JP5750820B2 - 鉄損測定方法 - Google Patents
鉄損測定方法 Download PDFInfo
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- JP5750820B2 JP5750820B2 JP2009224202A JP2009224202A JP5750820B2 JP 5750820 B2 JP5750820 B2 JP 5750820B2 JP 2009224202 A JP2009224202 A JP 2009224202A JP 2009224202 A JP2009224202 A JP 2009224202A JP 5750820 B2 JP5750820 B2 JP 5750820B2
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- iron loss
- loss
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- iron
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 101
- 229910052742 iron Inorganic materials 0.000 title claims description 45
- 238000000691 measurement method Methods 0.000 title description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000005259 measurement Methods 0.000 claims description 26
- 230000005284 excitation Effects 0.000 claims description 25
- 238000001931 thermography Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 230000005415 magnetization Effects 0.000 claims description 11
- 238000009826 distribution Methods 0.000 description 20
- 230000005291 magnetic effect Effects 0.000 description 13
- 229910000976 Electrical steel Inorganic materials 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 230000004907 flux Effects 0.000 description 7
- 229910000565 Non-oriented electrical steel Inorganic materials 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000011162 core material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
板厚0.23m、鉄損W17/50の保証値が0.80W/kgの方向性電磁鋼板を用いて、図1に示すような500mm角の三相三脚の変圧器鉄心を作製した。脚およびヨークの幅は100mmで、脚間隔も100mmである。積層枚数は70枚とし、シフト量2mm、2枚ペアの5段ステップラップ積み構造とした。鉄心重量は、およそ20kgである。この鉄心の各脚に50ターンの一次励磁コイルと二次コイルをそれぞれ巻き付け、50Hzの三相励磁を行えるようにした。
まず、計測励磁条件までの昇磁速度は0.004〜0.1T/秒の範囲であることが必要である。0.004T/秒より小さい場合には、昇磁速度が遅すぎて板面内の伝熱が十分に進んでしまう。図3は、前記したT型接合部近傍での2点間の昇温速度から算出した鉄損差を示したものであるが、昇磁速度が0.004T/秒より小さくなると、伝熱の影響により、昇温速度から算出した鉄損差が縮まってしまい、電磁鋼板内あるいはその積層体内の部位ごとの鉄損評価はできなくなる。逆に、0.1T/秒より大きい場合には、図4に示すように、励磁自体が間に合わず、計測励磁条件まで磁束密度を安定して到達させることができない。
Claims (1)
- 電磁鋼板またはその積層体を被測定物とし、その表面の温度上昇速度から被測定物の交流鉄損値をサーモグラフィにより測定する方法において、所定の励磁条件に到達するまでの昇磁速度を0.004〜0.1T/秒とし、上記励磁条件に到達後から40秒後までの間において、測定時間を1秒以上40秒以内として被測定物の温度上昇速度を測定することを特徴とする電磁鋼板積層体の鉄損測定方法。
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JP2009224202A JP5750820B2 (ja) | 2009-09-29 | 2009-09-29 | 鉄損測定方法 |
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JP2009224202A JP5750820B2 (ja) | 2009-09-29 | 2009-09-29 | 鉄損測定方法 |
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JP2011075297A JP2011075297A (ja) | 2011-04-14 |
JP5750820B2 true JP5750820B2 (ja) | 2015-07-22 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200103090A (ko) | 2018-01-31 | 2020-09-01 | 제이에프이 스틸 가부시키가이샤 | 방향성 전자 강판 및 이것을 이용하여 이루어지는 변압기의 권철심과 권철심의 제조 방법 |
US11495378B2 (en) | 2018-01-31 | 2022-11-08 | Jfe Steel Corporation | Grain-oriented electrical steel sheet, stacked transformer core using the same, and method for producing stacked core |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6575549B2 (ja) * | 2017-03-22 | 2019-09-18 | Jfeスチール株式会社 | 鉄損予測方法 |
CN111413548B (zh) * | 2020-03-16 | 2022-12-27 | 苏州大学 | 基于光纤测温的铁心损耗和分布估计方法和装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4357074B2 (ja) * | 2000-03-17 | 2009-11-04 | 株式会社ブリヂストン | タイヤの摩耗予測方法及びタイヤの摩耗予測装置 |
JP2003234225A (ja) * | 2002-02-08 | 2003-08-22 | Nissan Motor Co Ltd | 渦電流損の評価方法およびその装置 |
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- 2009-09-29 JP JP2009224202A patent/JP5750820B2/ja active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200103090A (ko) | 2018-01-31 | 2020-09-01 | 제이에프이 스틸 가부시키가이샤 | 방향성 전자 강판 및 이것을 이용하여 이루어지는 변압기의 권철심과 권철심의 제조 방법 |
US11495378B2 (en) | 2018-01-31 | 2022-11-08 | Jfe Steel Corporation | Grain-oriented electrical steel sheet, stacked transformer core using the same, and method for producing stacked core |
US11984249B2 (en) | 2018-01-31 | 2024-05-14 | Jfe Steel Corporation | Grain-oriented electrical steel sheet, wound transformer core using the same, and method for producing wound core |
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JP2011075297A (ja) | 2011-04-14 |
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