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WO2004057730A1 - Electrical machine - Google Patents

Electrical machine Download PDF

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Publication number
WO2004057730A1
WO2004057730A1 PCT/DE2003/004006 DE0304006W WO2004057730A1 WO 2004057730 A1 WO2004057730 A1 WO 2004057730A1 DE 0304006 W DE0304006 W DE 0304006W WO 2004057730 A1 WO2004057730 A1 WO 2004057730A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrical machine
electrical
stranded conductor
winding system
terminal box
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.)
Ceased
Application number
PCT/DE2003/004006
Other languages
German (de)
French (fr)
Inventor
Gerhard Dressel
Wilhelm Schmidtpeter
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2004057730A1 publication Critical patent/WO2004057730A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements

Definitions

  • the invention relates to an electrical machine with at least one stand which has a winding system, the electrical supply of this winding system being effected via a terminal box of the electrical machine and an electrical line via a connection point to the winding system.
  • the invention is therefore based on the object of optimizing the installation space of a machine and at the same time reducing the assembly effort, in particular in the case of such electrical connections.
  • the problem is solved in that at least the electrical supply line between the terminal box and the connection point takes place via an at least sectionally insulated stranded conductor.
  • a stranded wire consists of individual filaments, which are stranded, twisted, parallel or choke the stranded wire form.
  • the filaments can be laid bare within the stranded conductor, but they can also already have an artificial insulation layer. Even without an artificially applied insulation layer, there is a natural insulation layer on the surface of the filaments in the form of a minimal oxide layer. This means that they have minimal insulation, so that the current inside the stranded conductor is evened out.
  • the stranded wire itself has an insulation layer, at least in sections, in order to be guided close to earthed components of the electrical machine between the terminal box and the connection point on the winding system, without flashovers occurring. Due to its inherent flexibility, the stranded conductor can also be easily and gently laid during installation. In extreme cases, vibrations of the electrical machine do not lead to a broken line. An electrical supply via the stranded wire to the winding system of the electrical machine is therefore possible even under difficult operating conditions.
  • the winding system is also made up of stranded conductors. This means that the switching end of the winding system can be used directly without connection points, e.g. Solder points or clamp connections are led into the terminal box. This eliminates the need for additional solder connections. This leads to a further simplification of assembly.
  • Such an electrical machine is therefore particularly insensitive to the effects of shocks and vibrations, especially with regard to its winding system and its switching connection. occur with railway machines.
  • the stranded conductor between the terminal box and the connection point or the winding system can also be constructed from a plurality of parallel or twisted stranded conductors.
  • the stranded conductors can be manufactured in different cross-sections, but they can also preferably be shaped during assembly so that they can adapt to the given location. Stranded conductors that are embedded, for example, by extrusion in highly flexible materials for insulation are also adaptable.
  • the filaments of the stranded conductor do not consist of the same cross-sections, but have different cross-sections, so that different cross-sectional geometries such as round, triangular, square, polygonal etc. are combined.
  • the density of the filaments of a stranded conductor can thus be increased and its rigidity or flexibility can also be influenced.
  • Compact electrical machines are understood to mean, in particular, railway machines which derive high performance from a relatively small installation volume.
  • FIG. 1 shows the laying of a stranded wire as an electrical connection line within the electrical machine.
  • FIG. 1 shows part of a longitudinal section of a schematically illustrated electrical machine 1, in which a terminal box 2 is located on a housing 3 of the electrical machine 1.
  • a terminal box 2 In this terminal box 2, the supply lines 10 from the terminal box to the connection point 7 are shown in an interconnector via an insulator 5.
  • the switching connection is in the axial extension of the winding head 6, the is in turn located on the end faces of a laminated core 11, shown in principle, of a stator, not shown, of the electrical machine 1.
  • the bushings 13 in the housing 3 can be greatly reduced in terms of their diameter and thus adapted to the diameter of the stranded conductor 10. Due to the advantageous flexibility, i.e. Formability of the stranded conductor 10, the stranded conductor 10 can be adapted in cross section, in particular in the area of the leadthrough 13. Due to the flexibility and deformability of the stranded conductor 10, the end shield 4 can also be optimized accordingly and construction volume can thus be saved.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

The aim of the invention is to simplify the mounting of the supply lead from a terminal box (2) of an electrical machine (1) and to reduce the overall volume. To this end, at least one bunched conductor (10) is used as the electrical supply lead.

