Title:
THREE-PHASE TRIPOD IRON CORE AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/167016
Kind Code:
A1
Abstract:
Provided is a three-phase tripod iron core which has excellent magnetic characteristics and has a low transformer iron loss without using two or more kinds of materials having different magnetic characteristics. This three-phase tripod iron core comprises: two inner core parts which are formed from a grain‐oriented electrical steel sheet, as a material, and are adjoining each other; and one outer core part which surrounds the two inner core parts. The two inner core parts and the one outer core part each have a planar section and a corner section adjoining the planar section, the planar section has a lap portion, and the corner section has bending portions. The corner sections of the two inner core parts and the one outer core part each have two bending portions, and the angle formed between the two bending portions is 55° or less. The grain‐oriented electrical steel sheet has a magnetic flux density B8 of 1.92-1.98 T when the magnetic field strength H is 800 A/m.
Inventors:
INOUE HIROTAKA (JP)
OMURA TAKESHI (JP)
SHIMIZU KENKI (JP)
OMURA TAKESHI (JP)
SHIMIZU KENKI (JP)
Application Number:
PCT/JP2023/005716
Publication Date:
September 07, 2023
Filing Date:
February 17, 2023
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
H01F27/245; C21D8/12; C22C38/00; C22C38/60; H01F1/147; H01F41/02
Domestic Patent References:
| WO2020071512A1 | 2020-04-09 |
Foreign References:
| JP2018157142A | 2018-10-04 | |||
| JP2019087619A | 2019-06-06 | |||
| JP2018198258A | 2018-12-13 | |||
| US6473961B1 | 2002-11-05 | |||
| JP2022027234A | 2022-02-10 |
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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