Title:
ADHERED/LAYERED CORE FOR STATOR AND ROTATING ELECTRICAL MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/129921
Kind Code:
A1
Abstract:
Provided is an adhered/layered core for a stator. A chemical component of each of electromagnetic steel sheets contains 2.5-3.9% by mass of Si. The average tensile modulus of elasticity of each of adhesion parts is 2500-5000 MPa. If the average sheet thickness of each electromagnetic steel sheet is t1 in mm units, the average thickness of each adhesion part is t2 in μm units, and the average value of yield strength of each electromagnetic steel sheet is YP in MPa units, at least one of condition A satisfying equations 1, 2, and 3 below and condition B satisfying equations 3, 4, and 5 below is satisfied. (Equation 1): 50×t1-12≤t2≤50×t1-6 (Equation 2): 0.15≤t1≤0.27 (Equation 3): 0.5≤t2≤2.5 (Equation 4): 0.025×YP-12≤t2≤0.025×YP-8 (Equation 5): 380≤YP≤540
Inventors:
TAKEDA KAZUTOSHI (JP)
HIRAYAMA RYU (JP)
HIRAYAMA RYU (JP)
Application Number:
PCT/JP2019/049257
Publication Date:
June 25, 2020
Filing Date:
December 17, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
H02K15/02; H02K1/18
Domestic Patent References:
| WO2005031767A1 | 2005-04-07 |
Foreign References:
| JP2017011863A | 2017-01-12 | |||
| JP2016046969A | 2016-04-04 | |||
| JP2010259158A | 2010-11-11 | |||
| JP2007039721A | 2007-02-15 | |||
| JP2002078257A | 2002-03-15 | |||
| JP2002125341A | 2002-04-26 | |||
| JP2014096429A | 2014-05-22 | |||
| JP2018235865A | 2018-12-17 | |||
| JP2004088970A | 2004-03-18 |
Other References:
See also references of EP 3902126A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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