發展小型垂直軸風力發電機來適應都會型態的特殊環境，已成為近年來歐美及日本風能市場積極推展的新概念，因此低轉速、高效率之永磁發電機已有其發展之新契機。
本論文旨在以42極200轉輸出10kW之外轉子永磁發電機為例，探討如何設計小型垂直軸風力發電之外轉子永磁發電機。首先，對於風力發電之原理及特性作一介紹，其次再利用有限元素分析軟體 Ansoft Maxwell 來分析不同槽數設計之永磁發電機的電磁特性，並以實作測試在不同轉速下之開路電壓、負載特性與電壓調整率，最後再做一比較，以期找出符合小型垂直軸風力發電之外轉子永磁發電機的特性需求。

Developing small vertical-axis wind turbine generator to adapt special environment as megalopolis becomes a new concept. Wind power market in Europe and Japan is actively to promote this concept. This is why low-speed and high-efficiency PM generator has opportunity to develop.
In This thesis, a 10kW / 42 Pole / 200RPM outer-rotor PM generator was used as an example to analyze how to design a well performance outer-rotor PM generator for the small vertical-axis wind turbine. First, the principle and characteristics of wind turbine was introduced. Electromagnetic characteristics of a PM generator with different number slots were analyzed by Finite Element Method (FEM) software. Open-circuit voltage, loading characteristics and voltage adjusting rate were measured in different speed. By comparing the results of measurement and FEM simulation, small vertical-axis wind turbine was applied to find the characteristics of outer-rotor PM generator.

摘要 .......................................................................................................................... i
Abstract ................................................................................................................. ii
誌謝 ........................................................................................................................ iii
目錄 ........................................................................................................................ iv
圖目錄 .................................................................................................................... vi
表目錄 .................................................................................................................. viii
縮寫及符號對照表 ................................................................................................ ix
第一章 緒論 ............................................................................................................ 1
1.1 研究動機 ................................................................................................... 1
1.2 小型風力用發電機之現況 ....................................................................... 4
1.3 文獻回顧 ................................................................................................... 5
1.4 研究方法 ................................................................................................... 6
1.5 本論文架構 ............................................................................................... 6
第二章 風力發電原理與特性 ...........................................................................…. 8
2.1 風力機的結構與種類 ............................................................................... 8
2.2 風力發電原理 ......................................................................................... 12
2.3 風能轉換與計算 ..................................................................................... 13
2.4 風力機之特性係數 ................................................................................. 17
2.5 風力發電機最佳安裝位置 ..................................................................... 17
2.6 決定風力機與發電機的額定輸出 ......................................................... 19
第三章 永磁發電機之設計理論 .......................................................................... 21
3.1 永磁發電機設計原理 ............................................................................. 21
3.2 主要尺寸之決定 ..................................................................................... 21
3.3 轉子的安裝方式 ..................................................................................... 22
3.4 磁極 ......................................................................................................... 24
3.4 定子尺寸的決定 ..................................................................................... 29
第四章 結果分析與討論 ...................................................................................... 34
4.1 磁路模擬分析 ......................................................................................... 34
4.2 發電機特性分析與測試(一) - 42極126槽 ........................................... 37
4.3 發電機特性分析與測試(二) – 42極45槽 ............................................. 44
4.4 外轉子永磁發電機之測試系統架構 ..................................................... 51
4.5 結果比較 ................................................................................................. 53
第五章 結論與展望 .............................................................................................. 56
參考文獻 ................................................................................................................ 57

[1]. C.S. Brune, R. Spe'e and A.K. Wallace, “Experimental Evaluation of a Variable-Speed, Doubly-Fed Wind-Power Generation Systems,” IEEE Trans. Industry Application, Vol.30, No.3, pp.648-655, May/Jun., 1994.
[2]. A.S. Neris, N.A Vovos and G.B. Giannakopoulos, “A Variable Speed Wind Energy Conversion Scheme for Connection to Weak AC Systems,” IEEE Trans. Energy Conversion, Vol.EC-14, No.1, pp.122-127, March 1999.
[3]. E. Skarback, “The Potential for Wind Power in Sweden,” Wind Engineering, Vol.9, No.1, pp.35-41, 1988.
[4]. Birger T. Madsen, “Achievig 10% of world Power from Wind By 2020: a Blueprint,” Renewable Energy World, pp.41~61, Nov.1999.
[5]. “Wind Force 12: The New Global Challenge,” European Wind Energy Association, pp.20~22, May 2002.
[6]. J.Y. Chen, C.V. Nayar and L. Xu, “Design and Finite-Elenent Analysis of an Outer-Rotor Permanent-Magnet Generator for Directly Couple Wind Turbines,” IEEE Transaction on Magnetics, Vol. 36, No. 5 September 2000.
[7]. 風力發電應用技術研習手冊，財團法人祥和文教基金會主辦，民國90年9月29日
[8]. E. Spooner and A.C. Williamson, “Direct Couple, Permanent Magnet Generators for Wind Turbine Applications,” IEE proc-Electr. Power Appl., Vol. 143, No. 1, pp.1-8, January 1996.
[9]. W. Wu, V.S. Ramsden and T. Crawford, G. Hill, “A Low-Speed, High-Torque, Direct-Drive Permanent Generator,” IEEE Conference on Industry Applications, Vol. 1, pp.147-154, 2000.
[10]. J.Y. Chen and C.V. Nayar, “A Direct-coupled, Wind-driven Permanent Magnet Generator,” IEEE Conference on Energy Management and Power Delivery, Vol. 2, pp.542-547, 1998.
[11]. J.Y. Chen, C.V. Nayar and L. Xu, “Design and Finite-Element Analysis of an Outer-Rotor Permanent-Magnet Generator for Directly Couple Wind Turbines,” IEEE Transaction on Magnetic, Vol. 36, No. 5 September 2000.
[12]. Ben Wolff and Hans Meyer, Wind Energy, The Franklin Institute Press, 1978.
[13]. E.Welfonder, R. Neifer, and M. Spanner, “Development and experimental identification of dynamic models for wind turbines,” Control Engineering Practice, Vol. 5, No. 1, pp. 63–73, 1997.
[14]. J.F. Gieras and M. Wing, Permanent Magnet Motor Technology, Design and Applications, Marcel Dekker, Inc., New York, 1997.
[15]. Hanselman D.C., “Brushless Permanent-Magnet Motor Design,” McGraw-Hill, New York. 1994
[16]. 翁銘鴻，”新型風扇馬達之電腦輔助設計與分析”，成功大學機械工程研究所碩士論文，2001年7月
[17]. RM-Core, Kawasaki Steel Corporation, Japan.
[18]. 林顯宗，小容量風力發電機的研製，私立逢甲大學電機工程系碩士論文，2002