Invention Grant
- Patent Title: Wound iron core for static apparatus, amorphous transformer and coil winding frame for transformer
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Application No.: US14512078Application Date: 2014-10-10
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Publication No.: US09601256B2Publication Date: 2017-03-21
- Inventor: Kenji Nakanoue , Kazuyuki Fukui , Hidemasa Yamaguchi , Kouhei Satou , Tatsuhito Azegami , Makoto Shinohara , Toshiaki Takahashi , Tooru Honma , Masanao Kuwabara , Toshiki Shirahata , Yuuji Satou , Manabu Dohi , Ryosuke Mikoshiba , Hiroyuki Endou
- Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
- Current Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: McDermott Will & Emery LLP
- Priority: JP2008-225646 20080903; JP2008-277003 20081028; JP2008-283855 20081105; JP2008-288689 20081111; JP2009-057753 20090311; JP2009-173084 20090724
- Main IPC: H01F27/26
- IPC: H01F27/26 ; H01F27/06 ; H01F27/02 ; H01F27/30 ; H01F27/25 ; H01F27/245 ; H01F27/32 ; H01F27/34 ; H01F3/10

Abstract:
Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core. A ring-shaped iron core is configured such that a plurality of block-like laminated members, which are each formed by laminating a plurality of strip-like amorphous material thin plates, are laminated and formed into a ring shape and a sheet-like non-magnetic insulation material is arranged between the n-th (n: an integer of two or more) layer of the ring-shaped block-like laminated members from the most inner circumference side and the (n+1)-th layer of the ring-shaped block-like laminated members from the most inner circumference side.
Public/Granted literature
- US20150028977A1 WOUND IRON CORE FOR STATIC APPARATUS, AMORPHOUS TRANSFORMER AND COIL WINDING FRAME FOR TRANSFORMER Public/Granted day:2015-01-29
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