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WO2014063673A2 - Générateur électrique pour la production de courant dans des centrales - Google Patents

Générateur électrique pour la production de courant dans des centrales Download PDF

Info

Publication number
WO2014063673A2
WO2014063673A2 PCT/DE2013/000599 DE2013000599W WO2014063673A2 WO 2014063673 A2 WO2014063673 A2 WO 2014063673A2 DE 2013000599 W DE2013000599 W DE 2013000599W WO 2014063673 A2 WO2014063673 A2 WO 2014063673A2
Authority
WO
WIPO (PCT)
Prior art keywords
conductors
conductor
electric generator
windings
turns
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/DE2013/000599
Other languages
German (de)
English (en)
Other versions
WO2014063673A3 (fr
Inventor
Stefan VOSSKÜHLER
Thorsten Wasmuth
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.)
Sensoplan GmbH
Original Assignee
Sensoplan GmbH
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 Sensoplan GmbH filed Critical Sensoplan GmbH
Priority to EP13801980.7A priority Critical patent/EP2912756A2/fr
Priority to AU2013337129A priority patent/AU2013337129B2/en
Publication of WO2014063673A2 publication Critical patent/WO2014063673A2/fr
Publication of WO2014063673A3 publication Critical patent/WO2014063673A3/fr
Anticipated expiration legal-status Critical
Priority to ZA2015/03634A priority patent/ZA201503634B/en
Ceased legal-status Critical Current

Links

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
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • 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
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/22—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
    • 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
    • H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors

Definitions

  • Electric generators for power generation in power plants have a rotor.
  • This rotor initially has a shaft. On this shaft, the two poles of the rotor are arranged. These each have a winding of several coils, each coil in turn consists of several turns. These windings are formed by electrical conductors made of copper, which are embedded in grooves. The conductors between the two winding heads extend parallel to the shaft. In addition to these axial conductors, there are also the ends of the circular, curved, tangential conductors, in which the axis of the shaft defines the center of the circle.
  • the excitation winding of generator rotors is cooled with air or hydrogen to dissipate the heat generated by the excitation current loss heat and to avoid overheating of the insulation components.
  • air or hydrogen there are 3 important cooling principles, which are usually used (the following sequence corresponds to the increasing effectiveness of the cooling and thus the achievable power densities of the generator):
  • Variant 1 is an indirect cooling by passing the cooling gas past the narrow sides of the conductors of the winding.
  • Variant 2 is direct cooling with flow of the cooling gas across the conductor through corresponding radial bores.
  • Variant 3 is also a direct cooling with flow of the cooling gas along the conductor.
  • full copper profiles are used for the conductors of the windings.
  • the conductors are additionally provided with radial bores for flowing through the cooling gas.
  • mostly single or double hollow profiles are used.
  • rotor windings are cooled either according to variant 1 or according to variant 2 or according to a combination of variants 1 and 2.
  • the rotor winding is cooled according to variant 3. This allows the use of only one profile type (Volloder waveguide) and thus a minimum number of solder joints in the winding, since no different profile types must be connected together. A minimal number of solder joints is advantageous because solder joints are a mechanical weak point.
  • the invention is based on the invention to provide an electric generator for power generation in power plants, in which at a maximum cooling capacity, the conductors of the turns have as few solder joints as possible.
  • the generator according to the invention thus has a generator rotor winding, which can be cooled in accordance with the above-described variants 1 and / or 2 in combination with variant 3.
  • the windings are formed as half-turns, as stated, the number of solder joints per turn can be reduced to 2 solder joints. These two solder joints can be placed in a position with low load.
  • the ends of the two half-turns or the two half-conductors are soldered together. This method of mechanical and electrical connection has proven itself.
  • the two half-turns are C-shaped.
  • the interface with their solder joints lies between the two C-shaped half-turns in the longitudinal center plane of the rotor, d. H. on the apex of the circular tangential ladder.
  • solder joints it is conceivable to place the solder joints to other positions.
  • the conductors of the windings in the transverse direction extending cooling channels This concerns the axial conductors in which the cooling channels extend in bores with respect to the radial direction as bores. This passage of the cooling gas across the conductor in these axial conductor sections provides optimum cooling performance. In addition, the holes for flowing through the cooling gas are easy to introduce into the ladder.
  • the development according to claim 5 proposes a possibility for the direct cooling with flow through the cooling gas along through the conductor. These cooling channels are intended for the circular tangential conductor.
  • a preferred constructive solution for this suggests the development according to claim 6.
  • the basic idea is that it is assumed that a solid profile for the conductor.
  • initially open channels are milled, for example in U-shape.
  • one or more of these channels can be provided.
  • These channels are closed by applying a so-called intermediate insulation on the conductors at the top, so that thereby a cooling gas flow is realized longitudinally through the conductor.
  • This is similar to the previous waveguide.
  • a running in the longitudinal direction of the conductor cooling channel is created in a technically very simple manner, without having to use a special hollow profile. Because the cooling channels are created by milling out of the flat top of the ladder.
  • Claim 7 proposes as a further technical solution a method for producing a conductor for the rotor of an electric generator for power generation in power plants.
  • the core idea is that it is assumed that a conductor full profile, which has the same cross-sectional profile in the initial state over the entire length. It is thus assumed that a solid profile with the length of half a turn and with the cross-sectional dimensions of the largest necessary profile cross-section for the head. This is the wider profile of the previously commonly used profile (usually the hollow profile).
  • the solid profile according to the invention is correspondingly reduced in the area in which a narrower profile is required (the earlier narrower profile) by machining in the width. There is thus an adaptation to the desired profile or cross-sectional profile by removing material.
  • the conductor is now transformed by suitable methods into a 90 ° bend.
  • the cooling according to the above-described variant 3 in the region of the tangential conductor is - as stated - realized by milling one or more, open at the top channels along the Volleiters.
  • overall a tangential conductor is created, more or less in the manner of a waveguide, which starts from a standard conductor full profile.
  • Claim 8 proposes, as a further technical solution, a method for refurbishing the conductors for the rotor of an electric generator for generating electricity in power plants.
  • FIG. 2 shows a detail of the end region of the generator in FIG.
  • FIG. 3a is a side view of a half-conductor of the half-turn;
  • Fig. 3b is a plan view of the half-conductor of the half-turn in Fig.
  • Fig. 4a is a perspective view of the winding consisting of two half-turns before the brazing of these half-turns;
  • Fig. 4b shows the situation in Fig. 4a after the brazing of the two
  • Fig. 5 is a schematic sectional view through the winding.
  • the electric generator for power generation in power plants has a shaft 1 with rotor 2 located thereon.
  • This rotor 2 is formed by a field winding 3, which define the two poles.
  • the excitation winding 3 consists of several turns 4, these turns 4 each consist of several electrical conductors 5.
  • the conductors 5 of the windings 4 are designed as C-shaped half-conductors 5 '(FIGS. 3a and 3b). These two half conductors 5 'are joined together to form the overall conductor 5 and are connected to each other at the end via a solder joint 6.
  • the interface between the two half-conductors 5 'of the conductor 5 lies on the longitudinal center plane of the shaft 1. The interface can also be elsewhere.
  • the half-conductors 5 ' form in their entirety the half turns 4', which are then connected to the full turn 4.
  • the special feature is the formation of the conductor 5 or half-conductor 5 'for the windings 4:
  • the half-conductors 5 ' have cooling channels 7 in the straight axial region. These are introduced through slot-like holes in the material.
  • a second type of cooling channels 8 is provided in the arcuate tangential region of the semiconductors 5 '.
  • the basic principle here is that in the upper-side flat side of the half-conductor 5 'channels are milled, for example, in a U-shape. This can be a or more of these channels may be provided.
  • these cooling channels 8 are realized in such a way that the flat sides of the conductors 5 are stacked with the interposition of a flat insulator 9. However, this means that the milled-in channels are closed at the top by the interposed insulator 9, so that a cooling gas flow is realized longitudinally through the conductor 5 in the form of a cooling channel 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Current Collectors (AREA)
  • Synchronous Machinery (AREA)

