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CHAPTER 5: EMI MEASUREMENTS I[dBµA] I[dBµA] 80 70 60 50 40 30 20 10 0 q = 0.6 q = 0.7 q = 0.8 Limit Cat L 0.1 1 10 Frequency [MHz] 90 80 70 60 50 40 30 20 Figure 5.15: DM EMI at Matrix converter output varying q 10 q = 0.6 q = 0.7 0 −10 q = 0.8 Limit Cat L 0.1 1 10 Frequency [MHz] Figure 5.16: CM EMI at Matrix converter output varying q 5.5.1 EMI Comparison with a two level inverter It could be interesting to compare the EMI emissions <strong>of</strong> the Matrix Converter with the ones <strong>of</strong> a traditional Two Level Converter. In order to do so, the same motor has been connected to a 15kW two level inverter switching at 12.5kHz (same as the matrix converter) with symmetric space vector modulation. The supply voltage is once again 240Vrms at 50Hz, the modulation index is 0.7 and the output frequency is 100Hz. The same EMI measurements have been performed, CM and DM, both at the input and at the output, and they are reported in the following figures. Fig. 5.17 and 5.18 report the emissions measured at the input while Fig. 5.19 and 5.20 show the emissions measured at the converter output. 67
CHAPTER 5: EMI MEASUREMENTS I[dBµA] I[dBµA] I[dBµA] 80 60 40 20 0 −20 Matrix converter Two level drive Limit Cat B −40 0.1 1 10 Frequency [MHz] 100 80 60 40 20 Figure 5.17: Input DM EMI comparison for Matrix and Two-level converters 0 Matrix converter Two level drive Limit Cat B −20 0.1 1 10 Frequency [MHz] 80 70 60 50 40 30 20 10 Figure 5.18: Input CM EMI comparison for Matrix and Two-level converters 0 Matrix converter −10 −20 Two level drive Limit Cat B 0.1 1 10 Frequency [MHz] Figure 5.19: Output DM EMI comparison for Matrix and Two-level converters 68
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EMI Filter Design for Matrix Conver
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that may involve long Finite Elemen
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CONTENTS 3.1 Introduction . . . . .
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CONTENTS B External DLL 118 B.1 C c
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LIST OF FIGURES 2.10 Measurement at
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LIST OF FIGURES 6.9 CM Conducted EM
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LIST OF FIGURES 8.18 Input CM and D
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LIST OF TABLES 7.9 Attenuation for
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CHAPTER 1: INTRODUCTION the receive
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CHAPTER 1: INTRODUCTION Abs. Magnit
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CHAPTER 1: INTRODUCTION Figure 1.5:
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CHAPTER 1: INTRODUCTION • Make th
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CHAPTER 1: INTRODUCTION Figure 1.10
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CHAPTER 1: INTRODUCTION the filters
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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
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Page 51 and 52: CHAPTER 3: HF MODELLING STRATEGY De
Page 53 and 54: CHAPTER 3: HF MODELLING STRATEGY C2
Page 55 and 56: CHAPTER 4: MOTOR AND MATRIX CONVERT
Page 71 and 72: 5.1 Introduction CHAPTER 5 EMI Meas
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Page 75 and 76: CHAPTER 5: EMI MEASUREMENTS will tr
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Page 79 and 80: CHAPTER 5: EMI MEASUREMENTS I[dBµA
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Page 85 and 86: CHAPTER 5: EMI MEASUREMENTS CM Volt
Page 87 and 88: CHAPTER 6: SIMULATIONS OF INPUT AND
Page 93 and 94: 78 Figure 6.7: Complete HF model Po
Page 97 and 98: CHAPTER 7 Filter Design and realiza
Page 99 and 100: CHAPTER 7: FILTER DESIGN AND REALIZ
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Page 119 and 120: CHAPTER 8: FILTER REALIZATION AND E
Page 129 and 130: CHAPTER 9 Conclusions and Further w
Page 131 and 132: 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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