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研究生:林琦修
研究生(外文):Chi-Hsiu Lin
論文名稱:魚形法在感應馬達變頻器切換模態設計及轉矩漣波改善之應用
論文名稱(外文):Application of Fish Method to Inverter Switching Patterns Design and Torque Ripple Reduction for Induction Motors
指導教授:林鐘烲
指導教授(外文):Jong-Lick Lin
學位類別:碩士
校院名稱:國立成功大學
系所名稱:工程科學系碩博士班
學門:工程學門
學類:綜合工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:113
中文關鍵詞:魚座標軸離線式同步切換模態線上式非同步切換模態電流魚磁通魚魚形法理想旋轉變壓器
外文關鍵詞:fish methodfish coordinateideal rotating transformeron-line asynchronous switching patternoff-line synchronous switching patterncurrent fishflux fish
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一般三相感應馬達是利用切換式電力轉換器驅動,故電力轉換器之切換模態可直接影響感應馬達的轉動效能,包含:轉矩漣波(脈動轉矩)、功率損失、峰值電流與噪音等。因此,如何調整切換模態使得感應馬達的轉動效能達到最佳化,是一個重要的研究主題。
本論文係利用理想旋轉變壓器元件(IRTF: Ideal Rotating TransFormer),建立新的感應馬達等效電路,並與傳統等效電路相比較後,得知兩電路相互等價。
本論文利用魚形法探討電力轉換器之切換模態,其中切換模態乃架構在簡單的感應馬達等效電路(AFM: Analytic Flux Model)上,將等效電路之定子交鏈磁通軌跡經由旋轉座標轉換後,可得到磁通魚,此“磁通魚”唯一對應“一組切換模態”。當磁通魚形框面積愈小時,感應馬達之轉矩漣波就愈小。
根據魚形法可設計新式切換模態:包含離線式同步切換模態與線上式非同步切換模態,以改善電流漣波與轉矩漣波,使感應馬達轉動達到最佳化。由於離線式同步切換模態為開迴路控制;然而線上式非同步切換模態為閉迴路控制,可以應付DC電壓 之變動,故比離線式同步切換模態優越。
本論文以軟體Simulink模擬新式切換模態,並與傳統SPWM切換模態相比較。在實作方面則擬以DSP微處理器設計控制器,實現上述兩種不同的新式切換模態,進而改善感應馬達的電流漣波與轉矩漣波,並與傳統SPWM切換模態實作比較。最後,根據模擬結果得以驗証理論的正確性。
In general, a three-phase induction motor (IM) is driven by a switching power converter. Then the performances of IM, including torque ripple, power loss, peak current and acoustic noise etc. are related directly to the switching pattern. Therefore, how to optimize the rotating performances of an IM by adjusting the switching pattern becomes an important issues.
In this thesis, a novel equivalent circuit of IM using the ideal rotating transformer (IRTF) is proposed. It is interesting to note that the novel equivalent circuit is identical to the traditional one after detailed analysis..
It is aimed to study the switching pattern of power converter by the fish method in this paper. On the basis of the analytic flux model (AMF), the switching pattern of the inverter is investigated. Then the flux fish, related to a unique switching pattern, can be obtained after a coordinate transformation of the stator flux. It is worthy to note that lower torque ripple of IM is concerned with a smaller, rectangular looking flux fish.
Based on the fish method, the novel switching patterns, including the off-line synchronous switching pattern and the on-line asynchronous switching pattern, are designed to reduce the current ripple and torque ripple. Then the optimal performances of IM can be obtained. Among them, the off-line synchronous switching pattern is related to the open-loop control. On the other hand, the on-line asynchronous switching pattern, regarding of the varying DC-link voltage , is related to closed-loop control.
The novel switching patterns and the traditional SPWM switching patterns are both simulated by Simulink. Some comparison results are shown for comparisons in the thesis. Moreover, it is desired to implement two types of the novel switching patterns to reduce the current ripple and torque ripple by a DSP microprocessor controller in the near future. In addition, the traditional SPWM switching patterns will also be implemented for comparison. Finally, the validation of the fish method will be successfully verified by simulation results.
中文摘要 I
英文摘要 II
目錄 ………….. III
圖表目錄 V
第一章 緒論 1-1
1.1 概述 1-1
1.2 研究動機 1-1
1.3 論文內容 1-2

第二章 感應馬達的建模 2-1
2.1 傳統等效電路 2-1
2.2 座標轉換 2-3
2.3 理想的旋轉變壓器 2-4
2.4 IRTF元件中的電磁轉矩 2-5
2.5 建立感應馬達IRTF等效電路 2-7
2.6 等效電路圖2.6之驗証 2-7
2.7 轉矩方程的比較 2-9
2.8 系統模擬 2-12

