臺灣博碩士論文加值系統

本論文主要是提出一套最佳化的馬達設計技巧。首先，以一個三相四極九槽表面型永磁馬達為範例，利用遺傳演算法求出具最佳效率結構尺寸的馬達，並以等效磁路法模擬分析出馬達達到最佳效率的參數。
因遺傳演算法無法考慮許多文獻中所提出的降低頓轉轉矩的方法，例如：修改磁石形狀與使用輔助槽的技術等。因此，本論文再利用田口法嘗試使馬達效率的最佳，且頓轉轉矩最低，文中搭配有限元素分析計算馬達的性能。從本論文的模擬的結果可以發現，先以遺傳演算法優化馬達效率，再搭配田口法降低頓轉轉矩，的確可以達成高性能的馬達設計。

In this thesis, techniques for the optimal design of an SPM motor are presented. First, the application of Genetic algorithms (GAs) for efficiency optimization of a 3-phase, 4-pole and 9-slot SPM motor is illustrated. The design parameters that can maximize the efficiency are found based on an equivalent magnetic circuit analysis
However, the GAs can not consider the methods to reduce cogging torque proposed by many researchers including magnet shaping sizing, and adding dummy slots. This paper then applies the Taguchi parameter design of the motor optimized after GAs in order to maximize efficiency and to minimize cogging torque. The finite element analysis is conducted to compute the performance of the motor design generated by the Taguchi design of experiments. It is shown that the technique presented in this thesis is effective for obtaining the design parameters having low levels of cogging torque and high efficiency.

目錄
誌謝 i
摘要 ii
Abstract iii
目錄 vi
圖目錄 ix
表目錄 xi
縮寫及符號對照表 xii
第一章 緒論 1
1.1 研究動機與目的 1
1.2 文獻研讀 3
1.3 研究步驟 5
1.4 本論文之貢獻 6
1.5 論文內容概述 7
第二章 遺傳演算法與馬達設計 8
2.1 單目標與多目標最佳設計問題 8
2.1.1 設計變數處理 9
2.1.2 設計目標函數 10
2.1.3 限制條件 10
2.2 遺傳演算法 11
2.2.1理論 11
2.2.2基本架構 12
2.3 懲罰函數法 20
2.4 馬達最佳尺寸設計 21
2.4.1 馬達設計規劃 21
2.4.2 馬達效率最佳化 25
第三章 磁路分析與電氣參數 31
3.1 氣隙磁通密度分析 31
3.1.1 等效磁路 32
3.1.2 有限元素分析 34
3.2 馬達電氣參數 35
3.2.1 反電動勢 35
3.2.2 轉矩 36
3.2.3 相電阻、相電流及相電感 37
3.2.4 各種損失與效率 38
第四章 高效率與低頓轉轉矩之馬達設計 42
4.1 馬達設計 42
4.1.1 馬達設計目標 43
4.1.1.1 輸入與輸出特性 43
4.1.1.2 材料特性 43
4.1.1.3 尺寸條件 44
4.1.2 馬達設計步驟 46
4.2 馬達模型的建立與鐵心磁通密度分析 53
4.2.1 馬達結構參數設計 53
4.2.2 馬達特性分析 54
4.3 電氣參數設計 58
4.4 結論 59
第五章 田口法最佳化設計 60
5.1 田口法簡介 60
5.2 直交表 61
5.3 參數選擇與實驗設計 64
5.4 最佳化分析與結果 67
5.4.1 平均值分析 68
5.4.2 變異性分析 71
5.5 結論 77
第六章 結論 79
參考文獻 82
作者簡介 85

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