FR2438325A1 - Magnetic core producing three dimensional field - has cylindrical laminated centre section and radially involuted outer section - Google Patents

Magnetic core producing three dimensional field - has cylindrical laminated centre section and radially involuted outer section

Info

Publication number
FR2438325A1
FR2438325A1 FR7924385A FR7924385A FR2438325A1 FR 2438325 A1 FR2438325 A1 FR 2438325A1 FR 7924385 A FR7924385 A FR 7924385A FR 7924385 A FR7924385 A FR 7924385A FR 2438325 A1 FR2438325 A1 FR 2438325A1
Authority
FR
France
Prior art keywords
involuted
core
radially
section
magnetic core
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.)
Granted
Application number
FR7924385A
Other languages
French (fr)
Other versions
FR2438325B1 (en
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 AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Publication of FR2438325A1 publication Critical patent/FR2438325A1/en
Application granted granted Critical
Publication of FR2438325B1 publication Critical patent/FR2438325B1/fr
Granted 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
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/02—Cores, Yokes, or armatures made from sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/06—Cores, Yokes, or armatures made from wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/08—Cores, Yokes, or armatures made from powder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Magnetic Treatment Devices (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)

Abstract

A magnetic core is used for the production of a three-dimensional magnetic field. It has good magnetic properties producing axial and radial fields and it consists of a cetre core and an outer core. The centre core (1) is laminated and cylindrically-shaped from a stack of discs (2). The outer core (3) is built up from radially involuted laminae (4). The laminae can also have different geometric shapes. The eddy currents in such a core are considerably reduced.
FR7924385A 1978-10-04 1979-10-01 Magnetic core producing three dimensional field - has cylindrical laminated centre section and radially involuted outer section Granted FR2438325A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1028878 1978-10-04

Publications (2)

Publication Number Publication Date
FR2438325A1 true FR2438325A1 (en) 1980-04-30
FR2438325B1 FR2438325B1 (en) 1984-08-24

Family

ID=4361566

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7924385A Granted FR2438325A1 (en) 1978-10-04 1979-10-01 Magnetic core producing three dimensional field - has cylindrical laminated centre section and radially involuted outer section

Country Status (4)

Country Link
JP (1) JPS5550606A (en)
DE (1) DE2845122A1 (en)
FR (1) FR2438325A1 (en)
SE (1) SE7908121L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118198A1 (en) * 1983-02-25 1984-09-12 Picker International Limited Magnets
US9330834B2 (en) 2010-05-18 2016-05-03 Kobe Steel Ltd. Reactor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3600386A1 (en) * 1986-01-09 1987-07-16 Schramme Gmbh LIFT MAGNET
DE19537362B4 (en) * 1994-10-06 2008-03-06 Denso Corp., Kariya Method for producing a cylindrical stator
FR2802074B1 (en) * 1999-12-13 2002-03-01 Dja Dodane Jean Et Associes GRIPPING DEVICE FOR COOKING UTENSILS

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE40414C (en) * C. ZlPERNOWSKY, M. DERI und O. T. BLATHY in Budapest; Innovations in Induction Apparatus for Transforming Electric Currents
FR336513A (en) * 1902-11-11 1904-03-11 Arthur Francis Berry Electric transformer
GB388183A (en) * 1932-01-25 1933-02-23 August Zopp Improvements in and relating to electric transformers
CH212730A (en) * 1939-02-04 1940-12-15 Bbc Brown Boveri & Cie Three-phase saturated inductor.
FR924543A (en) * 1945-03-28 1947-08-07 Brown Magnetic core for current transformers
DE1055689B (en) * 1955-09-12 1959-04-23 Gen Electric Inductive ballast for electric discharge lamps
US2962679A (en) * 1955-07-25 1960-11-29 Gen Electric Coaxial core inductive structures
FR1279847A (en) * 1961-02-08 1961-12-22 Transformatoren & Roentgenwerk Process for making laminated cores and core according to those obtained by the process or similar process
FR1315603A (en) * 1962-02-21 1963-01-18 Magnetic core and its manufacturing process
DE1244944B (en) * 1963-04-06 1967-07-20 C H F Mueller G M B H Sheath core built from sheet metal for a high voltage transformer
CA906747A (en) * 1968-04-11 1972-08-08 Trench Electric Limited Method of making transformer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE472403C (en) * 1923-05-26 1929-03-01
AT105546B (en) * 1925-08-21 1927-02-10 Felten & Guilleaume Carlswerk Process for the production of magnetic cores for Pupin's coils.
DE502063C (en) * 1927-09-16 1930-07-10 August Zopp Transformer with a leafed iron core
CH160857A (en) * 1931-12-30 1933-03-31 Zopp August Transformer.
US2601212A (en) * 1948-11-09 1952-06-17 Gen Aniline & Film Corp Heat resistant magnetic cores and method of making
CH290119A (en) * 1950-08-24 1953-04-15 Siemens Ag Magnetic core.
DE1740491U (en) * 1956-12-20 1957-02-28 Vakuumschmelze A G RING-SHAPED HOLLOW MAGNETIC CORE.
FR2303439A1 (en) * 1975-03-07 1976-10-01 Cem Comp Electro Mec CHANNEL OVEN FOR MELTING METALS AND ALLOYS WITH A SINGLE INDUCING COIL ENSURING THE HEATING AND FORCED CIRCULATION OF MELTED METAL

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE40414C (en) * C. ZlPERNOWSKY, M. DERI und O. T. BLATHY in Budapest; Innovations in Induction Apparatus for Transforming Electric Currents
FR336513A (en) * 1902-11-11 1904-03-11 Arthur Francis Berry Electric transformer
GB388183A (en) * 1932-01-25 1933-02-23 August Zopp Improvements in and relating to electric transformers
CH212730A (en) * 1939-02-04 1940-12-15 Bbc Brown Boveri & Cie Three-phase saturated inductor.
FR924543A (en) * 1945-03-28 1947-08-07 Brown Magnetic core for current transformers
US2962679A (en) * 1955-07-25 1960-11-29 Gen Electric Coaxial core inductive structures
DE1055689B (en) * 1955-09-12 1959-04-23 Gen Electric Inductive ballast for electric discharge lamps
FR1279847A (en) * 1961-02-08 1961-12-22 Transformatoren & Roentgenwerk Process for making laminated cores and core according to those obtained by the process or similar process
FR1315603A (en) * 1962-02-21 1963-01-18 Magnetic core and its manufacturing process
DE1244944B (en) * 1963-04-06 1967-07-20 C H F Mueller G M B H Sheath core built from sheet metal for a high voltage transformer
CA906747A (en) * 1968-04-11 1972-08-08 Trench Electric Limited Method of making transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118198A1 (en) * 1983-02-25 1984-09-12 Picker International Limited Magnets
US9330834B2 (en) 2010-05-18 2016-05-03 Kobe Steel Ltd. Reactor

Also Published As

Publication number Publication date
JPS5550606A (en) 1980-04-12
SE7908121L (en) 1980-04-05
DE2845122A1 (en) 1980-04-17
FR2438325B1 (en) 1984-08-24

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Legal Events

Date Code Title Description
ST Notification of lapse