2016 Fiscal Year Final Research Report
Anisotropy control by inverse magnetostriction for electrical steel for motors with low loss
| Project/Area Number |
26289084
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 磁気異方性 / 電磁鋼板 / 渦電流損失 / 逆磁歪効果 |
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| Outline of Final Research Achievements |
In order to reduce the iron loss of electrical steel for motors, we have to control the magnetic easy axes which orient to thick-direction of the electrical steels due to random orientation of crystal grains. An in-plane eddy current loss associated with thick-direction change of magnetic flux will be reduced when the thick-direction components of the magnetization can be turned toward in-plane of the electrical steels. Therefore, to obtain a basic relation, we investigated magnetic properties of electrical steels under uniform in-plane stress.As a result, it is clearly observed that the magnetization increases with tensile stress, and decreases with compressive stress. It is expected that the magnetizations of thick-direction were rotated to in-plane by applying tensile stress. These results shows the proposed method can reduce the iron loss of the electrical steels.
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| Free Research Field |
磁気工学
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