JPS5660005A - Improving method of core loss of three phase transformer - Google Patents

Improving method of core loss of three phase transformer

Info

Publication number
JPS5660005A
JPS5660005A JP13423779A JP13423779A JPS5660005A JP S5660005 A JPS5660005 A JP S5660005A JP 13423779 A JP13423779 A JP 13423779A JP 13423779 A JP13423779 A JP 13423779A JP S5660005 A JPS5660005 A JP S5660005A
Authority
JP
Japan
Prior art keywords
laser
core
phase transformer
apt
core loss
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
JP13423779A
Other languages
Japanese (ja)
Other versions
JPS6028130B2 (en
Inventor
Tadashi Ichiyama
Shigehiro Yamaguchi
Toru Inouchi
Yoshihiro Oya
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP54134237A priority Critical patent/JPS6028130B2/en
Priority to GB8033178A priority patent/GB2062972B/en
Priority to BE0/202518A priority patent/BE885780A/en
Priority to FR8022231A priority patent/FR2468191A1/en
Priority to DE3039544A priority patent/DE3039544C2/en
Publication of JPS5660005A publication Critical patent/JPS5660005A/en
Priority to US06/615,871 priority patent/US4613842A/en
Publication of JPS6028130B2 publication Critical patent/JPS6028130B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
    • C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/16—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of sheets
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electromagnetism (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

PURPOSE: To reduce the core loss at the T-shaped junction part of a three-phase transformer core by a method wherein junction parts of the core being apt to generate rotating magnetic flux are irradiated with a laser beam.
CONSTITUTION: Among a three-phase three-leg core of a three-phase transformer constituted by laminating alternately steel plate pieces as shown in the figure with solid lines and dotted lines, T-shaped junction parts 2 being apt to generate rotating magnetic flux are irradiated previously with a laser beam in parallel with the rolling direction of the steel plates as shown in the figure. As the laser device, ruby laser, YAG laser, nitrogen laser, etc., are used, and it is suitable to make to the density of irradiation energy to be 0.5W5J/cm2, the width of pulse ocillation time to be 10ms or less, the breadth of irradiation to be 0.01W1mm and the space between the irradiating line to be 2.5W20mm.
COPYRIGHT: (C)1981,JPO&Japio
JP54134237A 1979-10-19 1979-10-19 Method for improving iron loss in three-phase transformer core Expired JPS6028130B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP54134237A JPS6028130B2 (en) 1979-10-19 1979-10-19 Method for improving iron loss in three-phase transformer core
GB8033178A GB2062972B (en) 1979-10-19 1980-10-15 Iron core for electrical machinery and apparatus and well as method for producing the iron core
BE0/202518A BE885780A (en) 1979-10-19 1980-10-17 IRON CORES FOR ELECTRIC MACHINERY AND APPARATUS AND THE PRODUCTION THEREOF
FR8022231A FR2468191A1 (en) 1979-10-19 1980-10-17 IRON CORE FOR ELECTRICAL MACHINES AND APPARATUS, AND METHOD FOR MANUFACTURING THE CORE
DE3039544A DE3039544C2 (en) 1979-10-19 1980-10-20 Iron core for electrical systems and process for its production
US06/615,871 US4613842A (en) 1979-10-19 1984-05-31 Iron core for electrical machinery and apparatus as well as method for producing the iron core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54134237A JPS6028130B2 (en) 1979-10-19 1979-10-19 Method for improving iron loss in three-phase transformer core

Publications (2)

Publication Number Publication Date
JPS5660005A true JPS5660005A (en) 1981-05-23
JPS6028130B2 JPS6028130B2 (en) 1985-07-03

Family

ID=15123619

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54134237A Expired JPS6028130B2 (en) 1979-10-19 1979-10-19 Method for improving iron loss in three-phase transformer core

Country Status (2)

