EP0012739B1 - Bobine d'inductance - Google Patents

Bobine d'inductance Download PDF

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Publication number
EP0012739B1
EP0012739B1 EP79890057A EP79890057A EP0012739B1 EP 0012739 B1 EP0012739 B1 EP 0012739B1 EP 79890057 A EP79890057 A EP 79890057A EP 79890057 A EP79890057 A EP 79890057A EP 0012739 B1 EP0012739 B1 EP 0012739B1
Authority
EP
European Patent Office
Prior art keywords
yokes
core columns
intermediate layers
magnetic
section
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.)
Expired
Application number
EP79890057A
Other languages
German (de)
English (en)
Other versions
EP0012739A1 (fr
Inventor
Gustav Dr. Preininger
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.)
Andritz Hydro GmbH Austria
Original Assignee
Andritz Hydro GmbH Austria
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 Andritz Hydro GmbH Austria filed Critical Andritz Hydro GmbH Austria
Publication of EP0012739A1 publication Critical patent/EP0012739A1/fr
Application granted granted Critical
Publication of EP0012739B1 publication Critical patent/EP0012739B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets

Definitions

  • the invention relates to a choke coil, the core columns of which consist of individual, radially laminated packages separated from one another by non-magnetic spacing and which are connected with a rectangular or step-shaped cross section, the core columns and the yokes having cylindrical, aligned recesses for receiving central tension bolts.
  • the core columns consist of individual radially laminated packages and non-magnetic spacings in between.
  • three core columns usually lying in one plane, are closed off by a lower and an upper yoke, which in the simplest case has a rectangular cross section.
  • Both the core columns and the yokes have cylindrical recesses that serve to receive central tension bolts, with the help of which the entire structure is pressed and held. These recesses create a zone in the yoke in which the magnetic paths are interrupted by the recesses for the tension bolts.
  • a known remedy is e.g. B. the installation of transverse yokes over which the river is led from the median strip into the peripheral zones.
  • the object of the invention is therefore to provide a choke coil in which the above disadvantages are avoided and which is still simple and economical in construction and in manufacture.
  • the choke coil according to the invention is characterized in that the packets of the core columns adjacent to the yokes have wedge-shaped cross-sections widening in cross-section and the yokes have rectangular non-magnetic intermediate layers in cross-section, and that these intermediate layers are arranged in the central region interrupted by the recesses.
  • the invention makes it possible for the first time to produce a choke coil of the type mentioned in the introduction, in which the guidance of the magnetic flux is optimal. There are therefore no eddy current losses and no heating in the edge region of the recesses.
  • the guidance of the magnetic flux is also flawless in the transition area between the core columns and the yoke.
  • cooling channels are arranged in the non-magnetic intermediate layers. This further development of the invention makes it possible to create the cooling channels for the flow of the oil with simple operations.
  • the three-phase choke coil consists of three core columns 1, which are constructed from individual radially laminated packages 2. Non-magnetic spacings 3 are arranged between the individual packages 2.
  • the three core columns 1 arranged in one plane are connected to one another by an upper and a lower yoke 4 (not shown).
  • the core columns 1 and the yokes 4 have cylindrical recesses 5. The core columns 1 with the yokes 4 are pressed together and held together with the central tension bolts arranged in these recesses 5.
  • this area 6 is replaced by a non-magnetic material (FIG. 3).
  • the packets 2 of the core columns 1 adjoining the yokes have non-magnetic intermediate layers 7 that widen in cross-section. Through these wedge-shaped intermediate layers 7, the magnetic flux is continuously conducted into the uninterrupted zone of the yokes. This does not result in eddy current losses, nor does it result in inadmissible heating in the peripheral zones. The arrangement of auxiliary yokes is no longer necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • General Induction Heating (AREA)

Claims (2)

