臺灣博碩士論文加值系統

本文旨在開發一應用於健身車之永磁同步發電機，首先針對一市售發電機了解其設計規範後，接著利用有限元素法計算其非線性電磁特性，進而針對此發電機之缺點（例如磁石斜型增加製程的困難度、開路電壓之總諧波失真分佈（THD）過大造成控制不易、震動及噪音的產生、齒部磁通密度易飽和造成發電機鐵損的增加…等問題）進行改善；此外，利用田口法再搭配灰關聯分析（Grey Relation Analysis）及模糊推論（Fuzzy Inference System），針對發電機之頓轉轉矩及開路電壓進行最佳化分析；最後針對最佳化之發電機進行負載特性分析。

The aim of this thesis is to design a permanent magnet synchronous generator which applied for an exercise bike. First, design guidelines are known from a ready-made generator. Secondly, finite element analysis software was applied to calculate non-linear electromagnetic characteristics of the generator. The inborn drawbacks of the generator such as, magnet skew, THD quite large and tooth flux density saturation need to improve. Furthermore, to reduce the cogging torque and enhance the open-circuit voltage, the Taguchi method coupled with the Grey Relation Analysis and the Fuzzy Inference System was performed. Finally, load characteristics of the generator were calculated.

誌謝 i
摘要 ii
Abstract iii
目錄 iv
圖目錄 vii
表目錄 x
縮寫及符號對照表 xiii
第一章 緒論 1
1.1 前言 1
1.2 研究動機與目的 3
1.3 研究步驟 5
1.4 文獻研讀 6
1.5 論文架構 7
第二章 永磁同步發電機之原理與磁路設計 9
2.1 發電機基本原理 9
2.1.1 發電機動機原理 9
2.1.2 發電機優點 10
2.2發電機磁路設計 11
2.2.1 等效磁路模型 12
2.2.2 等效磁路解析 14
2.2.3 磁通交鏈 17
2.2.4 反電動勢 18
2.3 發電機需求規範 19
2.3.1 主要尺寸與需求 19
2.3.2 轉子形態 21
2.3.3 磁鐵種類 21
2.3.4 轉子極數與槽數 23
2.3.5 繞線原理與選擇 24
第三章 永磁同步發電機之電磁分析與改善 28
3.1 有限元素分析軟體之分析流程 28
3.2 發電機之電磁特性與分析 31
3.2.1 發電機2D之模擬結果 31
3.2.2 發電機3D之模擬結果 33
3.2.3 邊緣效應 36
3.2.4 磁石斜型 38
3.3 發電機之改善 41
3.3.1 修改齒部寬度 42
3.3.2 修改磁石展開角度 45
3.4 總結 48
第四章 永磁同步發電機之最佳化流程與分析 51
4.1 最佳化流程 51
4.2 最佳化分析 57
4.3 最佳化方法比較 75
第五章 永磁同步發電機之負載特性分析 78
5.1 不同負載電阻對發電機輸出特性之影響 78
5.2 不同轉速對發電機輸出特性之影響 82
5.3 發電機之阻力控制 85
5.4 發電機連接整流電路對輸出特性之影響 87
第六章 結論 90
參考文獻 91
作者簡介 96

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