Country Link
JP (1) JPS6028130B2 (en)
BE (1) BE885780A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008060353A (en) * 2006-08-31 2008-03-13 Jfe Steel Kk Product iron core transformer and manufacturing method therefor
WO2010140381A1 (en) * 2009-06-04 2010-12-09 新日本製鐵株式会社 Iron core for electric power equipment and manufacturing method therefor
JP2012135123A (en) * 2010-12-22 2012-07-12 Jfe Steel Corp Motor core with small iron loss deterioration under compressive stress
JP2017532447A (en) * 2014-08-28 2017-11-02 ポスコＰｏｓｃｏ Magnetic domain refinement method and magnetic domain refinement apparatus for grain-oriented electrical steel sheet, and grain-oriented electrical steel sheet produced therefrom
JP2018159604A (en) * 2017-03-22 2018-10-11 Ｊｆｅスチール株式会社 Iron loss prediction method
US10192669B2 (en) 2013-11-29 2019-01-29 Toshiba Industrial Products & Systems Corporation Vector magnetic characteristic controlled material and iron core
CN111822887A (en) * 2020-07-14 2020-10-27 深圳中科光子科技有限公司 Processing system and method for laser drilling thick glass

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008060353A (en) * 2006-08-31 2008-03-13 Jfe Steel Kk Product iron core transformer and manufacturing method therefor
WO2010140381A1 (en) * 2009-06-04 2010-12-09 新日本製鐵株式会社 Iron core for electric power equipment and manufacturing method therefor
JPWO2010140381A1 (en) * 2009-06-04 2012-11-15 新日本製鐵株式会社 Iron core for electric power equipment and manufacturing method thereof
JP2012135123A (en) * 2010-12-22 2012-07-12 Jfe Steel Corp Motor core with small iron loss deterioration under compressive stress
US10192669B2 (en) 2013-11-29 2019-01-29 Toshiba Industrial Products & Systems Corporation Vector magnetic characteristic controlled material and iron core
JP2017532447A (en) * 2014-08-28 2017-11-02 ポスコＰｏｓｃｏ Magnetic domain refinement method and magnetic domain refinement apparatus for grain-oriented electrical steel sheet, and grain-oriented electrical steel sheet produced therefrom
JP2018159604A (en) * 2017-03-22 2018-10-11 Ｊｆｅスチール株式会社 Iron loss prediction method
CN111822887A (en) * 2020-07-14 2020-10-27 深圳中科光子科技有限公司 Processing system and method for laser drilling thick glass
CN111822887B (en) * 2020-07-14 2022-04-26 深圳中科光子科技有限公司 Processing system and method for laser drilling thick glass

Also Published As

Publication number Publication date
BE885780A (en) 1981-02-16
JPS6028130B2 (en) 1985-07-03

Similar Documents

Publication Publication Date Title
US4613842A (en) Iron core for electrical machinery and apparatus as well as method for producing the iron core
Iuchi et al. Laser processing for reducing core loss of grain oriented silicon steel
JPS5518566A (en) Improving method for iron loss characteristic of directional electrical steel sheet
JPS5660005A (en) Improving method of core loss of three phase transformer
NO156878B (en) PROCESS OF RECOVERY OF ENERGY IN A POWER GENERATOR AND A POWER GENERATOR FOR PERFORMING THE PROCEDURE.
JPS5651522A (en) Production of magnetic steel sheet with superior iron loss characteristic for electric machinery
GB1539459A (en) Method and apparatus for splitting a beam of energy
GB1538380A (en) Method and apparatus for controlling the neutron flux in nuclear reactors
JPS57143808A (en) Wound core for stationary electrical equipment
JPS5749A (en) Coupling method of stator
JPS5466404A (en) Preparing field coil
JPS5683012A (en) Improving method for iron loss of transformer core
JPS5270959A (en) Weld structure welded by high energy density beam and its welding method and device
JPS5666023A (en) Manufacture of magnetic circuit
ZA777419B (en) Means for absorbing short-circuit forces in power transformers
JPS5538640A (en) Manufacture of magnetic core
Mirmel'shtein et al. Superconductivity and Softening of the Phonon Spectrum in Mo sub 3 Ge Irradiated With Fast Neutrons
JPS5744204A (en) Drilling method of boron material
JPS5675286A (en) Building method of cell structure for container ship
JPS5237554A (en) Irradiation method of exhaust gas with electron beam
JPS5724518A (en) Coil core for power line filter
SU1718487A1 (en) Method and device for laser piercing
JPS53351A (en) Method and apparatus for super low head water power generation
Basak Reduction of power loss in a three-phase transformer core by using Y-45° type T-joint
Sheppard et al. Amorphous Metal Core Power Transformers(Economic Considerations)