Predictive Control of Three Phase AC/DC Converters

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138 LIST OF SYMBOLS AND ABBREVIATIONS Abbreviation Description Definition AFE Active Front End page 1 CSF-P-DPC Constant Switching Frequency Predictive Direct page 50 Power Control DC-link Direct Current link page 10 DPC-SVM Direct Power Control with Space Vector Modulator page 25 DSP Digital Signal Processing page 42 FL-VSF-P-DPC Switching Frequency Limited VSF-P-DPC page 49 HC-VSF-P-DPC VSF-P-DPC with Current Harmonics control page 46 IGBT Insulated-Gate Bipolar Transistor page 9 LPF Low Pass Filter page 31 MPC Model Predictive Control page 42 PCC αβ Predictive Current Control in αβ coordinates page 125 PCC dq Predictive Current Control in dq coordinates page 127 PI Proportional-Integral Controller page 21 SO Symmetry Optimum design method page 25 ST-DPC Switching Table based Direct Power Control page 21 VF Virtual Flux page 28 VF-CSF-P-DPC Virtual Flux based Constant Switching Frequency page 58 Predictive Direct Power Control VFOC Virtual Flux Oriented Control page 25 VOC Voltage Oriented Control page 17 VSF-P-DPC Variable Switching Frequency Predictive Direct page 42 Power Control VSC Voltage Source Converter page 7
List of Figures 1.1 Conjunction between predictive control and other methods . . . . . . 2 1.2 Classification of predictive control methods used in power electronics . 3 2.1 Construction of space vector . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Scheme of VSC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.3 Switching states of VSC . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.4 Representation of VSC AC-side voltage as space vector . . . . . . . . 10 2.5 Single phase representation of VSC . . . . . . . . . . . . . . . . . . . . 10 2.6 Phasor diagrams of VSC . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.7 Block scheme of VSC in natural coordinates . . . . . . . . . . . . . . . 12 2.8 Block scheme of VSC in stationary coordinates . . . . . . . . . . . . . 13 2.9 Block scheme of VSC in rotating dq coordinates . . . . . . . . . . . . 14 3.1 Basic block scheme of VOC . . . . . . . . . . . . . . . . . . . . . . . . 18 3.2 Vector diagram of VOC . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.3 Block diagram of active current control loop in VOC . . . . . . . . . . 19 3.4 Step response of active current control loop in VOC . . . . . . . . . . 19 3.5 Step response of discretized active current control loop in VOC . . . . 20 3.6 Block diagram of DC-link voltage control loop in VOC . . . . . . . . . 20 3.7 Step response of DC voltage control loop in VOC . . . . . . . . . . . . 21 3.8 Block scheme of ST-DPC . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.9 Sector selection for ST-DPC and VF-ST-DPC . . . . . . . . . . . . . . 23 3.10 Block scheme of DPC-SVM . . . . . . . . . . . . . . . . . . . . . . . . 26 3.11 Block diagram of active power control loop in DPC-SVM . . . . . . . 26 3.12 Step response of active power control loop in DPC-SVM . . . . . . . . 27 3.13 Step response of discretized active power control loop in DPC-SVM . 27 3.14 Block diagram of DC-link voltage control loop in DPC-SVM . . . . . 28 3.15 Step response of DC voltage control loop in DPC-SVM . . . . . . . . 28 3.16 Scheme of VSC with AC side presented as a virtual AC motor . . . . 30 3.17 Line voltage and virtual flux coordinates transformation . . . . . . . . 30 139
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WARSAW UNIVERSITY OF TECHNOLOGY Fac
Page 5 and 6:
Contents Contents i 1 Introduction
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CONTENTS iii List of Symbols and Ab
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Chapter 1 Introduction AC/DC Voltag
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Based Trajectory Based Deadbeat Con
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5 which properties are deteriorated
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Chapter 2 Voltage Source Converter
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(Sa=1, Sc=0) UP2 (Sa=1, UP1 Sb=1, S
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IL UL jωLIL UL jωLIL 2.2. MATHEMA
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ILα 1 sL+RSα - ULα 32IDC 1 sCUDC
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2.3. SUMMARY 15 2.3 Summary In this
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Iqref Idref ILq ILd ILq φ uLab UDC
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UDC Filter 20 CHAPTER 3. CONTROL ST
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Qref dP dQ uLab UDC Sabc 22 CHAPTER
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24 CHAPTER 3. CONTROL STRATEGIES FO
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Qref Pref uLab UDC Sabc 26 CHAPTER
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UDC Filter 28 CHAPTER 3. CONTROL ST
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ILq φ ωL 30 CHAPTER 3. CONTROL ST
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Lα 32 CHAPTER 3. CONTROL STRATEGIE
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Page 51 and 52:
Chapter 4 Predictive Direct Power C
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4.3. VARIABLE SWITCHING FREQUENCY P
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UPdqUDC Qref UDCSabc uLab iLab 4.3.
