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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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 1 魚形座標轉換技術在感應馬達之變頻器脈寬調變性能比較上之應用

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 1 應用數位訊號處理器於永磁同步馬達速度控制之研究 2 航空用數位馬達致動控制器之關鍵技術研究 3 切換式磁阻馬達換相位置估測於廣域控制之研究 4 多迴路切換磁阻馬達控制器 5 切換式磁阻馬達之伺服控制晶片設計 6 三相波寬調變變頻器驅動感應馬達之長導線與共模電壓問題之探討 7 單相感應發電機與單相感應馬達之特性分析 8 內藏式馬達高速主軸之熱傳分析 9 電動輪椅馬達控制器之研製 10 變頻器驅動對交流馬達軸電流改善之研究 11 六脈波變頻器之諧波分析與改善方法 12 電流源型變頻器研製 13 隨機脈波寬調變技術在微步進馬達控制之研究 14 自走車介面控制之研究 15 泛用型數位變頻器

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