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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林輝政 | |
dc.contributor.author | Shih-Yu Yang | en |
dc.contributor.author | 楊適宇 | zh_TW |
dc.date.accessioned | 2021-06-08T02:11:54Z | - |
dc.date.copyright | 2016-02-16 | |
dc.date.issued | 2016 | |
dc.date.submitted | 2016-01-21 | |
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Odgaard, 'Repetitive model predictive approach to individual pitch control of wind turbines,' in Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on, 2011, pp. 3664-3670. [43] S. T. Navalkar, J. W. van Wingerden, E. van Solingen, T. Oomen, and G. A. M. van Kuik, 'Subspace Predictive Repetitive Control for wind turbine load alleviation using trailing edge flaps,' in American Control Conference (ACC), 2014, 2014, pp. 4422-4427. [44] S. T. Navalkar, E. van Solingen, and J. W. van Wingerden, 'Wind Tunnel Testing of Subspace Predictive Repetitive Control for Variable Pitch Wind Turbines,' Control Systems Technology, IEEE Transactions on, vol. PP, pp. 1-1, 2015. [45] I. Houtzager, J. W. V. Wingerden, and M. Verhaegen, 'Wind turbine load reduction by rejecting the periodic load disturbances,' Wind Energy, vol. 16, pp. 235-256, 2013. [46] E. A. Bossanyi, 'Individual Blade Pitch Control for Load Reduction,' Wind Energy, vol. 6, pp. 119-128, 2003. [47] E. A. Bossanyi, 'Further Load Reductions with Individual Pitch Control,' Wind Energy, vol. 8, pp. 481-485, 2005. [48] J. Jonkman, S. Butterfield, W. Musial, and G. Scott, 'Definition of a 5-MW Reference Wind Turbine for Offshore System Development ' National Renewable Energy Laboratory2009. [49] C. D. Johnson, 'Disturbance-Accommodating Control; An Overview,' in American Control Conference, 1986, 1986, pp. 526-536. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/19660 | - |
dc.description.abstract | 本論文推導出預測直接扭力控制法,主要應用於永磁同步發電機。普遍而言,永磁同步發電機的控制需要很高的取樣頻率以給予轉換器開關指令,然而若是用本論文推展出來的預測扭力控制,得以在取樣的當下計算出三個最佳的開關切換時間與合適的開關切換組合。與傳統的永磁同步機控制方法相比,利用此控制方法能有效減少永磁同步發電機的電機扭力漣波與定子磁通量的振幅,因此,使用本論文所提出的預測直接扭力控制法,可以有效降低取樣頻率。在永磁同步機系統中,背對背轉換器中間的電容需要維持固定電壓,此電壓能提供發電機側的轉換器順利運作,故本論文亦利用電網電壓方位向量控制法來穩定電容的電壓,該方法可決定電網側轉換器的開關切換,此外,該控制方法還可決定由電容流向電網實功與虛功。另一方面,葉片控制在現代風力發電機中是相當重要的議題,葉片控制的目的在於當風速過大時,要將風機轉速維持在額定轉速。由於風力發電機運行時,葉片會因位置不同受到風速與重力的影響,而承受到週期性負載,如此一來容易造成葉片的疲勞與損壞。本研究的葉片控制技術包含固定轉速與消除葉片的彎曲力矩振盪兩方面的結合:使用擾動建議控制法來調整風機轉速,再透過d-q 軸轉換,將葉片的彎曲力矩在d-q 座標中進行分析,由此發展出獨立葉片控制。 | zh_TW |
dc.description.abstract | This thesis concerns the application of the predictive direct torque control (PDTC) method to a permanent magnet synchronous generator (PMSG). In classical methods for controlling a PMSG, the sampling frequency of the controller must be precisely determined. However, the use of PDTC in this study enables three optimal duty cycles to be predicted at the moment of sampling, significantly reducing the ripple of the electromagnetic torque and the amplitude of the stator flux below those caused by conventional control methods. Therefore, the new method allows a lower sampling frequency than the traditional method. To operate the machine side converter, the DC bus capacitor voltage must be maintained within an acceptable and stable range. Grid voltage oriented vector control was used to control the active power and the reactive power, which are delivered from the DC bus capacitor, as well as to control the voltage. On the other hand, for the modern wind turbine, the pitch control is an every important