EP2569852A2 - Machine électrique rotative - Google Patents

Machine électrique rotative

Info

Publication number
EP2569852A2
EP2569852A2 EP11719244A EP11719244A EP2569852A2 EP 2569852 A2 EP2569852 A2 EP 2569852A2 EP 11719244 A EP11719244 A EP 11719244A EP 11719244 A EP11719244 A EP 11719244A EP 2569852 A2 EP2569852 A2 EP 2569852A2
Authority
EP
European Patent Office
Prior art keywords
rotor
grooves
electric machine
rotary electric
sheet metal
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Withdrawn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
EP11719244A
Other languages
German (de)
English (en)
Inventor
Ricardo Naoki Okai
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.)
GE Renewable Technologies Wind BV
Original Assignee
Alstom Hydro France SAS
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 Alstom Hydro France SAS filed Critical Alstom Hydro France SAS
Publication of EP2569852A2 publication Critical patent/EP2569852A2/fr
Withdrawn legal-status Critical Current

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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/26—Rotor cores with slots for windings
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders

Definitions

  • the present invention relates to the field of electric machines. It relates to a rotary electric machine according to the preamble of claim 1.
  • Double-fed asynchronous machines are well known. They have a structure that can be exemplified as follows.
  • the rotating electrical machine or asynchronous machine comprises a rotatable about an axis rotor which is concentrically surrounded by a stator.
  • the stator has a stator winding, which is accommodated in a laminated stator core and protrudes from the stator laminated body at the ends in the form of a stator winding head.
  • the rotor comprises a central body with a shaft, at the end of which slip rings for current transmission are arranged. Around the central body extends a rotor body which carries a rotor winding which emerges from the rotor body at the ends in the form of a rotor winding head. The rotor winding must be secured against the occurring centrifugal forces.
  • Rotor laminated core of the rotor plate body serves to absorb these forces and at the same time defines the path of the magnetic flux.
  • a Hilfsrim 24 is arranged at the ends of the rotor body.
  • the Hilfsrim as well as the rotor laminated body consist of layered sheets, which are pressed in the axial direction to a composite. The pressing takes place by means of a plurality of bolts extending in the axial direction through the
  • Rotor sheet body or Rim is provided for distributing the pressure of a press plate.
  • the rotor body and the central body of the rotor are independent components that must be engaged to transmit torques. It is known from the document US Pat. No. 4,942,324 (see FIG. 1 there) to provide wedges (26) for coupling between the rim (24) and the hub (9) which engage corresponding cut grooves on the inner circumference of the rim (24) , This known type of connection is shown in the single figure of the present application in the right half for the sheet segment 27 ', where the grooves 29' are arranged for engagement between the rim and the central body on the inner circumference of the sheet metal segment 27 '.
  • the radial height of the cams is equal to the groove depth of the grooves.
  • Sheet metal segments formed As a preferred method, punching or shaping by means of laser are to be mentioned here in particular.
  • Sheet metal segments of the rotor core stack offset from each other.
  • FIGURE shows a sheet segment for the rotor body of a sheet metal
  • Asynchronous machine with positive connection means according to an embodiment of the invention.
  • Embodiment for the solution according to the invention (left half of the figure).
  • the grooves 29 can move more inward to the center of the rotor 1 1, as can be seen from the left half of the figure.
  • This measure according to the invention makes it possible to enlarge the yoke, because the holes or holes 28 can be offset for the shear pin also inward, without the inner or outer radius of the sheet respectively. Change rotor. In this way, the power transmission from
  • the grooves 29 may have a rectangular, approximately rectangular, a trapezoidal or any other cross-sectional shape in a conventional manner.
  • the sheet segments 27 are blanked. That is, from sheet to sheet the sheet segments 27 are offset from each other. This measure serves to increase the mechanical integrity of the

