2009 Fiscal Year Final Research Report
Influence of compressive stress along the thickness direction in laminated electrical steel sheet on properties of electrical machines
| Project/Area Number |
20760184
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Okayama University |
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Principal Investigator |
MIYAGI Daisuke Okayama University, 大学院・自然科学研究科, 助教 (10346413)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 無方向性電磁鋼板 / 圧縮応力依存性 / 鉄損 / 比透磁率 / 異方性 / ヒステリシスループ |
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| Research Abstract |
The magnetic properties of a motor core are affected by the distortion due to the compressive stress in the thickness direction caused by bolt bundles etc. The correlation between the compressive stress and its magnetic properties of a non-oriented electrical steel sheet is measured using a single sheet tester which is developed in this study. Under the compressive stress in the thickness direction, the permeability in both the rolling and transverse directions is decreased. The hysteresis loss in the rolling direction is increased even if a small amount of compressive stress is impressed in the thickness direction. On the other hand, the hysteresis loss in the transverse direction is increased little under the compressive stress in the thickness direction. As the compressed stress in the thickness direction is increased, the eddy current losses in both the rolling direction and the transverse direction are increased.
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Research Products
(6 results)
