類弦波反電動式無刷直流馬達之SVPWM研究

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姓名

邱瑋國(Ciou,Wei-Guo) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

類弦波反電動式無刷直流馬達之SVPWM研究
(Non-sinusoidal back electromotive force brushless DC motor of SVPWM research)

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摘要(中)

本研究討論馬達只有霍爾傳感器情況下，使用基礎的空間向量脈波寬度調變，相較於六步控制可以提升馬達在各轉速與負載下的效率、並使馬達對於外部負載變化可以有更好的響應、提高馬達最大力矩輸出；另外地提出空間向量脈波寬度調變電壓向量的，排列方式調整以減少反流器切換損耗，並配合三相電流流動方向調整電壓向量的排列方式，藉由電壓向量排列方式與三相電流方向，調控MOS開關切換方式提高馬達運轉時效率。

市售的無刷馬達的反電動勢從標準梯形波到弦波都可以出現，甚至帶有諧波成分的類弦波，本研究針對個別馬達反電動勢進行波形分析，將具有諧波成分經過演算法加入空間向量脈波寬度調變，讓調整過的空間向量脈波寬度調變驅動對應馬達時可以有較理想的相電流，並使用噪音計量測六步方波控制、SVPWM、調整後SVPWM，三種控制方法在運轉時噪音大小，驗證馬達運轉時高頻噪音的差異。

摘要(英)

The study consider the motor only with the Hall sensor motor, and still can use under different the space vector pulse width modulation to improve motor efficiency speed and load infinite compared with six-steps control. The designed SVPWM could increase the maximum torque output. Also, properly arranging the SVPWM voltage vector pattern can reduce switching loss. In accordance with the motor three-phase current, this study adjusts the SVPWM voltage vector pattern. To reducing switching losses and enhance the motor efficiency.

The back-EMF of brushless DC motor include trapezoidal wave, sine wave, and even sine wave with harmonic components. The study analysis motor back-EMF first, and then add the harmonic components into the space vector pulse width modulation. Thus the adjusted space vector pulse width modulation drive can have more ideal motor phase current. Moreover, a sound meter is used to measure noises induced by six-step control, SVPWM, adjusted SVPWM.

關鍵字(中)

★ SVPWM
★ 反電動勢
★ 諧波分析
★ 切換損耗
★ 無刷馬達

關鍵字(英)

★ SVPWM
★ back-EMF
★ harmonic component
★ switching loss
★ BLDC

論文目次

目錄

摘要 I

ABSTRACT II

誌謝 III

目錄 IV

圖目錄 VI

表目錄 IX

第１章緒論 1

1.1 研究動機與目的 1

1.2 大綱 3

第２章無刷馬達介紹 4

2.1 前言 4

2.2 無刷直流馬達與永磁同步馬達簡介 4

2.2.1 無刷直流馬達介紹 4

2.2.2 無刷直流馬達數學模式 5

2.2.3 永磁同步馬達介紹 8

2.2.4 永磁同步馬達數學模式 9

2.3 本文研究之馬達介紹 16

第３章控制電路設計 18

3.1 MOSFET介紹 18

3.2 MOS開關驅動電路設計 18

3.3 微處理器 19

3.4 錳銅電阻電路設計 21

3.5 降壓電路設計 23

3.6 霍爾傳感器濾波電路 24

第４章馬達控制 25

4.1 霍爾傳感器 25

4.1.1 霍爾傳感器介紹 25

4.1.2 霍爾訊號修正 26

4.2 位置估測、速度估測 27

4.2.1 速度估測 27

4.2.2 位置估測 28

第５章空間向量脈波寬度調變 30

5.1 SVPWM導通 30

5.2 SVPWM導通調整 36

5.3 SVPWM導通改良 42

第６章反電動勢分析與改善 47

6.1 無刷馬達反電動勢量測 47

6.2 反電動勢諧波成份分析 49

6.3 SVPWM對應諧波訊號改善 50

第７章測試設備與測量結果 54

7.1 馬達測試設備介紹 54

7.2 硬體電路介紹 55

7.3 效率比較、轉矩輸出 56

7.3.1 效率比較 57

7.3.2 轉矩比較 60

7.4 噪音量測 63

第８章結論 67

8.1 結論 67

8.2 未來展望 67

參考文獻 68

參考文獻

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指導教授

徐國鎧(Kuo-Kai Shyu)

審核日期

2015-8-28

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