
US12081073B2 (en) 2021-10-04 2024-09-03 Evr Motors Ltd Electric machine with multi-tapered yokes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875227C (en) * 1948-12-31 1953-04-30 Siemens Ag Rotary field machine with concentrated windings and pronounced poles with pole pieces
US3289021A (en) * 1962-12-03 1966-11-29 Golay Buchel & Cie Sa Rotary electric machine
DE69601623T2 (en) * 1995-04-03 1999-12-02 E.I. Du Pont De Nemours And Co., Wilmington INJECTION MOLDED MOTOR UNIT AND METHOD FOR THE PRODUCTION THEREOF
WO2002009256A1 (en) * 2000-07-21 2002-01-31 Robert Bosch Gmbh Stator having a high bulk factor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875227C (en) * 1948-12-31 1953-04-30 Siemens Ag Rotary field machine with concentrated windings and pronounced poles with pole pieces
US3289021A (en) * 1962-12-03 1966-11-29 Golay Buchel & Cie Sa Rotary electric machine
DE69601623T2 (en) * 1995-04-03 1999-12-02 E.I. Du Pont De Nemours And Co., Wilmington INJECTION MOLDED MOTOR UNIT AND METHOD FOR THE PRODUCTION THEREOF
WO2002009256A1 (en) * 2000-07-21 2002-01-31 Robert Bosch Gmbh Stator having a high bulk factor

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1806823A1 (en) * 2006-01-05 2007-07-11 Franco Policante Radial-flow electric motor with improvements in the composition of the stator windings.
US11374444B2 (en) 2020-09-21 2022-06-28 Evr Motors Ltd Method of forming irregular shaped coils of an electric machine
US11322994B2 (en) 2020-09-21 2022-05-03 Evr Motors Ltd Electric machine with multi-piece trapezoidal teeth
US11336132B2 (en) 2020-09-21 2022-05-17 Evr Motors Ltd Electric machine with liquid cooled coils and stator core
US11349359B2 (en) 2020-09-21 2022-05-31 Evr Motors Ltd Electric machine with SMC rotor core sandwiched between bandage and magnets
US11355985B2 (en) 2020-09-21 2022-06-07 Evr Motors Ltd Electric machine with stator base as common heat sink
US11296572B1 (en) 2020-09-21 2022-04-05 Evr Motors Ltd Electric machine with variable cross-sectional area constant perimeter trapezoidal teeth
US11451099B2 (en) 2020-09-21 2022-09-20 Evr Motors Ltd Method of inserting multi-part tooth of an electric machine into a coil
US11489379B2 (en) 2020-09-21 2022-11-01 Evr Motors Ltd Electric machine with SMC stator core
US11489378B2 (en) 2020-09-21 2022-11-01 Evr Motors Ltd Electric machine with core piece of multi-piece teeth extending from an annular ring
US11594920B2 (en) 2020-09-21 2023-02-28 Evr Motors Ltd Electric machine with liquid-cooled stator core
US11831202B2 (en) 2020-09-21 2023-11-28 Evr Motors Ltd Electric machine with multi-part trapezoidal teeth
US12081073B2 (en) 2021-10-04 2024-09-03 Evr Motors Ltd Electric machine with multi-tapered yokes
US12046949B1 (en) 2023-12-28 2024-07-23 Evr Motors Ltd Electric machine with coils bridged with toothed clips

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8122 Nonbinding interest in granting licenses declared
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