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CHAPTER 5: EMI MEASUREMENTS I[dBµA] 100 80 60 40 20 0 Matrix converter Two level drive Limit Cat B −20 0.1 1 10 Frequency [MHz] Figure 5.20: Output CM EMI comparison for Matrix and Two-level converters Common mode voltage Two more figures will be added, to fully represent the EMI measurements for the converter. A comparison of the common mode voltage will be reported for both converters, running with the same conditions as described before. The common mode voltage is described as the voltage across the star point and the ground[50] and usually this, for a general balanced sinusoidal three phase load, it is zero. However, when a converter is added to the system, this is not true any more be- cause of the coupling of the switched currents/voltages with the various parasitics in the system. The two CM voltage measurements therefore has been measured and reported in 5.21 regarding the matrix converter and in 5.22 for the two level converter. 69
CHAPTER 5: EMI MEASUREMENTS CM Voltage [V] CM Voltage [V] CM Voltage [V] CM Voltage [V] 600 400 200 0 −200 −400 −600 −20 −15 −10 −5 0 Time [ms] 5 10 15 20 −1.5 −1 CM voltage Line current 600 400 200 0 −200 −400 CM voltage detail −600 −3 −2.5 −2 −1.5 −1 Time [ms] −0.5 0 0.5 1 600 400 200 0 −200 Figure 5.21: CM Voltage measurement for Matrix converter −400 −600 −20 −15 −10 −5 0 Time [ms] 5 10 15 20 −1.5 −1 CM voltage Line current 600 400 200 0 −200 −400 CM voltage detail −600 −3 −2.5 −2 −1.5 −1 Time [ms] −0.5 0 0.5 1 Figure 5.22: CM Voltage measurement for Two-level converter 70 1.5 1 0.5 0 −0.5 1.5 1 0.5 0 −0.5 Phase current [A] Phase current [A]
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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
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CHAPTER 2 Experimental implementati
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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 93 and 94: 78 Figure 6.7: Complete HF model Po
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Page 99 and 100: CHAPTER 7: FILTER DESIGN AND REALIZ
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Page 129 and 130: CHAPTER 9 Conclusions and Further w
Page 131 and 132: APPENDIX A Scientific Publications
Page 133 and 134: 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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