Abstract

Un générateur électrique destiné à la production de courant dans des centrales, présente un enroulement d'excitation (3) disposé sur un arbre (1). Les spires (4) de l'enroulement d'excitation (3) sont formées respectivement de deux demi-spires (4') qui sont soudées entre elles à leurs deux extrémités.
PCT/DE2013/000599 2012-10-26 2013-10-15 Générateur électrique pour la production de courant dans des centrales Ceased WO2014063673A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP13801980.7A EP2912756A2 (fr) 2012-10-26 2013-10-15 Générateur électrique pour la production de courant dans des centrales
AU2013337129A AU2013337129B2 (en) 2012-10-26 2013-10-15 Electric generator for producing electricity in power plants
ZA2015/03634A ZA201503634B (en) 2012-10-26 2015-05-22 Electric generator for producing electricity in power plants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012021114.7 2012-10-26
DE102012021114.7A DE102012021114B4 (de) 2012-10-26 2012-10-26 Elektrischer Generator für die Stromgewinnung in Kraftwerken

Publications (2)

Publication Number Publication Date
WO2014063673A2 true WO2014063673A2 (fr) 2014-05-01
WO2014063673A3 WO2014063673A3 (fr) 2015-03-12

Family

ID=49724927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2013/000599 Ceased WO2014063673A2 (fr) 2012-10-26 2013-10-15 Générateur électrique pour la production de courant dans des centrales

Country Status (5)

Country Link
EP (1) EP2912756A2 (fr)
AU (1) AU2013337129B2 (fr)
DE (1) DE102012021114B4 (fr)
WO (1) WO2014063673A2 (fr)
ZA (1) ZA201503634B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108880043A (zh) * 2017-05-08 2018-11-23 奥迪股份公司 电机以及用于制造电机的方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3160831A1 (fr) * 2024-03-26 2025-10-03 Nidec Psa Emotors Conducteur électrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH328218A (de) * 1954-01-19 1958-02-28 Vickers Electrical Co Ltd Dynamoelektrische Maschine
US3075104A (en) * 1960-04-22 1963-01-22 Gen Electric Liquid-cooled rotor for a dynamoelectric machine
US3098941A (en) * 1960-10-27 1963-07-23 Gen Electric Dynamoelectric machine winding with edge-standing fluid-cooled conductors
EP0894358B1 (fr) * 1996-04-17 1999-11-24 Siemens Aktiengesellschaft Enroulement de rotor pour machine electrique
DE102009042706A1 (de) * 2009-09-24 2011-04-07 Sensoplan Aktiengesellschaft Sanierverfahren für die Leiter eines Rotors eines elektrischen Generators

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108880043A (zh) * 2017-05-08 2018-11-23 奥迪股份公司 电机以及用于制造电机的方法
US10892660B2 (en) 2017-05-08 2021-01-12 Audi Ag Electrical machine and method for manufacturing an electrical machine
CN108880043B (zh) * 2017-05-08 2021-06-08 奥迪股份公司 电机以及用于制造电机的方法

Also Published As

Publication number Publication date
ZA201503634B (en) 2016-11-30
AU2013337129B2 (en) 2017-09-14
EP2912756A2 (fr) 2015-09-02
DE102012021114B4 (de) 2017-03-09
AU2013337129A1 (en) 2015-05-07
DE102012021114A1 (de) 2014-04-30
WO2014063673A3 (fr) 2015-03-12

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