| 著者 | Takahashi, Norio| Ochi, Yoshiyuki| Nakano, Katsumi| Shimada, Koji| Wakasono, Hiromi| |
|---|---|
| 発行日 | 2002-05-17 |
| 出版物タイトル | Magnetics |
| 巻 | 38巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Gotoh, Yuji| Takahashi, Norio| |
|---|---|
| 発行日 | 2003-5 |
| 出版物タイトル | Magnetics |
| 巻 | 39巻 |
| 号 | 3号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Nakase, Tomoya| Nakano, Masanori| Fujiwara, Koji| Takahashi, Norio| |
|---|---|
| 発行日 | 1999-03-05 |
| 出版物タイトル | Magnetics |
| 巻 | 35巻 |
| 号 | 5号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Miyagi, Daisuke| Saitou, Aisya| Takahashi, Norio| Uchida, Naoki| Ozaki, Kazuhiro| |
|---|---|
| 発行日 | 2006-2 |
| 出版物タイトル | Magnetics |
| 巻 | 42巻 |
| 号 | 2号 |
| 資料タイプ | 学術雑誌論文 |
| 著者 | Okamoto, Yoshifumi| Akiyama, Koji| Takahashi, Norio| |
|---|---|
| 発行日 | 2006-4 |
| 出版物タイトル | Magnetics |
| 巻 | 42巻 |
| 号 | 4号 |
| 資料タイプ | 学術雑誌論文 |
| JaLCDOI | 10.18926/15762 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_18_1_1.pdf |
| 著者 | Nakata Takayoshi| Takahashi Norio| |
| 抄録 | The quantitative analysis of localized flux distributions in transformer cores has become easy through the progress of numerical field calculations. In this paper, the effects of core constructions, joint configurations, magnetizing characteristics of materials on the flux distributions are examined using newly developed techniques such as a gap element, an approximate method for solving three-dimensional magnetic fields, the time periodicity finite element method, an efficient technique for treating hysteresis characteristics and so on. A method for the optimum design of transformer cores is also discussed. Main results obtained can be summarized as follows: (a) The building factor of the core made of higely-oriented silicon steel is larger than that of the conventional core. (b) The iron losses at joints are much affected by overlap lengths, number of laminations per stagger layer and a small irregularity of the arrangement of sheets. (c) It is clarified that examinations of the optimum construction of core and the most desirable magnetic characteristics of core material are possible using the finite element method. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1984-03-30 |
| 巻 | 18巻 |
| 号 | 1号 |
| 開始ページ | 1 |
| 終了ページ | 31 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307976 |
| JaLCDOI | 10.18926/15736 |
|---|---|
| フルテキストURL | Mem_Sch_Eng_OU_14_1_15.pdf |
| 著者 | Ishihara Yoshiyuki| Takahashi Norio| |
| 抄録 | Characteristics of iron losses in silicon steel due to inclined rotating fluxes and distorted ones are described. Iron losses due to rotating fluxes have been measured at various conditions for grain-oriented and non-oriented silicon steels by using an improved thermistor-bridge method. Loss measurements indicate that the iron loss due to the inclined rotating flux is greater than that due to the non-inclined one. However, the iron loss due to the distorted rotating flux is not always greater than that due to the non-distorted one. |
| 出版物タイトル | Memoirs of the School of Engineering, Okayama University |
| 発行日 | 1979-12-01 |
| 巻 | 14巻 |
| 号 | 1号 |
| 開始ページ | 15 |
| 終了ページ | 28 |
| ISSN | 0475-0071 |
| 言語 | 英語 |
| 論文のバージョン | publisher |
| NAID | 120002307734 |