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研究生:黃昱銓
研究生(外文):Yu-ChuanHuang
論文名稱:永磁馬達無感測器驅動之電路分析與設計
論文名稱(外文):Analysis and Design of Sensorless Drive System for Permanent Magnet Motor
指導教授:蔡明祺
指導教授(外文):Mi-Ching Tsai
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2018
畢業學年度:106
語文別:中文
論文頁數:86
中文關鍵詞:無感測器驅動反電動勢偵測法相鎖迴路
外文關鍵詞:sensorless drive systemback EMF detectionphase lock loop
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本文主要為研製一風扇用無感測器永磁同步馬達驅動系統,藉由分析不同方法的無感測器驅動策略,來解析各策略的優劣,並透過市售驅動IC來比較各個的策略差異性。鑒於此,本研究在低成本與高實現性下,使用驅動IC來實現無感測器驅動。首先為強制對位之後,先透過變頻變壓法驅動定子繞組產生磁通以啟動永磁同步馬達,當馬達達門檻轉速後,量測未激磁相之反電動勢(back electromotive force)與中性點準位,並藉由相鎖迴路控制,穩定估測換相時機與轉速,以此調控脈寬調變訊號,以達成無感測器永磁同步馬達之轉速控制與穩定轉速輸出。本文先將驅動IC無感測驅動控制策略建置成方塊圖,並透過Matlab/Simulink模擬驗證系統之可行性,最後透過實驗驗證無感測器永磁同步馬達驅動系統可行性。
This thesis proposes a sensorless permanent magnet synchronous motor drive system for fan application. The conventional PMSM drive systems require Hall sensors or encoders to provide necessary position information about the rotor and the rotating speed. However, the Hall sensors are hard and expensive to be installed in fans. Therefore, sensorless driving techniques are currently being developed to avoid this problems.
Since most of the back-EMF measurement techniques suffer from electromagnetic interference and the uncertain zero crossing position detection. In this thesis, an improved sensorless control method using the third harmonic back-EMF with phase locked loop has been developed to improve the precision of the commutation sequence. Then, develops the schematic diagram for the third harmonic sensorless controller.
The sensorless control strategy is verified through Matlab/ Simulink. Then, the sensorless motor controller IC-ML4425 is used to construct the sensorless drive system.
The results show that the switching sequence provided by the Hall sensor and the proposed switching method are the same. Also, that by using the third harmonic back-EMF with phase locked loop the zero crossing detection method can improve the switching sequence detection. This sensorless drive system not only lowers the cost down but also increases the efficiency.
中文摘要 I
Abstract II
致謝 XI
目錄 XIII
表目錄 XVI
圖目錄 XVII
符號表 XXI
第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
1.3 論文架構 4
第二章 永磁同步馬達概述 6
2.1 永磁同步馬達簡介 6
2.2 永磁同步馬達之數學模型 8
2.3 永磁同步馬達之驅動方式 13
2.3.1 方波電流驅動 13
2.3.2 弦波電流驅動 18
第三章 無感測器驅動 21
3.1 無感測器驅動程序 21
3.1.1 轉子對位 22
3.1.2 啟動加速 23
3.1.3 閉迴路驅動 24
3.2 無感測器驅動策略 24
3.2.1 反電動勢估測法 24
3.2.2 三次諧波法 35
3.2.3 磁交鏈/電感觀測法 39
3.3 分析比較 43
第四章 IC選用與電路分析 44
4.1 IC分析比較 44
4.2 ML4425電路分析 47
4.1.1 對位模式 48
4.1.2 斜坡加速模式 50
4.1.3 運作模式 51
4.1.4 保護電路 58
第五章 系統模擬與實驗分析比較 60
5.1 系統架構 60
5.2 系統控制器設計 61
5.3 Matlab/Simulink模擬架構 70
5.4 實驗與模擬結果比較 73
第六章 結論與未來展望 79
6.1 結論 79
6.2 未來研究與建議 80
參考文獻 81
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