研究生: |
許尚文 Shang-Wen Hsu |
---|---|
論文名稱: |
六相永磁式同步電動機之設計及控制 Design and Control of Six-Phase Permanent-Magnet Synchronous Motors |
指導教授: |
黃仲欽
Jonq-Chin Hwang |
口試委員: |
葉勝年
Sheng-Nian, Yeh 吳瑞南 Ruay-Nan, Wu 王順源 none 陳慕平 none |
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: | 2006 |
畢業學年度: | 94 |
語文別: | 中文 |
論文頁數: | 102 |
中文關鍵詞: | 電動機設計 、二臂式直流直流功率轉換器 、數位訊號處理器 、六相永磁式同步電動機 、Flux2D |
外文關鍵詞: | Two-leg boost dc-dc power converter, finite-element field analysis software FL, six-phase inverter, six-phase permanent-magnet synchro-, DSP |
相關次數: | 點閱:388 下載:20 |
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本文旨在設計及控制六相永磁式同步電動機,並針對六相永磁式同步電動機發生部分繞組斷線故障時,亦能減速繼續運轉,以提供其運轉可靠度。在直流-直流功率轉換器方面採用二臂式昇壓型架構,將蓄電池之直流電壓48V轉換為可變之直流電壓48至100V範圍,且此電壓隨電動機之轉速而調整,可減少低速電動機抖動現象。二臂式直流-直流功率轉換器不僅可提高直流鏈電壓,亦能降低蓄電池之電流漣波,提高蓄電池使用效率及壽命。六相永磁式同步電動機採用雙三相座標系統轉換及轉子磁場導向控制,完成轉速及電流閉迴路控制,以提高效率及轉速響應。另電動機之轉子位置及速度回授採用電磁旋轉編碼器檢測位置及速度回授信號,其價格便宜、安裝容易且體積小,具有商品化的價值。
本文利用磁路分析套裝軟體FULX2D作六相外轉式表面型永磁式同步電動機之磁路及感應電勢分析,並驗證此電機設計正確性。本系統以數位訊號處理器TMS320LF2407A為控制核心,其六相永磁式同步電動機的轉速及電流閉迴路控制及二臂式直流-直流功率轉換器之控制,皆由軟體程式完成,以減少電路元件。本文已完成250 W六相同步永磁式電動機驅動系統雛型,並由實測結果驗證本文系統之可行性。
This thesis presents the design and implement of six-phase permanent-magnet synchronous motors. The double three-phase winding motor can be operated in lower speed when one winding breaks down. Two-leg boost dc-dc power converter is used to convert the voltage of batteries from 48V to dc-link voltage between 48V and 100V. Depending on the speed of motor, the dc-link voltage can be automatically adjusted to improve the shake of motor in low speed. It thus can not only raise dc-link voltage, but also reduce current harmonics of battery to increase its efficiency and life. Coordinate transformation and rotor-flux oriention are used in the closed-loop control of speed and current to increase the efficiency and speed response. In addition, the speed/position of rotor is detected by using cheep and small magnetic rotary encoder.
The flux and induction voltage of synchronous motor are analyzed by the two-dimensional finite-element field analysis software FLUX2D. A digital signal processor TMS320LF2407A is used as the control core. The control of motor and power converter is accomplished by software for cost reduction. A prototype of 250W six-phase synchronous motor is developed. Simulation and experimental results are given to justify the analysis.
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