第三章 魚形法 3-1
3.1 系統描述 3-1
3.2 電壓與交鏈磁通 3-6
3.3 磁通魚的定義 3-7
3.4 電流魚的定義 3-12
3.5 交鏈磁通的傅利葉分析 3-16
3.6 轉矩方程式在魚座標上之探討 3-17
3.7 磁通魚的量測特性 3-20
3.8 結論 3-21

第四章 離線式同步切換模態 4-1
4.1 新式切換模態之設計原理 4-1
4.2 離線式同步切換模態 4-5
4.3 開關狀態個數: 4-8
4.4 中斷間隔個數: 4-22
4.5 中斷間隔的位置配置 4-24
4.6 傳統SPWM切換模態 4-30
4.7 切換狀態的脈衝個數: 4-31
4.8 魚形應用模擬結果 4-35
4.9 切換模態之比較 4-38
4.10 結論 4-40

第五章 線上式非同步切換模態 5-1
5.1 線上式切換法則設計 5-1
5.2 切換邊界定義 5-2
5.3 電壓變動之模擬 5-5
5.4 切換模態之比較 5-13
5.5 結論 5-13

第六章 結論與未來展望 6-1
6.1 結論 6-1
6.2 未來展望 6-1

參考文獻 ref-1
[Bos86]Bose, B. K., Power Electronics and AC Drives, Prentice-Hall, 1986.
[Cha91]Chapman, Stephen J., Electric Machinery Fundamentals, McGraw-Hill Publishing company, 1991.
[DoN88]Doncker, R. W. De and D. W. Novotny, “The Universal Field Oriented Controller,” IEEE PESC, pp. 450-456, 1988.
[KSV92]Kassakian, John G., Martin F. Schlecht and George C. Verghese, Principles of Power Electronics, Addison-Wesley Publishing Company, 1992.
[LiW00]Lin, J.-L. and T.-Y. Wang, Dead-Time Compensation in PWM Inverters and Silding Mode Control Application to Boost Converters and Sinusoidal Oscillators, NCKU Master Thesis, 2000.
[LiS01]Lin, J.-L. and L.-G. Shiau, Robust Speed and Position Control for a High Performance Induction Motor Driver System, NCKU Ph. D. Thesis, 2001.
[LiY99]Lin, J.-L. and Y.-Z. Ye, Passivity-Based Speed Control for Induction Motor Drives With Dead-Time Compensation, NCKU Master Thesis, 1999.
[Mat96]The Math Works, Inc., Matlab User’s Guide, Natick, Mass., 1996.
[MuT90]Murata, Toshiaka and Takeshi Tshchiya, “Vector Control for Induction Machine on the Application of Optimal Control Theory,” IEEE, pp. 283-290, 1990.
[OkS68]O’kelly, D. and S. Simmons, Introduction to Generalized Electrical Machine Theory, McGraw-Hill Publishing Company, 1968.
[Vel95]Veltman, A., “Fish Method Based On-Line Optimal Control for PWM Rectifiers,’’ IEEE PESC, pp. 549-555, 1995.
[Vel94]Veltman, A., The Fish Method, Interaction between AC-Machines and Switching Power Converters, Ph. D. thesis, Delft University of Technology, 1994.
[VeP93]Veltman, A. and P. P. J. van den Bosch, ‘’The Fish Method: An Analytical Tool for Optimizing Converter-Machine Performance,’’ Power Conversion Conference, pp. 575-580, 1993.
[VBG93]Veltman, A. and P. P. J. van den Bosch and R. J. A. Gorter, “On-Line Optimal Switching Patterns for 2-level and 3-level Inverters Using the Fish Method,’’ IEEE PESC, pp. 1063-1069, 1993.
[VBG94]Veltman, A. and P. P. J. van den Bosch and R. J. A. Gorter, “Fish Method Based State Estimation for Controlling Inverter Driven Machines,’’ IEEE PESC, pp. 758-762, 1994.
[WOM96]Wit, Paul A. S. De, Romeo Ortega and Iven Mareels, “Indirect Field-oriented Control of Induction Motors is Robustly Stable,” Automatica, pp. 1393-1402, 1996.
[劉許93]劉昌煥、許溢适, AC伺服系統的理論與設計實務, 文笙書局, 1993.
[徐賴02]徐國鎧、賴秋庚、蔡耀文、楊定一、鍾昌玟 “無刷直流馬達直接轉矩控制方法之轉矩漣波改善,’’ Automatic Control Conference, pp. 1165-1170, 2002, 2002.
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