Description

Beschreibungdescription

Elektrische MaschineElectrical machine

Die Erfindung betrifft eine elektrische Maschine mit zumindest einem Ständer, der ein Wicklungssystem aufweist, wobei die elektrische Versorgung dieses Wicklungssystems über einen Klemmkasten der elektrischen Maschine und eine elektrische Leitung über einen Anschlusspunkt an das Wicklungssystem er- folgt.The invention relates to an electrical machine with at least one stand which has a winding system, the electrical supply of this winding system being effected via a terminal box of the electrical machine and an electrical line via a connection point to the winding system.

Um eine elektrische Versorgung eines Wicklungssystems einer elektrischen Maschine mit dem Klemmenkasten zu verbinden, werden aufgrund der notwendigen Stromstärken, insbesondere Flachkupferschaltschienen, verwendet. Diese Flachkupfer- schaltschienen müssen an die gegebenen Formen und die Platzverhältnisse individuell angepasst werden. Anschließend sind dieses z.T. sehr verwinkelten Formen über Durchführungskanäle einzufädeln und mit dem Schaltende des Wicklungssystems bzw. Schaltringen zu verlöten.In order to connect an electrical supply of a winding system of an electrical machine to the terminal box, due to the necessary current strengths, in particular flat copper switching rails, are used. These flat copper switch rails must be individually adapted to the given shapes and the space available. Then some of these are to thread very angled shapes through feed-through channels and to solder them to the switching end of the winding system or switching rings.

Die Verwendung der Flachkupferschaltschienen bedarf eines erhöhten Montageaufwand und eines vergrößerten Bauvolumens der elektrischen Maschine.The use of the flat copper switching rails requires increased assembly effort and an increased construction volume of the electrical machine.

Der Erfindung liegt demnach die Aufgabe zugrunde, dem Bauraum einer Maschine zu optimieren und gleichzeitig den Montageaufwand, insbesondere bei derartigen elektrischen Anschlüssen zu verringern.The invention is therefore based on the object of optimizing the installation space of a machine and at the same time reducing the assembly effort, in particular in the case of such electrical connections.

Die Lösung der gestellten Aufgabe gelingt dadurch, dass zumindest die elektrische Zuleitung zwischen Klemmkasten und Anschlusspunkt über einen wenigstens abschnittsweise isolierten Litzenleiter erfolgt.The problem is solved in that at least the electrical supply line between the terminal box and the connection point takes place via an at least sectionally insulated stranded conductor.

Ein Litzenleiter besteht dabei aus einzelnen Filamenten, die verseilt, verdrillt, parallel oder verwürgt den Litzenleiter bilden. Die Filamente können blank innerhalb des Litzenleiters verlegt sein, sie können aber auch bereits eine künstliche Isolationsschicht aufweisen. Auch ohne eine künstlich aufgebrachte Isolationsschicht befindet sich in Form einer minimalen Oxidschicht eine natürliche Isolationsschicht auf der Oberfläche der Filamente. Damit verfügen sie über eine minimale Isolierung, so dass sich der Strom innerhalb des Litzenleiters vergleichmäßigt.A stranded wire consists of individual filaments, which are stranded, twisted, parallel or choke the stranded wire form. The filaments can be laid bare within the stranded conductor, but they can also already have an artificial insulation layer. Even without an artificially applied insulation layer, there is a natural insulation layer on the surface of the filaments in the form of a minimal oxide layer. This means that they have minimal insulation, so that the current inside the stranded conductor is evened out.

Der Litzenleiter selbst weist wenigstens abschnittsweise eine Isolationsschicht auf, um zwischen dem Klemmkasten und dem Anschlusspunkt am Wicklungssystem auch an geerdeten Komponenten der elektrischen Maschine nahe vorbeigeführt zu werden, ohne dass Überschläge auftreten. Durch seine im anhaftende Flexibilität kann der Litzenleiter während der Montage sehr einfach auch verschlungen verlegt werden. Erschütterungen der elektrischen Maschine führen damit im Extremfall nicht zum Zuleitungsbruch. Eine elektrische Versorgung über den Litzenleiter an das Wicklungssystem der elektrischen Maschine ist damit auch bei schwierigen Einsatzbedingungen möglich.The stranded wire itself has an insulation layer, at least in sections, in order to be guided close to earthed components of the electrical machine between the terminal box and the connection point on the winding system, without flashovers occurring. Due to its inherent flexibility, the stranded conductor can also be easily and gently laid during installation. In extreme cases, vibrations of the electrical machine do not lead to a broken line. An electrical supply via the stranded wire to the winding system of the electrical machine is therefore possible even under difficult operating conditions.