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UPdqUDC UDCSabc uLab iLab 4.4. CURR
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UPdqUDC Qref Pref UDCSabc uLab iLab
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4.6. CONSTANT SWITCHING FREQUENCY P
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PP1 fq1 fq2 PP4 PP5 PP6 PP3 fp3 fp3
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Sb Sc Sa Sb Sa Sc Sb Sa 4.6. CONSTA
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fqi fpi Qref Sabc 4.6. CONSTANT SWI
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4.7. VF BASED CSF - PREDICTIVE DIRE
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Qref fpi Sabc iLab 4.7. VF BASED CS
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4.8. SIMULATION RESULTS 63 200 150
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4.8. SIMULATION RESULTS 67 Mag (% o
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4.9. SUMMARY 75 Control Method t se
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Chapter 5 Investigations of Control
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5.1. ROBUSTNESS TO PARAMETERS MISMA
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Sabc UDC UPαβ UPαβ Lest Lest UP
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5.4. LINE VOLTAGE DISTURBANCES 83 (
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5.4. LINE VOLTAGE DISTURBANCES 85 (
Page 97 and 98: 5.4. LINE VOLTAGE DISTURBANCES 87 C
Page 99 and 100: Chapter 6 Experimental Study Experi
Page 101 and 102: 6.1. STEADY STATE OPERATION 91 (a)
Page 103 and 104: 6.1. STEADY STATE OPERATION 93 Cont
Page 105 and 106: 6.2. TRANSIENT OPERATION 95 (a) ST-
Page 111 and 112: 6.3. OPERATION WITH LOW SWITCHING F
Page 117: 6.4. SUMMARY 107 Control Method t s
Page 120 and 121: 110 CHAPTER 7. SUMMARY AND FINAL CO
Page 122 and 123: 112 BIBLIOGRAPHY [11] K. Hyosung an
Page 124 and 125: 114 BIBLIOGRAPHY [38] A. Nasiri,
Page 126 and 127: 116 BIBLIOGRAPHY [66] F. Morel, J.
Page 128 and 129: 118 BIBLIOGRAPHY 13. A. Lopez de He
Page 131 and 132: Appendix A Coordinate transformatio
Page 133 and 134: q β A.2. ROTATING SYSTEM 123 A.2 R
Page 135 and 136: Appendix B Predictive Current Contr
Page 137 and 138: ∆ILαβP6 ∆ILαβP5 Figure B.2:
Page 139: Figure B.4: Vector diagram of predi
Page 142 and 143: 132 APPENDIX C. PREDICTIVE DIRECT P
Page 145 and 146: List of Symbols and Abbreviations S
Page 147: 137 Symbols Description Definition
Page 151 and 152: LIST OF FIGURES 141 5.3 Line curren
Page 153: LIST OF TABLES 143 B.2 An example o
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Predictive Control of Three Phase AC/DC Converters

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