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'invention concerne une machine électrique rotative, notamment une machine asynchrone à double alimentation dans la plage de puissance de 20 MVA - 500 MVA, comportant un rotor qui tourne autour d'un axe, est entouré de manière concentrique par un stator et comprend un corps en tôle cylindrique creux, formé d'un paquet de tôles empilées constitué par une pluralité de segments de tôle (27) partiellement circulaires, qui sont soumis à l'action d'une plaque de pression pour la répartition de la pression et qui sont serrés par des boulons traversant le corps en tôle du rotor dans le sens axial, le paquet de tôles s'engrenant par des gorges (29), qui s'étendent dans l'axe et sont façonnées sur le rayon interne (31) du corps en tôle du rotor (15), pour transmettre le couple à un corps central concentrique du rotor. L'invention vise à créer, sur une machine de ce type, un accouplement mécanique qui ne présente pas d'inconvénient pour le refroidissement. A cet effet, les gorges (29) sont formées par des ergots (30) disposés par paires sur le rayon interne (31) des segments de tôle (27), espacés les uns des autres de la largeur d'une gorge et orientés radialement vers l'intérieur.
EP11719244A 2010-05-10 2011-05-09 Machine électrique rotative Withdrawn EP2569852A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019818 2010-05-10
PCT/EP2011/057443 WO2011141435A2 (fr) 2010-05-10 2011-05-09 Machine électrique rotative

Publications (1)

Publication Number Publication Date
EP2569852A2 true EP2569852A2 (fr) 2013-03-20

Family

ID=44626328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11719244A Withdrawn EP2569852A2 (fr) 2010-05-10 2011-05-09 Machine électrique rotative

Country Status (10)

Country Link
US (1) US20130062991A1 (fr)
EP (1) EP2569852A2 (fr)
JP (1) JP2013526822A (fr)
CN (1) CN103026589A (fr)
CA (1) CA2799033A1 (fr)
DE (1) DE202011110583U1 (fr)
ES (1) ES1126730Y (fr)
PT (1) PT11073T (fr)
RU (1) RU2012152937A (fr)
WO (1) WO2011141435A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9252637B2 (en) * 2013-04-25 2016-02-02 GM Global Technology Operations LLC Coil retainer for electric machine rotors
EP3048703B1 (fr) * 2015-01-20 2021-10-06 GE Energy Power Conversion Technology Ltd Masse magnétique pour rotor, rotor, machine électrique et procédé de fabrication de cette masse
DE102016210993A1 (de) * 2016-06-20 2017-12-21 Continental Automotive Gmbh Rotor für eine elektrische Asynchronmaschine mit angegossenem Käfigläufer, elektrische Maschine und Herstellungsverfahren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073604B (de) * 1960-01-21 Siemens-Schuckertwerke Aktiengesellschaft, Berlin Und Erlangen Verfahren zum Paketieren der Läuferbleche einer elektrischen Maschine in Schichtbauart
JPH0757076B2 (ja) 1988-05-30 1995-06-14 三菱電機株式会社 回転電機の回転子
JP2776905B2 (ja) * 1989-08-16 1998-07-16 株式会社日立製作所 可変速発電機
US8035273B2 (en) * 2005-12-08 2011-10-11 A.O. Smith Corporation Rotor assembly having two core portions each with a reduced back portion

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011141435A2 *

Also Published As

Publication number Publication date
CA2799033A1 (fr) 2011-11-17
PT11073T (pt) 2015-03-23
CN103026589A (zh) 2013-04-03
JP2013526822A (ja) 2013-06-24
ES1126730Y (es) 2015-01-20
RU2012152937A (ru) 2014-06-20
US20130062991A1 (en) 2013-03-14
DE202011110583U1 (de) 2014-10-27
WO2011141435A2 (fr) 2011-11-17
WO2011141435A3 (fr) 2012-11-22
ES1126730U (es) 2014-10-07

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Owner name: ALSTOM RENEWABLE TECHNOLOGIES

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