Besonders vorteilhaft ist es, wenn das Wicklungssystem ebenso aus Litzenleitern aufgebaut ist. Damit kann das Schaltende des Wicklungssystems direkt ohne Anschlusspunkte , z.B. Löt- stellen oder Klemmverbindungen in den Klemmenkasten geführt werden. Zusätzliche Lötverbindungen entfallen damit. Dies führt zu einer weiteren Montagevereinfachung. Eine derartige elektrische Maschine ist deshalb vor allem bzgl. ihres Wicklungssystems und ihrer Schaltverbindung besonders unempfind- lieh gegen Schock- und Rütteleinwirkungen, wie sie u.a. bei Bahnmaschinen auftreten.It is particularly advantageous if the winding system is also made up of stranded conductors. This means that the switching end of the winding system can be used directly without connection points, e.g. Solder points or clamp connections are led into the terminal box. This eliminates the need for additional solder connections. This leads to a further simplification of assembly. Such an electrical machine is therefore particularly insensitive to the effects of shocks and vibrations, especially with regard to its winding system and its switching connection. occur with railway machines.

Der Litzenleiter zwischen Klemmkasten und Anschlusspunkt bzw. das Wicklungssystem kann auch aus mehreren parallelen oder verdrillten Litzenleitern aufgebaut sein. Die Litzenleiter sind in verschiedenen Querschnitten herstellbar, sie sind aber auch vorzugsweise während der Montage formbar so dass sie sich den gegebenen Örtlichkeiten anpassen können. Ebenso anpassungsfähig sind Litzenleiter die bei- spielsweise durch Extrusion in hochflexible Massen zur Isolation eingebettet sind.The stranded conductor between the terminal box and the connection point or the winding system can also be constructed from a plurality of parallel or twisted stranded conductors. The stranded conductors can be manufactured in different cross-sections, but they can also preferably be shaped during assembly so that they can adapt to the given location. Stranded conductors that are embedded, for example, by extrusion in highly flexible materials for insulation are also adaptable.

Um die Flexibilität des Litzenleiters zu erhöhen, ist es vorteilhaft wenn die Filamente des Litzenleiters nicht aus glei- chen Querschnitten bestehen, sondern unterschiedliche Querschnitte aufweisen, so dass verschiedene Querschnittsgeometrien wie z.B. rund, dreieckig, quadratisch, mehreckig etc. kombiniert sind. Damit kann die Dichte der Filamente eines Litzenleiters erhöht und auch dessen Steifigkeit bzw. Flexi- bilität beeinflusst werden.In order to increase the flexibility of the stranded conductor, it is advantageous if the filaments of the stranded conductor do not consist of the same cross-sections, but have different cross-sections, so that different cross-sectional geometries such as round, triangular, square, polygonal etc. are combined. The density of the filaments of a stranded conductor can thus be increased and its rigidity or flexibility can also be influenced.

Eine derartige Anwendung eines Litzenleiters ist insbesondere bei kompakten elektrischen Maschinen äußerst vorteilhaft. Als kompakte elektrische Maschinen werden dabei insbesondere Bahnmaschinen verstanden, die aus relativ kleinem Einbauvolu- men eine hohe Leistung entnehmen.Such an application of a stranded conductor is extremely advantageous in particular in the case of compact electrical machines. Compact electrical machines are understood to mean, in particular, railway machines which derive high performance from a relatively small installation volume.

Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß Merkmalen der Unteransprüche ist im folgenden anhand eines schematisch dargestellten Ausführungsbeispiels in der Zeichnung näher erläutert, darin zeigt:The invention and further advantageous refinements of the invention according to the features of the subclaims are explained in more detail below with reference to a schematically illustrated exemplary embodiment in the drawing, in which:

FIG 1 die Verlegung eines Litzenleiters als elektrische Anschlussleitung innerhalb der elektrischen Maschine.1 shows the laying of a stranded wire as an electrical connection line within the electrical machine.

