研究生: |
黃勁嘉 Jing-Jia Huang |
---|---|
論文名稱: |
小容量直流無刷電動機的驅動控制電路設計 Design of Smart Control for Small Capacity DC Brushless Motor used in Electric Fan |
指導教授: |
蕭弘清
Horng-Ching Hsiao 蕭鈞毓 Chun-yu Hsiao |
口試委員: |
黃忠偉
Jong-Woei Whang 胡能忠 Neng-Chung Hu |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電機工程系 Department of Electrical Engineering |
論文出版年: | 2018 |
畢業學年度: | 106 |
語文別: | 中文 |
論文頁數: | 70 |
中文關鍵詞: | 直流無刷電動機 、家用風扇 、脈波寬度調變 、數位信號處理器 |
外文關鍵詞: | brushless DC motor, household electric fan, pulse width modulation, digital signal processor |
相關次數: | 點閱:359 下載:0 |
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現今的電氣設備中,廣泛地使用各類不同容量的電動機,用電量的占比也最高,大至工商業動力來源,小至生活中的3C產品與小家電等,因此為電動機設計合適的控制功能,除了可以提高產品的性能及效用外,也能提高產品的能源效率。
家用電風扇使用直流無刷電動機逐漸成為趨勢,而直流無刷電動機具有體積小、效率高、壽命長與雜音低等優點,適合使用在需求量龐大的家用電風扇產品,因此更需要研發合適的風扇控制技術。
本文探討家用風扇的三相直流無刷電動機驅動系統研製,藉由直流無刷電動機結構及數學模式分析,探討開迴路控制及脈波寬度調變策略,使直流無刷電動機達到可以任意控制風扇運轉性能,模擬舒適的自然風速感覺,並且可以由人工設定規劃不同的風速變換週期,做為未來擬自然風研究的有效工具。
本文所研製的系統以數位信號處理器TMS320F28069為控制核心,用來執行家用風扇的控制。最後以實驗結果驗證其可行性及正確性。
Nowadays, motors are the most widely used in various electrical equipment including modern 3C products, appliances, and industrial mechanical rotating machines. The energy consumption of motors is also the highest ratio among all electrical loads. Therefore, giving motors appropriate effective and smart control functions can improve products' performance and energy efficiency.
Brushless DC motors have many advantages such as smaller dimension and volume, higher efficiency, longer life time and lower noise. It is urgent need and very suitable to develop a smart control means for Brushless DC motors which have tremendous application in electric fans.
This thesis proposed the design and implementation of the drive system for three-phase brushless DC motors. The structure and mathematical model of DC brushless motors are discussed first. Secondly, we will investigate and construct an open-loop control scheme due to cost consideration and using pulse-width-modulation strategy for controlling speeds of the DC brushless motors in order to provide comfortable and natural-like wind operating characteristics.
A digital signal processor, TMS320F28069, is used as the core control part of the fan. A commercial electric fan is used for comparison and performances evaluations between conventional constant speed technique and the variable speed control strategy proposed. Finally, the experimental results verified the feasibility and correctness of the driving system.
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