EP2569850A2 - Machine électrique rotative - Google Patents

Machine électrique rotative

Info

Publication number
EP2569850A2
EP2569850A2 EP11719517A EP11719517A EP2569850A2 EP 2569850 A2 EP2569850 A2 EP 2569850A2 EP 11719517 A EP11719517 A EP 11719517A EP 11719517 A EP11719517 A EP 11719517A EP 2569850 A2 EP2569850 A2 EP 2569850A2
Authority
EP
European Patent Office
Prior art keywords
sheet metal
electric machine
machine according
rotary electric
metal segments
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Withdrawn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
EP11719517A
Other languages
German (de)
English (en)
Inventor
Ricardo Naoki Okai
Serdar Cifyildiz
Hanspeter Walser
Josef Schwanda
Alexander Schwery
Gustavo Rodriguez Rios
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 EP2569850A2 publication Critical patent/EP2569850A2/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Withdrawn legal-status Critical Current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
    • H02K1/26—Rotor cores with slots for windings

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 housed in a laminated stator core and protrudes at the ends in the form of a Statorwickelkopfes from the stator lamination body.
  • the rotor comprises a central body with a shaft, at the end of which slip rings for current transmission are arranged.
  • 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.
  • 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 is carried out by means of a plurality of bolts which extend in the axial direction through the rotor lamination body and the Hilfsrim.
  • Rotor sheet body or Rim is provided for distributing the pressure of a press plate.
  • Essential for the invention is that means for positively connecting the adjacent sheet metal segments are provided for transmitting tangential forces between lying in a plane, adjacent sheet metal segments. Due to the positive connection between adjacent sheet segments tangential forces can be passed from sheet metal segment to sheet metal segment, resulting in a more even force distribution.
  • Sheet metal segments comprise at least one recess on one terminal side of each sheet metal segment and at least one complementary to this recess claw on the other terminal side of the sheet metal segment.
  • the claw has a hammerhead-like or
  • each one is on the terminal sides
  • Sheet metal segment a plurality of recesses or claws in the radial direction arranged one behind the other.
  • the recesses and claws are offset from plane to plane of the laminated core.
  • the sheet metal segments are arranged inside the laminated core stacked.
  • Another embodiment is characterized in that the sheet metal segments in the region near the axis have holes for the passage of the bolts, that the sheet metal segments are equipped at the outer edge with teeth for receiving the rotor winding, and that the means for the positive connection of the
  • Sheet metal segments are arranged in the area between the teeth and the holes.
  • the single FIGURE shows a sheet metal segment for the rotor laminated body of an electrical machine with positive connection means according to an embodiment of the invention.
  • a sheet metal segment 27 is shown, which according to an embodiment of the invention with means for producing a
  • these means comprise one
  • Connection side of the sheet metal segment 27 (left in the figure) has a recess 29 in the sheet with a hammerhead-like (or dovetail-like) edge contour, to which on the other terminal side of the sheet segment 27 (right in the figure) an outwardly projecting, complementary formed hammerhead-like (or dovetail-like) claw 30 is formed.
  • the combination described has the advantage that the bolts are relieved, as a substantial part of the tangential load is now also taken over by the additional connection (claw / recess), the power transmission is thus moved further into the off-axis region of the sheet segments and thus better overall is distributed.
  • this positive connection also counteracts the mechanical expansion of the sheet metal body.

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 formé d'un paquet de tôles empilées constitué par une pluralité de segments de tôle (27) partiellement circulaires, serrés par des boulons qui traversent le corps en tôle du rotor dans le sens axial. L'invention vise à perfectionner une machine de ce type. A cet effet, des moyens (29, 30) sont prévus pour relier par complémentarité de forme des segments de tôle (27) voisins pour permettre le transfert de forces tangentielles entre des segments de tôle (27) voisins disposés sur un même plan.
EP11719517A 2010-05-10 2011-05-09 Machine électrique rotative Withdrawn EP2569850A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010019816 2010-05-10
PCT/EP2011/057397 WO2011141412A2 (fr) 2010-05-10 2011-05-09 Machine électrique rotative

Publications (1)

Publication Number Publication Date
EP2569850A2 true EP2569850A2 (fr) 2013-03-20

Family

ID=44626362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11719517A Withdrawn EP2569850A2 (fr) 2010-05-10 2011-05-09 Machine électrique rotative

Country Status (2)

Country Link
EP (1) EP2569850A2 (fr)
WO (1) WO2011141412A2 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003073583A1 (fr) * 2002-02-28 2003-09-04 Abb Research Ltd. Generateur synchrone

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011141412A2 *

Also Published As

Publication number Publication date
WO2011141412A2 (fr) 2011-11-17
WO2011141412A3 (fr) 2012-12-20

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