2017 Fiscal Year Final Research Report
Study on Reduction of Transformer Noise by Vector Magnetic Characteristic Control
| Project/Area Number |
15K18025
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Nippon Bunri University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | ベクトル磁気特性 / 二次元磁気ひずみ / 電磁鋼板 / 鉄損 / 変圧器 / 騒音 / 磁区微細分化処理 / 鉄心 |
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| Outline of Final Research Achievements |
In this study, focusing on the magnetostriction of grain-oriented electrical steel sheet which is the main factor of transformer noise, we have constructed a technology capable of reducing both iron loss and magnetostriction. We confirmed reduction of iron loss and magnetostriction under arbitrary directional alternating magnetic flux and rotating magnetic flux by applying laser treatment to the surface of the existing grain oriented electromagnetic steel sheet. It was also confirmed that the magnetic domain structure was finely differentiated by laser treatment. This processing technique was applied to the transformer model core and its effect was verified. As a result, iron loss can be reduced and the effectiveness of the vector magnetic characteristic control technology is clarified.
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| Free Research Field |
電気電子工学
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