小型垂直軸風機無鐵芯軸向磁通永磁發電機研究

Research of Coreless AFPM Generator for Small Vertical Axial Wind Turbine

李聚儒(Chu-Ju Li)

指導教授 ： 鄭榮和

國立臺灣大學/工學院/機械工程學研究所/碩士(2009年)

https://doi.org/10.6342/NTU.2009.00962

摘要

發電機為風機系統中重要能量轉換裝置，而不同型式風機的運轉特性亦不相同，因此風力發電機必需針對各種型式風機之需求來進行設計。本研究針對都市型垂直軸式風機需求進行發電機設計探討，發電機除了基本的高效率目標，亦須滿足低轉速與低啟動扭力等條件，此外如何降低發電機成本亦為重要課題之一。
本研究以1kW垂直軸式風機需求出發，展開發電機設計規格，配合使用經驗公式與JMAG電磁模擬軟體進行磁路設計。透過實際製造與測試此1kW原型發電機，驗證本設計方法與軟體模擬之正確性，並藉由分析製造中預到的各種問題，改正設計疏失與設計參數計算方式。最後，使用2D FEM進行磁石幾何配置參數分析，搭配簡化之發電機等效電路，提出一以「無鐵芯軸向磁通永磁發電機」為設計基礎，簡易且快速的發電機性能評估方法，加速發電機設計之進行。

關鍵字

風力發電機 ； 軸向磁通 ； 軸向磁通永磁發電機 ； 無鐵芯設計 ； 風力發電機規格

並列摘要

Wind turbines incorporate a generator as an energy device to transfer mechanical energy into electrical energy. Due to the diversity of the environmental factors, the characteristics of wind turbines have different solutions. As an important device to transfer the energy, the generator requires a specific design to meet requirements from different types of wind turbines.
The objective for this thesis is to propose a generator design for City-Type Vertical Axial Wind Turbine. In particular, it addresses the question of how to reduce the cost while reaching the target of high efficiency, as well as the requirements of low starting torque and low speed.
This thesis is based upon the characteristic requirements from a 1kW Vertical Axial Wind Turbine. After the initial specification setting, the generator was designed using FME software, Jmag. A prototype generator was constructed, the performances of the prototype generator were measured and compared with the predicted results for experimental verification.
This thesis also presents the evaluating method of an AFPM generator for the application in wind turbines. The evaluating method incorporating the analytical and 2D finite element analyses addresses a fast and easy way to predict the performance of generators. It can be concluded from the predicted evaluation that it should be able to speed up wind turbine generator design.

並列關鍵字

Wind Turbine Generator ； Axial Flux ； AFPM Generator ； Coreless Design ； Wind Turbine Generator Specification

參考文獻

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[15] R. J. Wang, M. J. Kamper, J. F. Gieras, “Optimal Design of a Coreless Stator Flux Permanent-Magnet Generator,” IEEE Transactions on Magnetics, Vol.41, No1, pp.55-64, January 2005.

[17] E. Spooner, P. Gordon, J. R. Bumby and C. D. French, “Lightweight Ironless-Stator PM Generators for Direct-Drive Wind Turbines,” IEE Proc.-Electr. Power Appl., Vol. 152, No. 1, January 2005.