臺灣博碩士論文加值系統

本文旨在探討無轉軸偵測元件永磁同步電動機驅動系統。文中，首先介紹永磁同步電動機的結構與特性，接著提出轉軸角度估測及換相方法。上述方法係偵測電動機的端電壓及相電流，並加以計算後求得反電勢作為依據，進一步分別運用方波及正弦波電流進行驅動，再配合高速弱磁控制以擴展其控速範圍。最後，設計一個複合式速度控制器，該控制器是以傳統的比例-積分器，加上滑動模式控制器來控制永磁同步電動機。除了進行電腦模擬外，文中並實際製作一套無轉軸偵測元件永磁同步電動機驅動系統，該系統是以數位信號處理器為核心，以實現轉軸估測及速度控制法則。實驗結果證明本文所提出的相關方法正確可行，且具有良好的性能。

This thesis proposes a sensorless drive system for a permanent magnet synchronous motor. First, the structure and characteristics of the permanent magnet synchronous motor are introduced. Next, a rotor position estimating technique and a commutating technique are discussed. These methods detect voltages and currents of the motor, and then compute the back emf. After that, by using the back emf, a square-wave command and a sinusoidal-wave command are used to drive the motor. Moreover, a field-weakening control is used to extend the motor speed. Finally, a compound speed controller is proposed. The controller combines a traditional PI controller and a sliding mode controller. A digital signal processor based sensorless drive system is implemented. The simulation and experimental results can validate the theoretical analysis. The results show that the proposed system has satisfactory performance.

中文摘要 I
英文摘要 II
目錄 III
圖目錄 V
表目錄 IX
符號索引 X
第一章 緒論 1
1.1 研究動機 1
1.2 文獻回顧 2
1.3 研究目的 6
1.4 大綱 6
第二章 永磁式同步電動機 7
2.1 簡介 7
2.2 結構與特性 7
2.3 數學模式 13
第三章 永磁同步電動機的驅動 18
3.1 簡介 18
3.2 無感測器之方波電流驅動(方法1及方法2) 22
3.3 無感測器之正弦波電流驅動(方法3) 34
第四章 控制器設計 37
4.1 簡介 37
4.2 滑動模式控制器 37
4.3 複合式速度控制器 40
第五章 弱磁控制 47
5.1 基本原理 47
5.2 實現方法 55
第六章 系統研製 58
6.1 簡介 58
6.2 硬體電路製作 59
6.2.1三相變頻器電路 59
6.2.2電流偵測電路 60
6.2.3電壓偵測電路 61
6.2.4類比/數位轉換器電路 62
6.2.5數位信號處理器 63
6.3 軟體程式設計 64
6.3.1 主程式 64
6.3.2中斷服務程式 65
第七章 模擬與實測 73
7.1 簡介 73
7.2 電腦模擬 74
7.3 模擬與實測結果 81
第八章 結論與建議 115
參考文獻- 118
作者簡介 126

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