GB2036450A - Magnetic core for a transformer or an induction coil - Google Patents

Magnetic core for a transformer or an induction coil

Info

Publication number
GB2036450A
GB2036450A GB7933519A GB7933519A GB2036450A GB 2036450 A GB2036450 A GB 2036450A GB 7933519 A GB7933519 A GB 7933519A GB 7933519 A GB7933519 A GB 7933519A GB 2036450 A GB2036450 A GB 2036450A
Authority
GB
United Kingdom
Prior art keywords
yokes
transformer
field
stacking direction
auxiliary
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Withdrawn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
GB7933519A
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.)
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri France SA
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 BBC Brown Boveri France SA filed Critical BBC Brown Boveri France SA
Publication of GB2036450A publication Critical patent/GB2036450A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Compounds Of Iron (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

Magnetic core for a monophase or a multiphase high tension power transformer, comprising at least a column (10) and the associated fieldclosing yokes (12, 14). The yokes are provided with further auxiliary yokes (20, 22) forming low resistance return paths for the leakage magnetic field of the transformer windings. The auxiliary yokes (20, 22) are mechanically connected to the field-closing yokes (12, 14). They are made of stacked transformer sheets, the stacking direction being parallel to the stacking direction of column (10) and to the stacking direction of the field-closing yokes (12, 14). Field-closing yokes (12, 14) and auxiliary yokes (20, 22) are pressed together by means of side sheets (30). The auxiliary yokes (20, 22) have sufficient dimensions for ensuring the flow of the whole leakage magnetic field generated by the transformer winding.
GB7933519A 1978-02-02 1979-01-25 Magnetic core for a transformer or an induction coil Withdrawn GB2036450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782804397 DE2804397A1 (en) 1978-02-02 1978-02-02 MAGNETIC FRAME FOR A TRANSFORMER OR A REACTOR

Publications (1)

Publication Number Publication Date
GB2036450A true GB2036450A (en) 1980-06-25

Family

ID=6030961

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7933519A Withdrawn GB2036450A (en) 1978-02-02 1979-01-25 Magnetic core for a transformer or an induction coil

Country Status (8)

Country Link
EP (1) EP0009489A1 (en)
BE (1) BE873873A (en)
DE (1) DE2804397A1 (en)
GB (1) GB2036450A (en)
IT (1) IT1111969B (en)
NL (1) NL7900839A (en)
SE (1) SE7908161L (en)
WO (1) WO1979000579A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE366467C (en) * 1923-01-08 Siemens Schuckertwerke G M B H Device for avoiding eddy currents in the iron parts of transformers or reactors
GB218918A (en) * 1923-09-18 1924-07-17 Gen Electric Improvements in and relating to electric transformers
US2386904A (en) * 1942-01-10 1945-10-16 Line Material Co Electromagnetic device
DE961190C (en) * 1954-08-19 1957-04-04 Westinghouse Electric Corp Transformer with laminated iron core supporting the windings and additional laminated auxiliary cores
DE1056731B (en) * 1957-09-18 1959-05-06 Siemens Ag Device for reducing the losses caused by stray fields in transformers and choke coils by means of stray bodies
DE1488222A1 (en) * 1964-10-19 1968-12-05 Licentia Gmbh Arrangement for tensioning the active part of choke coils
SE338612B (en) * 1968-05-30 1971-09-13 Asea Ab
US4012706A (en) * 1975-12-08 1977-03-15 General Electric Company Sheet-wound transformer coils

Also Published As

Publication number Publication date
NL7900839A (en) 1979-08-06
IT1111969B (en) 1986-01-13
DE2804397A1 (en) 1979-08-09
BE873873A (en) 1979-05-29
SE7908161L (en) 1979-10-02
EP0009489A1 (en) 1980-04-16
WO1979000579A1 (en) 1979-08-23
IT7919828A0 (en) 1979-02-01

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)