JPS57194507A - Iron core of three-phase transformer - Google Patents

Iron core of three-phase transformer

Info

Publication number
JPS57194507A
JPS57194507A JP56081304A JP8130481A JPS57194507A JP S57194507 A JPS57194507 A JP S57194507A JP 56081304 A JP56081304 A JP 56081304A JP 8130481 A JP8130481 A JP 8130481A JP S57194507 A JPS57194507 A JP S57194507A
Authority
JP
Japan
Prior art keywords
central leg
magnetic flux
distortion
electrical sheets
eddy
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
JP56081304A
Other languages
Japanese (ja)
Other versions
JPS6233728B2 (en
Inventor
Yoshihiro Oota
Yuji Kushibe
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56081304A priority Critical patent/JPS57194507A/en
Publication of JPS57194507A publication Critical patent/JPS57194507A/en
Publication of JPS6233728B2 publication Critical patent/JPS6233728B2/ja
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

PURPOSE:To improve the building factor of iron loss of the central leg of a three-phase transformer iron core, by forming the central leg by laminating electrical sheets provided with minute distortion in the direction perpendicular to the rolling direction. CONSTITUTION:Electrical sheets cut into given shapes are laminated to form outer legs 1, 2, upper yoeks 4, 5 and lower yokes 6, 7. Electrical sheets provided with linear minute distortion 12 in the direction perpendicular to the magnetizing direction are laminated to form a central leg 11. Thereby, not only the eddy- current loss due to fundamental wave magnetic flux can be reduced, but also the eddy-current loss due to the higher harmonic component of the distorted wave magnetic flux can be reduced. Moreover, since, owing to the linear minute distorsion, the magnetic permeability in the rolling direction decreases by about 25%, there is a decrease in amount of magnetic flux flowing in the central leg 11 in the state where it is not excited, so that the distortion of the magnetic flux waveform is eased. As a result, the building factor of the iron loss of the central leg is improved.
JP56081304A 1981-05-26 1981-05-26 Iron core of three-phase transformer Granted JPS57194507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56081304A JPS57194507A (en) 1981-05-26 1981-05-26 Iron core of three-phase transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56081304A JPS57194507A (en) 1981-05-26 1981-05-26 Iron core of three-phase transformer

Publications (2)

Publication Number Publication Date
JPS57194507A true JPS57194507A (en) 1982-11-30
JPS6233728B2 JPS6233728B2 (en) 1987-07-22

Family

ID=13742645

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56081304A Granted JPS57194507A (en) 1981-05-26 1981-05-26 Iron core of three-phase transformer

Country Status (1)

Country Link
JP (1) JPS57194507A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107275055A (en) * 2017-05-12 2017-10-20 中科电力装备集团有限公司 A kind of transformer iron-core structure
CN109841400A (en) * 2019-03-28 2019-06-04 广州增变电气有限公司 A kind of assembly device and method of amorphous alloy transformer iron core
JP2019102692A (en) * 2017-12-05 2019-06-24 日本製鉄株式会社 Stacked core
CN112550512A (en) * 2020-12-09 2021-03-26 北京理工大学重庆创新中心 Wheel-legged robot and driving method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293917A (en) * 1976-02-02 1977-08-08 Hitachi Ltd Three phase induction electrical apparatus iron core

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5293917A (en) * 1976-02-02 1977-08-08 Hitachi Ltd Three phase induction electrical apparatus iron core

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107275055A (en) * 2017-05-12 2017-10-20 中科电力装备集团有限公司 A kind of transformer iron-core structure
JP2019102692A (en) * 2017-12-05 2019-06-24 日本製鉄株式会社 Stacked core
CN109841400A (en) * 2019-03-28 2019-06-04 广州增变电气有限公司 A kind of assembly device and method of amorphous alloy transformer iron core
CN112550512A (en) * 2020-12-09 2021-03-26 北京理工大学重庆创新中心 Wheel-legged robot and driving method thereof
CN112550512B (en) * 2020-12-09 2023-07-21 北京理工大学重庆创新中心 Wheel leg robot and driving method thereof

Also Published As

Publication number Publication date
JPS6233728B2 (en) 1987-07-22

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