臺灣博碩士論文加值系統

本文擬研製ㄧ以數位信號處理器為基礎之三相感應電動機滑動模式轉速控制系統。首先將三相感應電動機之數學模式，經由座標軸轉換關係推導出以同步旋轉座標為參考座標之數學模式，再根據間接式轉子磁場導向控制法達到解耦合。由電壓空間向量脈波寬度調變輸出可變頻率及可變電壓之三相交流電源驅動三相感應電動機。為了克服感應電動機機械參數變化及負載干擾對控制響應的影響，轉速控制採用滑動模式控制器取代傳統比例-積分控制器，以提高轉速控制系統之響應及負載變動之適應性。
本文採用數位信號處理器為整體系統之控制核心，實際應用於 600 W 之三相感應電動機轉速控制系統。由實驗結果顯示，本論文所推導之滑動模式控制法則，具有良好轉速控制響應且能有效克服負載干擾之強健性。

The objective of this thesis is to develop a DSP-based sliding-mode controller for induction motor speed control system. The mathematical model of induction motor in synchronously rotating reference frame is derived from the three-phase circuit via the coordinate transformation. According to indirect field-oriented vector control method, the thesis achieves decoupling of the motor torque and rotor flux amplitude. The variable voltage and frequency of three-phase power source based on voltage space vector pulse-width modulation drives induction motor. Due to the fact that the variations of mechanical parameter and load disturbances affect the control responses, sliding mode controller instead of conventional PI-controller enhancing the response of speed control system and adaptation of load disturbance is proposed.
Finially, an experimental system is actually implemented in three-phase induction motor of 600 W using digital signal processor as the core of the speed control system. Experimental results confirm that the sliding mode control rule yield not only better response in speed but also superior robustness in external load disturbances.

中文摘要 I
英文摘要 II
誌 謝 III
目 錄 IV
符號索引 VII
圖表索引 XI
第一章 緒論 1
1.1 研究動機及目的 1
1.2 相關文獻回顧 2
1.3 整體系統架構 7
1.4 本文特色及大綱 8
第二章 三相感應電動機之數學模式及控制 10
2.1 前言 10
2.2 三相感應電動機之電氣方程式 10
2.2.1 a-b-c相之數學模式 11
2.2.2 d-q軸之三相感應電動機模式 14
2.3 三相感應電動機之機械方程式 20
2.4 三相感應電動機之可變頻率及可變電壓控制 21
2.5 三相感應電動機之磁場導向控制 23
2.5.1 間接式轉子磁場導向控制法 23
2.6 結語 26
第三章 三相變頻器及其控制 27
3.1 前言 27
3.2 三相變頻器之分析 28
3.3 三相變頻器之電壓空間向量脈波寬調變策略 30
3.4 結語 39
第四章 電流及轉速控制器之設計 40
4.1 前言 40
4.2 電流閉迴路控制之比例-積分控制器 41
4.3 轉速閉迴路控制之比例-積分控制器 43
4.4 滑動模式控制器 45
4.4.1 滑動模式控制器原理 45
4.4.2 轉速閉迴路控制之滑動模式控制器 48
4.5 結語 53
第五章 實體製作及測試結果 54
5.1 前言 54
5.2 硬體電路 54
5.2.1 數位信號處理器之介面電路 55
5.2.2 三相變頻器之製作 56
5.2.3 電流感測電路之製作 57
5.2.4 編碼器及轉速之回授 58
5.2.5 數位轉類比轉換器（D/A converter） 59
5.2.6 磁粉式煞車系統 60
5.3 軟體程式規劃 61
5.4 實測結果 65
5.4.1 三相感應電動機純量控制之實測結果 66
5.4.2 三相感應電動機間接式轉子磁場導向控制之實測結果 69
5.5 結語 87
第六章 結論與未來研究方向 89
6.1 結論 89
6.2 未來研究方向 89
參考文獻 91
附錄A 三相感應馬達之額定規格與參數 95
附錄B 數位/類比電路圖 96
作者簡介 97

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