本研究主要內容為針對應用於小型壓縮機之永磁電機，探討在氣隙小的精密電機中由於不同的轉子組裝方式對動機運轉所造成之影響。因為，此一由轉矩漣波所造成的振動與晃動問題，輕則損耗增加，重則轉子卡死無法正常工作，所以必須針對其轉矩漣波作大幅改善。
改善轉矩漣波特性上有多種方法，本文採用轉子分段偏斜方法。此法主要能夠快速且有效降低轉矩漣波，亦能維持小型壓縮機之工作需求規範。研究過程將利用二維與三維有限元素分析軟體分析轉子分段偏斜特性，以歸納出不同電機轉子分段偏斜架構下之分析流程，並輔佐以針對一些特殊案例之完整說明。希望本研究之結果可提供予電機設計者在轉子分段偏斜取捨上的參考。

The main content of this research is focused on the interior permanent-magnet motors designs for low-power compressor applications. In order to effectively reduce the motor operational vibrations, the corresponding torque ripple characteristics will be improved by step-skewed rotor structural arrangements. Based on numerical assessments, results obtained from appropriate 2D finite element analyses will be adopted instead of using 3D ones for speeding up the calculations, and a systematic design guidance is proposed to simplify the optimal design of motors with step-skewed rotors. Finally, illustrations on some motors with special step-skewed rotor structures will also be proposed to validate the systematic design process.

論文審定書 i
誌謝 ii
中文摘要 iii
英文摘要 iv
目錄 v
圖目錄 vii
表目錄 ix
符號對照表 x
第一章 緒論 1
1.1 前言 1
1.2 研究動機與方法 1
1.3 研究重點與目標 4
第二章 永磁同步機及結構影響 5
2.1 永磁同步機概述 5
2.2 壓縮機應用及操作區間 7
2.3 轉子孔位對於穩態特性影響 8
第三章 電動機之分段偏斜應用及特性分析 14
3.1 分段偏斜方法介紹 14
3.2 不同轉子分段結構下之有限元素分析 20
3.3 設計目標與性能要求 24
3.4 分段偏斜分析及選擇 26
3.5 靈敏度分析 29
第四章 轉子分段偏斜之優化設計 34
4.1 田口法最佳化 34
4.1.1. 田口法介紹 34
4.1.2. 直交表選擇及實驗結果 35
4.1.3. 平均值及變異數分析 36
4.2 穩態分析比較與流程圖 39
第五章 轉子分段偏斜之特殊案例探討 43
5.1 特殊案例: VPM與SPM 43
5.2 特殊案例: CVPM 46
第六章 結論與討論 50
參考文獻 51
作者自述 54

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