1. Bobine d'arrêt dont les colonnes de noyau (1) sont formées de différents paquets (2) à tôles radiales séparés les uns des autres par des espacements amagnétiques (3) et reliés à des culasses (4) présentant une section rectangulaire ou en gradin, les colonnes de noyau (1) et les culasses (4) présentant des évidements cylindriques alignés (5) pour recevoir des tirants centraux, caractérisée par le fait que les paquets (2) des colonnes de noyau (1), appliqués contre les culasses (4) présentent des couches intermédiaires amagnétiques (7) s'élargissant en coin dans leur section en direction des culasses (4) et que les culasses (4) présentent des couches intermédiaires amagnétiques (6) à section rectangulaire et que ces couches intermédiaires (6, 7) sont disposées dans la région médiane interrompue par les évidements (5).
2. Bobine d'arrêt selon la revendication 1, caractérisée par le fait que dans les couches intermédiaires amagnétiques (6, 7) sont disposés des canaux de refroidissement.
EP79890057A 1978-12-12 1979-12-11 Bobine d'inductance Expired EP0012739B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT882778A AT357236B (de) 1978-12-12 1978-12-12 Drosselspule
AT8827/78 1978-12-12

Publications (2)

Publication Number Publication Date
EP0012739A1 EP0012739A1 (fr) 1980-06-25
EP0012739B1 true EP0012739B1 (fr) 1981-10-14

Family

ID=3608902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79890057A Expired EP0012739B1 (fr) 1978-12-12 1979-12-11 Bobine d'inductance

Country Status (5)

Country Link
US (1) US4301437A (fr)
EP (1) EP0012739B1 (fr)
JP (1) JPS6030088B2 (fr)
AT (1) AT357236B (fr)
DE (1) DE2961033D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT407205B (de) * 1998-04-27 2001-01-25 Va Tech Elin Transformatoren G Drosselspule
FI117528B (fi) * 2004-06-11 2006-11-15 Abb Oy Jäähdytetty monivaiheinen kuristinkokoonpano
JP6088605B1 (ja) 2015-08-31 2017-03-01 ファナック株式会社 視覚センサを用いたロボットシステム

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR497023A (fr) * 1918-02-28 1919-11-22 Bbc Brown Boveri & Cie Dispositif pour le refroidissement de transformateurs à air ou à huile "cas a"
DE406399C (de) * 1919-09-23 1924-11-21 Siemens Schuckertwerke G M B H Transformatoren und Drosselspulen mit Zwischenraeumen im Eisen
US1546885A (en) * 1923-12-31 1925-07-21 Gen Electric Transformer core
GB229484A (en) * 1924-02-15 1925-02-26 Frederick Edmund Berry Improvements in or relating to electric transformers
FR619593A (fr) * 1925-12-05 1927-04-05 Alsacienne Constr Meca Procédé de refroidissement de la culasse supérieure des transformateurs
FR630070A (fr) * 1926-03-12 1927-11-23 Savoisienne Const Elec Perfectionnement apporté à la construction des noyaux magnétiques, formés de tôles empilées, en vue de leur refroidissement
DE723560C (de) * 1937-10-19 1942-08-06 Bbc Brown Boveri & Cie Transformator
DE730718C (de) * 1938-08-03 1943-01-16 Bbc Brown Boveri & Cie Transformator
DE820767C (de) * 1948-06-19 1951-11-12 Brown Ag Dreiphasentransformator
US2910663A (en) * 1954-12-29 1959-10-27 Gen Electric Transformer core clamp connector
DE1231345B (de) * 1956-02-09 1966-12-29 Wilfried Fritzsche Dr Ing Geschichteter Rechteckkern
GB831439A (en) * 1957-04-11 1960-03-30 Gen Electric Co Ltd Improvements in or relating to magnetic core structures
GB923276A (en) * 1960-02-09 1963-04-10 Ferranti Ltd Improvements relating to electrical transformers
US3189858A (en) * 1961-01-11 1965-06-15 Westinghouse Electric Corp Magnetic core structures
GB1102562A (en) * 1964-05-25 1968-02-07 English Electric Co Ltd Electrical reactors
CH480719A (de) * 1968-03-28 1969-10-31 Bbc Brown Boveri & Cie Transformatorkern mit Kühlkanälen parallel zu den Blechen, und Verfahren zu seiner Herstellung

Also Published As

Publication number Publication date
US4301437A (en) 1981-11-17
JPS5582422A (en) 1980-06-21
EP0012739A1 (fr) 1980-06-25
JPS6030088B2 (ja) 1985-07-15
AT357236B (de) 1980-06-25
ATA882778A (de) 1979-11-15
DE2961033D1 (en) 1981-12-24

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