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Contents 1 Introduction 1 1.1 Introduction to Electromagnetic Compatibility . . . . . . . . . . . . . . . 1 1.2 EMI related to power converters . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 Instruments for EMI measurement . . . . . . . . . . . . . . . . . . . . . . 5 1.4 EMC mitigation strategies . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.5 Literature review and background . . . . . . . . . . . . . . . . . . . . . . 10 1.6 Existing HF models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.7 Aims and objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.8 Structure of the thesis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 2 Experimental implementation of matrix converter drive 16 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.2 Introduction on Matrix converters . . . . . . . . . . . . . . . . . . . . . . 16 2.2.1 Modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.2.2 Commutation strategies . . . . . . . . . . . . . . . . . . . . . . . . 19 2.3 Matrix converter chosen for the experimental tests . . . . . . . . . . . . . 21 2.3.1 Hardware improvements . . . . . . . . . . . . . . . . . . . . . . . 23 2.4 Controller boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 2.5 Measurement transducers . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 2.6 Motor drive and control technique . . . . . . . . . . . . . . . . . . . . . . 26 2.7 Experimental test at full voltage . . . . . . . . . . . . . . . . . . . . . . . . 28 3 HF Modelling Strategy 29 iii
CONTENTS 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.2 Impedance measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.3 Genetic Algorithms and their use for structural identification . . . . . . . 31 3.4 HF model simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4 Motor and matrix converter model 39 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 4.2 HF motor modelling with Casadei’s model . . . . . . . . . . . . . . . . . 39 4.2.1 Difficulty to find adequate models . . . . . . . . . . . . . . . . . . 40 4.3 Suggested HF Motor model . . . . . . . . . . . . . . . . . . . . . . . . . . 41 4.3.1 Attempt to reduce optimizing time . . . . . . . . . . . . . . . . . . 43 4.3.2 Matching with impedance measurements . . . . . . . . . . . . . . 44 4.4 Matrix converter model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 4.4.1 Input and output CM impedance characterization . . . . . . . . . 48 4.4.2 Input and output DM impedance characterization . . . . . . . . . 50 4.5 GA to model other components . . . . . . . . . . . . . . . . . . . . . . . . 51 4.5.1 Modelling of the LISN . . . . . . . . . . . . . . . . . . . . . . . . . 51 4.6 Cable model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 5 EMI Measurements 56 5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 5.2 Requirements for conducted EMI . . . . . . . . . . . . . . . . . . . . . . . 57 5.3 Probe calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 5.3.1 Calibration procedure . . . . . . . . . . . . . . . . . . . . . . . . . 59 5.4 Experimental current measurements: CM & DM . . . . . . . . . . . . . . 61 5.5 Actual measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 5.5.1 EMI Comparison with a two level inverter . . . . . . . . . . . . . 67 6 Simulations of input and output system EMI 71 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 6.2 Implementation of Matrix converter Modulation in Saber simulator . . . 71 iv
Page 1 and 2: EMI Filter Design for Matrix Conver
Page 3: that may involve long Finite Elemen
Page 7 and 8: CONTENTS B External DLL 118 B.1 C c
Page 9 and 10: LIST OF FIGURES 2.10 Measurement at
Page 11 and 12: LIST OF FIGURES 6.9 CM Conducted EM
Page 13 and 14: LIST OF FIGURES 8.18 Input CM and D
Page 15 and 16: LIST OF TABLES 7.9 Attenuation for
Page 17 and 18: CHAPTER 1: INTRODUCTION the receive
Page 19 and 20: CHAPTER 1: INTRODUCTION Abs. Magnit
Page 21 and 22: CHAPTER 1: INTRODUCTION Figure 1.5:
Page 23 and 24: CHAPTER 1: INTRODUCTION • Make th
Page 25 and 26: CHAPTER 1: INTRODUCTION Figure 1.10
Page 27 and 28: CHAPTER 1: INTRODUCTION the filters
Page 29 and 30: CHAPTER 1: INTRODUCTION experimenta
Page 31 and 32: CHAPTER 2 Experimental implementati
Page 33 and 34: CHAPTER 2: EXPERIMENTAL IMPLEMENTAT
Page 45 and 46: CHAPTER 3: HF MODELLING STRATEGY im
Page 47 and 48: CHAPTER 3: HF MODELLING STRATEGY ci
Page 49 and 50: CHAPTER 3: HF MODELLING STRATEGY Re
Page 51 and 52: CHAPTER 3: HF MODELLING STRATEGY De
Page 53 and 54: CHAPTER 3: HF MODELLING STRATEGY C2
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CHAPTER 4: MOTOR AND MATRIX CONVERT
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5.1 Introduction CHAPTER 5 EMI Meas
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CHAPTER 5: EMI MEASUREMENTS Level:
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CHAPTER 5: EMI MEASUREMENTS will tr
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CHAPTER 5: EMI MEASUREMENTS iA iB I
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CHAPTER 5: EMI MEASUREMENTS I[dBµA
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CHAPTER 5: EMI MEASUREMENTS Motor c
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CHAPTER 5: EMI MEASUREMENTS I[dBµA
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CHAPTER 5: EMI MEASUREMENTS CM Volt
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CHAPTER 6: SIMULATIONS OF INPUT AND
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78 Figure 6.7: Complete HF model Po
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CHAPTER 7 Filter Design and realiza
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CHAPTER 7: FILTER DESIGN AND REALIZ
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CHAPTER 8 Filter realization and ex
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CHAPTER 8: FILTER REALIZATION AND E
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CHAPTER 9 Conclusions and Further w
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APPENDIX A Scientific Publications
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B.1 C code APPENDIX B External DLL
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APPENDIX B: EXTERNAL DLL Tseq_Pulse
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APPENDIX B: EXTERNAL DLL B.2 MAST c
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References [1] RTCA Incorporated. R
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REFERENCES nious drives. In Europea
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REFERENCES [48] D.F. Knurek. Reduci
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