FIG 1 zeigt einen Teil eines Längsschnitts einer schematisch dargestellten elektrischen Maschine 1, bei der sich an einem Gehäuse 3 der elektrischen Maschine 1 ein Klemmenkasten 2 befindet. In diesem Klemmkasten 2 sind über einen Isolator 5 die Zuleitungen 10 vom Klemmenkasten zum Anschlusspunkt 7, in einer Schaltverbindung, dargestellt. Die Schaltverbindung befindet sich in axialer Verlängerung des Wickelkopfes 6, der sich wiederum an den Stirnseiten eines prinzipiell dargestellten Blechpakets 11 eines nicht näher dargestellten Ständers der elektrischen Maschine 1 befindet.1 shows part of a longitudinal section of a schematically illustrated electrical machine 1, in which a terminal box 2 is located on a housing 3 of the electrical machine 1. In this terminal box 2, the supply lines 10 from the terminal box to the connection point 7 are shown in an interconnector via an insulator 5. The switching connection is in the axial extension of the winding head 6, the is in turn located on the end faces of a laminated core 11, shown in principle, of a stator, not shown, of the electrical machine 1.

Durch die erfindungsgemäße Ausgestaltung der elektrischen Zuleitung vom Klemmenkasten 2 zum Anschlusspunkt 7 können die Durchführungen 13 im Gehäuse 3 bezüglich ihres Durchmessers stark verringert und somit dem Durchmesser des Litzenleiters 10 angepasst werden. Durch die vorteilhafte Flexibilität, d.h. Formbarkeit des Litzenleiters 10, lässt sich der Litzenleiter 10, insbesondere im Bereich der Durchführung 13 im Querschnitt anpassen. Durch die Flexibilität und Verformbarkeit des Litzenleiters 10 kann außerdem das Lagerschild 4 dementsprechend optimiert werden und somit Bauvolumen einge- spart werden.Due to the inventive design of the electrical supply line from the terminal box 2 to the connection point 7, the bushings 13 in the housing 3 can be greatly reduced in terms of their diameter and thus adapted to the diameter of the stranded conductor 10. Due to the advantageous flexibility, i.e. Formability of the stranded conductor 10, the stranded conductor 10 can be adapted in cross section, in particular in the area of the leadthrough 13. Due to the flexibility and deformability of the stranded conductor 10, the end shield 4 can also be optimized accordingly and construction volume can thus be saved.

Um eine räumliche Fixierung des Litzenleiters innerhalb des Wicklungsraumes zu erhalten, können vorteilhafter Weise die Litzenleiter 10 durch ein Halteelement 12 auf dem Wickelkopf 6 abgestützt werden. In order to obtain a spatial fixation of the stranded conductor within the winding space, the stranded conductor 10 can advantageously be supported on the winding head 6 by a holding element 12.

Claims

Patentansprüche claims 1. Elektrische Maschine (1) mit zumindest einem Ständer, der ein Wicklungssystem aufweist, wobei die elektrische Versor- gung dieses Wicklungssystems über ein Klemmkasten (2) der e- lektrischen Maschine (1) und eine elektrische Zuleitung (10) über einen Anschlusspunkt (7) an das Wicklungssystem erfolgt, d a d u r c h g e k e n n z e i c h n e t , dass zumindest die elektrische Zuleitung zwischen Klemmkasten (2) und Anschlusspunkt (7) über einen wenigstens abschnittsweise isolierten Litzenleiter (10) erfolgt.1. Electrical machine (1) with at least one stand which has a winding system, the electrical supply of this winding system via a terminal box (2) of the electrical machine (1) and an electrical supply line (10) via a connection point ( 7) to the winding system, characterized in that at least the electrical supply between the terminal box (2) and the connection point (7) takes place via an at least partially insulated stranded conductor (10). 2. Elektrische Maschine (1) nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass der Litzenleiter (10) in sämtlichen Querschnittsformen herstellbar und/oder bei der Montage bzgl. seines Querschnitts formbar ist.2. Electrical machine (1) according to claim 1, so that the stranded conductor (10) can be produced in all cross-sectional shapes and / or can be shaped with respect to its cross-section during assembly. 3. Elektrische Maschine (1) nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass der Litzen- leiter (10) als Flachlitzenleiter ausführbar ist.3. Electrical machine (1) according to claim 1 or 2, so that the stranded conductor (10) can be implemented as a flat stranded conductor. 4. Anwendung einer elektrischen Maschine (1) nach einem oder mehrerer der vorhergehenden Ansprüche bei kompakten elektrischen Maschinen, insbesondere bei Bahnmaschinen. 4. Application of an electrical machine (1) according to one or more of the preceding claims in compact electrical machines, in particular in railway machines.
PCT/DE2003/004006 2002-12-20 2003-12-05 Electrical machine Ceased WO2004057730A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10260284.0 2002-12-20
DE2002160284 DE10260284A1 (en) 2002-12-20 2002-12-20 Electrical machine

