WO2013058808A3 - Wound transformer core and method of manufacture - Google Patents

Wound transformer core and method of manufacture Download PDF

Info

Publication number
WO2013058808A3
WO2013058808A3 PCT/US2012/000520 US2012000520W WO2013058808A3 WO 2013058808 A3 WO2013058808 A3 WO 2013058808A3 US 2012000520 W US2012000520 W US 2012000520W WO 2013058808 A3 WO2013058808 A3 WO 2013058808A3
Authority
WO
WIPO (PCT)
Prior art keywords
wound
transformer core
manufacture
wound transformer
core
Prior art date
Application number
PCT/US2012/000520
Other languages
French (fr)
Other versions
WO2013058808A2 (en
Inventor
Keith D. EARHART
John S. HURST
Original Assignee
Earhart Keith D
Hurst John S
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 Earhart Keith D, Hurst John S filed Critical Earhart Keith D
Priority to CA2853037A priority Critical patent/CA2853037A1/en
Priority to EP12841237.6A priority patent/EP2769389A4/en
Priority to BR112014009610A priority patent/BR112014009610A2/en
Publication of WO2013058808A2 publication Critical patent/WO2013058808A2/en
Publication of WO2013058808A3 publication Critical patent/WO2013058808A3/en
Priority to ZA2014/03037A priority patent/ZA201403037B/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • 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
    • H01F27/25—Magnetic cores made from strips or ribbons

Abstract

In a transformer core and transformer, a wound transformer core is formed from magnetic steel strips that are wound into multiple rings of different widths and arranged to define a ring-like structure having a stepped, substantially circular cross-section without any cuts or gaps in the magnetic path, or the core is wound from one or more tapered strips that are wound to define a cross-section that is circular, oval, egg-shaped, or square-shaped with truncated corners.
PCT/US2012/000520 2011-10-19 2012-10-18 Wound transformer core and method of manufacture WO2013058808A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2853037A CA2853037A1 (en) 2011-10-19 2012-10-18 Wound transformer core and method of manufacture
EP12841237.6A EP2769389A4 (en) 2011-10-19 2012-10-18 Wound transformer core and method of manufacture
BR112014009610A BR112014009610A2 (en) 2011-10-19 2012-10-18 coiled transformer core and manufacturing method
ZA2014/03037A ZA201403037B (en) 2011-10-19 2014-04-25 Wound transformer core and method of manufacture

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161627916P 2011-10-19 2011-10-19
US61/627,916 2011-10-19
US201261634123P 2012-02-22 2012-02-22
US61/634,123 2012-02-22

Publications (2)

Publication Number Publication Date
WO2013058808A2 WO2013058808A2 (en) 2013-04-25
WO2013058808A3 true WO2013058808A3 (en) 2014-03-06

Family

ID=48141588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/000520 WO2013058808A2 (en) 2011-10-19 2012-10-18 Wound transformer core and method of manufacture

Country Status (5)

Country Link
EP (1) EP2769389A4 (en)
BR (1) BR112014009610A2 (en)
CA (1) CA2853037A1 (en)
WO (1) WO2013058808A2 (en)
ZA (1) ZA201403037B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104252954A (en) * 2014-06-25 2014-12-31 上海置信电气非晶有限公司 Broken-yoke iron core of three-phase amorphous alloy transformer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114023539B (en) * 2021-11-03 2023-04-07 无锡普天铁心股份有限公司 Method capable of saving transformer core material
CN115222157B (en) * 2022-09-06 2023-11-07 江阴市晶磁电子有限公司 Intelligent prediction device for iron core data of current transformer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411374A (en) * 1943-01-07 1946-11-19 Westinghouse Electric Corp Magnetic core structure for threephase transformers
US4557039A (en) * 1979-10-19 1985-12-10 Susan V. Manderson Method of manufacturing transformer cores
US4848684A (en) * 1986-11-22 1989-07-18 Kitamura Kiden Co., Ltd. Wound core having circular and elliptic outer surface portions
US5285565A (en) * 1990-04-06 1994-02-15 General Electric Company Method for making a transformer core comprising amorphous steel strips surrounding the core window
US5387894A (en) * 1991-06-10 1995-02-07 Gec Alsthom Limited Distribution transformers
US20040022294A1 (en) * 2000-08-09 2004-02-05 Kenji Yamamori Wire-wound apparatus and high-voltage pulse generating circuit using wire-wound apparatus
US20110248808A1 (en) * 2010-04-07 2011-10-13 Abb Technology Ag Outdoor dry-type transformer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2498747A (en) * 1944-09-20 1950-02-28 Mcgraw Electric Co Electromagnetic device and method of making the same
US2465798A (en) * 1946-03-28 1949-03-29 Gen Electric Magnetic core
DE2702455A1 (en) * 1977-01-21 1978-07-27 Andreev Three=phase transformer core - has three rectangular rings with parallel sides adjacent, to form triangular prism shape
JPH0541327A (en) * 1991-08-05 1993-02-19 Denki Tetsushin Kogyo Kk Manufacture of wound iron core

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2411374A (en) * 1943-01-07 1946-11-19 Westinghouse Electric Corp Magnetic core structure for threephase transformers
US4557039A (en) * 1979-10-19 1985-12-10 Susan V. Manderson Method of manufacturing transformer cores
US4848684A (en) * 1986-11-22 1989-07-18 Kitamura Kiden Co., Ltd. Wound core having circular and elliptic outer surface portions
US5285565A (en) * 1990-04-06 1994-02-15 General Electric Company Method for making a transformer core comprising amorphous steel strips surrounding the core window
US5387894A (en) * 1991-06-10 1995-02-07 Gec Alsthom Limited Distribution transformers
US20040022294A1 (en) * 2000-08-09 2004-02-05 Kenji Yamamori Wire-wound apparatus and high-voltage pulse generating circuit using wire-wound apparatus
US20110248808A1 (en) * 2010-04-07 2011-10-13 Abb Technology Ag Outdoor dry-type transformer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2769389A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104252954A (en) * 2014-06-25 2014-12-31 上海置信电气非晶有限公司 Broken-yoke iron core of three-phase amorphous alloy transformer

Also Published As

Publication number Publication date
CA2853037A1 (en) 2013-04-25
WO2013058808A2 (en) 2013-04-25
EP2769389A4 (en) 2015-06-17
BR112014009610A2 (en) 2017-05-09
ZA201403037B (en) 2016-02-24
EP2769389A2 (en) 2014-08-27

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