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博碩士論文 etd-0731106-162054 詳細資訊
Title page for etd-0731106-162054
論文名稱
Title
模內電磁攪拌器之三維特性分析
Three-dimensional Electromagnetic Performance Analyses of an In-mold Stirrer
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
77
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2006-07-28
繳交日期
Date of Submission
2006-07-31
關鍵字
Keywords
渦流、電磁特性、有限元素、攪拌器
stirrer, finite element, eddy current, electromagnetic characteristic
統計
Statistics
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中文摘要
模內電磁攪拌器為鋼鐵廠中用以攪拌融熔鋼液的裝置,本論文針對一利用定子上繞線產生行進磁場運作之模內電磁攪拌器提供完整的三維電磁分析。首先利用有限元素分析套裝軟體進行精密的計算,分別以靜態模擬以及動態模擬兩種不同方式進行三維空間內磁通密度、渦流以及電磁作用力等等物理現象的分析並加以討論,以獲得鋼液中三維電磁特性,並在結構方面變更定子位置以模擬觀察整體電磁力分佈方式的差異性,變更輸入驅控電流大小以及頻率以推測實際操作可能情況,提供出合理之改善條件,以期使此模內電磁攪拌器獲得更佳的表現。
Abstract
The in-mold electromagnetic stirrer is a kind of device which is utilized to stir the molten steel in the steel factory. This thesis provides a detailed three-dimensional electromagnetic analysis of an in-mold electromagnetic stirrer driven by the moving magnetic field produced from stator winding currents. A commercial finite element analysis software will be utilized to calculate the flux density, eddy current, and electromagnetic force from static and dynamic analyses, and the above three physical phenomena are also discussed to obtain the 3-D electromagnetic characteristics. In order to improve the operational properties of the in-mold electromagnetic stirrer, the various position of the stator is modified to observe the distribution of the electromagnetic force. Besides, the magnitude and frequency of the input currents are also adjusted to predict the probable performances during on-site operation.
目次 Table of Contents
目 錄

頁次
中文摘要 Ⅰ
英文摘要 Ⅱ
目錄 Ⅲ
圖目錄 Ⅵ
表目錄 Ⅷ

第一章 緒論 1
1.1 前言 1
1.2 研究背景 3
1.3 研究重點與目標 5
1.4 論文架構 6

第二章 研究方法與進行步驟 7
2.1 尺寸架構及材質的確立 8
2.2 系統三維電磁場操作強度及分佈分析 10
2.3 系統基本三維分析理論 11
2.4 系統三維電磁作用力分析 12
2.5 有限元素分析法介紹 13
2.6 系統求解 15

第三章 靜態物理特性分析 16
3.1 基礎架構建立 16
3.2 三維電磁特性分析 24
3.3 靜態模擬討論與分析 35

第四章 動態電磁特性分析 36
4.1 電磁理論背景介紹 36
4.2 動態模擬結構建立 40
4.3 電磁特性分析 42
4.4 應用變數分析 51
4.4.1 定子高度不同 51
4.4.2 輸入電流大小不同 53
4.4.3 輸入電流頻率不同 56
4.5 動態模擬討論與分析 59

第五章 結論與討論 61

參考文獻 64

作者自述 66
參考文獻 References
參考文獻

[1]中國鋼鐵公司網頁/產品製造/製造流程/連鑄生產流程http:// www.csc.com.tw/csc/pd/prs05.htm (7/15/2006).

[2]R. Hirayama, K. Fujisaki, and T. Yamada, “Dual in-mold electromagnetic stirring in continuous casting,” IEEE Trans. on Magnetics, Vol. 40, No. 4, pp. 2095-2097, 2004.

[3]K. Fujisaki, J. Nakagawa, and H. Misumi, “Fundamental characteristics of molten metal flow control by linear induction motor,” IEEE Trans. on Magnetics, Vol. 30, No. 6, pp. 4764 -4766, 1994.

[4]K. Fujisaki, “In-mold electromagnetic stirring in continuous casting,” IEEE Trans. on Industry Applications, Vol. 37, No. 4, pp. 1098-2004, 2001.

[5]C.-T. Liu, J.L. Kuo, L.F. Chen, Y.N. Chen, Y.J. Lee, and C.T. Leu, “Fast 3-D magnetic field analysis of transverse flux linear reluctance propulsion machine by Fourier projection method,” IEEE Trans. on Magnetics, Vol. 31, No. 6, pp. 4223-4225, 1995.

[6]C.-T. Liu, J.L. Kuo, L.F. Chen, Y.J. Lee, Y.N. Chen, and C.T. Leu, “Interaction force analysis of transverse flux linear switched reluctance machine by Fourier projection method,” IEEE Trans. on Energy Conversion, Vol. 11, No. 1, pp. 62-69, 1996.

[7]C.-T. Liu and S.C. Hsu, “Analysis of linear electromagnetic motion devices by multiple reference theory,” IEEE Trans. on Magnetics, Vol. 34, No. 4, pp. 2063-2065, 1998.

[8]陳俊豪譯,有限元素法導論,科技圖書股份有限公司,台北,台灣,民國七十九年。

[9]陳舜田譯,有限元素法,科技圖書股份有限公司,台北,台灣,民國七十九年。

[10]Flux3D User’s Guide Version 8.1, MAGSOFT Corporation, 2004.

[11]J.J. Cathey, Electric Machines: Analysis and Design Applying MATLAB, McGraw-Hill (International), Taipei, Taiwan, 2001.

[12]C.-T. Liu, K.S. Su, and M.H. Lee, “Three-dimensional field and side-force design analyses of a transverse flux linear switched-reluctance machine,” IEEE Trans. on Magnetics, Vol. 34, No. 4, pp. 2132-2134, 1998.

[13]D.K. Cheng, Field and Wave Electromagnetics, ed., Addison Wesley, Taipei, Taiwan, 1989.

[14]C.-T. Liu, S.Y. Lin, and C.C. Kao, “On the two-dimensional electromagnetic force control of linear switched-reluctance motor,” Proc. of the 8th MMM-InterMag Conference, San Antonio, TX, U.S.A., 2001.

[15]C.-T. Liu, K.S. Su, and J.W. Chen, “Material selections and three-dimensional force calculations of a transverse flux linear switched-reluctance machine,” Journal of the Chinese Institute of Electrical Engineering, Vol. 8, No. 3, pp. 207-218, Aug. 2001.
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