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WO2004057730A1 true WO2004057730A1 (en) 2004-07-08

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PCT/DE2003/004006 Ceased WO2004057730A1 (en) 2002-12-20 2003-12-05 Electrical machine

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WO (1) WO2004057730A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725707A (en) * 1971-05-05 1973-04-03 Black & Decker Mfg Co Field sub-assembly for universal electric motors
DE2539122A1 (en) * 1974-09-06 1976-03-18 Gen Electric Connection for aluminium cables - consists of one-piece conductor and of second multicore conductor clamped together
US4590397A (en) * 1984-11-30 1986-05-20 Sundstrand Corporation Terminal block for dynamoelectric machine
JPH01321834A (en) * 1988-06-24 1989-12-27 Sanyo Electric Co Ltd Stator for rotary electric machine
EP0504469A1 (en) * 1991-03-22 1992-09-23 Siemens Aktiengesellschaft Electric contact connection
EP0555720A1 (en) * 1992-02-14 1993-08-18 Siemens Aktiengesellschaft Electric machine
EP0917276A1 (en) * 1997-11-18 1999-05-19 ATB Austria Antriebstechnik Aktiengesellschaft Casing for an electric motor
EP1115190A1 (en) * 1999-07-15 2001-07-11 Moriyama Manufacturing Co., Ltd. Rotating electric machine
WO2002011268A1 (en) * 2000-08-02 2002-02-07 Von Roll Isola Winding Systems Gmbh Windings for electrical machines with conductors consisting of litz wires

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615419C2 (en) * 1976-04-09 1985-05-23 Papst-Motoren GmbH & Co KG, 7742 St Georgen Arrangement for fixing winding heads
DE19914942A1 (en) * 1999-04-01 2000-10-12 Daimler Chrysler Ag Production method for producing stator winding has rotor with poles fastened to the shaft/wave while the stator is fastened coaxial within the housing and conductors arranged at the ends of the poles

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725707A (en) * 1971-05-05 1973-04-03 Black & Decker Mfg Co Field sub-assembly for universal electric motors
DE2539122A1 (en) * 1974-09-06 1976-03-18 Gen Electric Connection for aluminium cables - consists of one-piece conductor and of second multicore conductor clamped together
US4590397A (en) * 1984-11-30 1986-05-20 Sundstrand Corporation Terminal block for dynamoelectric machine
JPH01321834A (en) * 1988-06-24 1989-12-27 Sanyo Electric Co Ltd Stator for rotary electric machine
EP0504469A1 (en) * 1991-03-22 1992-09-23 Siemens Aktiengesellschaft Electric contact connection
EP0555720A1 (en) * 1992-02-14 1993-08-18 Siemens Aktiengesellschaft Electric machine
EP0917276A1 (en) * 1997-11-18 1999-05-19 ATB Austria Antriebstechnik Aktiengesellschaft Casing for an electric motor
EP1115190A1 (en) * 1999-07-15 2001-07-11 Moriyama Manufacturing Co., Ltd. Rotating electric machine
WO2002011268A1 (en) * 2000-08-02 2002-02-07 Von Roll Isola Winding Systems Gmbh Windings for electrical machines with conductors consisting of litz wires

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 133 (E - 0902) 13 March 1990 (1990-03-13) *

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