issue. The purpose of the pitch control is to maintain the rotor speed at the rated speed when the wind speed is above rated wind speed. The wind turbine’s blades are exerted the periodic loads from the wind and gravity, which may easy to let the wind turbine’s blade fatigue. The pitch control method that includes the speed regulation and reduction of bending moment’s oscillation is introduced in this thesis. The disturbance accommodating control handles the speed regulation problem. Moreover, by analysis the bending moment of the blade under the d-q transformation, the individual pitch control reduces the oscillation of bending moment. | en |
dc.description.provenance | Made available in DSpace on 2021-06-08T02:11:54Z (GMT). No. of bitstreams: 1 ntu-105-F00525016-1.pdf: 3492232 bytes, checksum: 67499d4cb34bca0e7020e892c361aca2 (MD5) Previous issue date: 2016 | en |
dc.description.tableofcontents | 口試委員會審定書
誌謝 i 中文摘要 ii ABSTRACT iii ABOUT THE AUTHOR iv CONTENTS v LIST OF FIGURES vii LIST OF TABLES xii NOMENCLATURE xiii Chapter 1 Introduction 1 1.1 General Background Information 1 1.2 Literature Reviews 6 1.3 Contribution of this Article 9 Chapter 2 Wind Turbine Model Implemented by FAST 11 2.1 Wind Turbine Modeled by FAST 11 2.2 XFOIL for Calculating the Aerodynamic Properties of the Wind Turbine Blade 15 Chapter 3 Control of PMSG System 17 3.1 Space Vector and Transformation between Each Reference Frame and the Back-to-back Converter 18 3.1.1 Back-to-back converter 21 3.2 DC Bus Voltage Controlled by Grid Side Converter 26 3.2.1 Phase locked loop (PLL) 27 3.2.2 Pulse width modulation (PWM) 28 3.2.3 Grid voltage oriented vector control 34 3.3 Model of Permanent Magnet Synchronous Generator 38 3.3.1 Non-salient and salient pole PMSG model 38 3.3.2 PMSG system implemented by SimPowerSystems 41 3.4 Direct Control for PMSG 44 3.4.1 Conventional direct torque control of the PMSG 44 3.4.2 Predictive direct torque control of the PMSG 54 3.5 Comparison between Conventional and Predictive Direct Torque Control 60 3.6 Application of Predictive Direct Torque Control on Wind Turbine 65 Chapter 4 Individual Pitch Control Development 73 4.1 Wind Turbine Speed Regulation in Region Three 73 4.1.1 State and disturbance estimation 75 4.1.2 Disturbance accommodating control 80 4.2 Load Reduction by Using Individual Pitch Control 83 4.2.1 Park transformation (d-q transform) 84 4.2.2 The PI controller and the oscillator designed for the bending moment oscillation reduction. 88 4.2.3 Simulation comparison with different pitch controller 102 Chapter 5 Conclusions 111 5.1 Future Work 112 REFERENCE 113 APPENDIX 117 | |
dc.language.iso | en | |
dc.title | 永磁同步發電機之預測直接扭力控制與風力發電機之獨立葉片控制 | zh_TW |
dc.title | Predictive Direct Torque Control of the PMSG and Individual Pitch Control of Wind Turbine | en |
dc.type | Thesis | |
dc.date.schoolyear | 104-1 | |
dc.description.degree | 博士 | |
dc.contributor.oralexamcommittee | 吳元康,李雅榮,江茂雄,李坤彥,黃心豪 | |
dc.subject.keyword | 電網電壓方位向量控制,獨立葉片控制,永磁同步發電機,預測直接扭力控制,風力發電機, | zh_TW |
dc.subject.keyword | Grid voltage oriented vector control,individual pitch control,permanent magnet synchronous generator,predictive direct torque control,wind turbine, | en |
dc.relation.page | 119 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2016-01-22 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
顯示於系所單位: | 工程科學及海洋工程學系 |
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