TW359841B - Eddy current shield device, and three-phase transformer - Google Patents

Eddy current shield device, and three-phase transformer

Info

Publication number
TW359841B
TW359841B TW087100566A TW87100566A TW359841B TW 359841 B TW359841 B TW 359841B TW 087100566 A TW087100566 A TW 087100566A TW 87100566 A TW87100566 A TW 87100566A TW 359841 B TW359841 B TW 359841B
Authority
TW
Taiwan
Prior art keywords
round
eddy current
windings
inwall
winding
Prior art date
Application number
TW087100566A
Other languages
Chinese (zh)
Inventor
Yoshiya Higuchi
Makoto Koizumi
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of TW359841B publication Critical patent/TW359841B/en

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
    • H01F27/34—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
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

An integrated shield, where longitudinal one round shields 14a and 14b, which surround three pairs of windings 1a, 1b, and 1c severally and make a round in a longitudinal direction (the direction interlinked with the crossover magnetic flux between the phases of the windings in a pair), so that they do not interlink with an iron core, bypassing the top and bottom of the iron core 2, and a lateral one round shield 15 which makes a round in the direction of the winding, that is, in the lateral direction (the direction interlinked with the leaked magnetic flux of the winding) are combined. They are jointed together, so that these are integrated electrically at these crossing parts, that is, at the lapping part, they are arranged on the side of the inwall of the tank wherein a transformer is enclosed. In this way the eddy currents generated on the inwall of the transformer tank can be reduced, and the heat generation suppressed, and the operation efficiency improved.
TW087100566A 1997-02-07 1998-01-16 Eddy current shield device, and three-phase transformer TW359841B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02528197A JP3566481B2 (en) 1997-02-07 1997-02-07 Eddy current shield device and three-phase transformer

Publications (1)

Publication Number Publication Date
TW359841B true TW359841B (en) 1999-06-01

Family

ID=12161648

Family Applications (1)

Application Number Title Priority Date Filing Date
TW087100566A TW359841B (en) 1997-02-07 1998-01-16 Eddy current shield device, and three-phase transformer

Country Status (5)

Country Link
JP (1) JP3566481B2 (en)
KR (1) KR19980071129A (en)
CN (1) CN1086502C (en)
FR (1) FR2759488B1 (en)
TW (1) TW359841B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH695643A5 (en) * 2001-07-03 2006-07-14 Cfw Emf Consulting Ag Shield for receiving at least one a non-ionizing radiation or a non-ionizing field generating object.
WO2007136307A1 (en) * 2006-05-19 2007-11-29 Abb Technology Ltd. Reactor shield
WO2010078682A1 (en) * 2008-12-30 2010-07-15 特变电工沈阳变压器集团有限公司 Magnetic leakage shielding method of super-large capacity transformer
JP5641578B2 (en) * 2011-09-01 2014-12-17 トクデン株式会社 Superheated steam generator
KR101236447B1 (en) 2012-06-28 2013-02-22 국제전기 주식회사 Wedge core mounting structure of electromotion vehicle transformer
JP6577545B2 (en) 2017-09-15 2019-09-18 ファナック株式会社 Three-phase transformer
JP6856707B2 (en) * 2019-06-21 2021-04-07 ファナック株式会社 Three-phase transformer
EP3916742A1 (en) * 2020-05-27 2021-12-01 ABB Power Grids Switzerland AG Transformer insulation modification

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60207318A (en) * 1984-03-31 1985-10-18 Toshiba Corp Transformer
FR2730849B1 (en) * 1995-02-20 1997-05-09 Actia TRANSFORMER, PARTICULARLY FOR AN ENERGY CONVERTER, AND A RESONANCE ENERGY CONVERTER HAVING SUCH A TRANSFORMER

Also Published As

Publication number Publication date
CN1086502C (en) 2002-06-19
JPH10223454A (en) 1998-08-21
FR2759488A1 (en) 1998-08-14
FR2759488B1 (en) 2000-09-01
CN1190242A (en) 1998-08-12
JP3566481B2 (en) 2004-09-15
KR19980071129A (en) 1998-10-26

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