EMI Filter Design for the Integrated Dual Three-Phase Active Bridge (D3AB) PFC Rectifier

Time–Frequency Analysis of Experimental Measurements for the Determination of EMI Noise Generators in Power Converters

“…The next step in this work will be to define the equivalent noise generators, differentiating between common-mode noise and differential-mode noise, based on the combination of the measured switching signals. The previous work by Bishnoi on behavioural models for EMI modelling or the more recent work by Brovont, Lemmon, Kolar and others will provide valuable starting points [6,11,12,16,17]. These, together with the determination of the characteristics of the propagation paths, will allow the development of a noise generation and propagation model that can simulate the conducted and radiated emission levels.…”

“…This is part of the general objective of system modelling, which is still relevant today when dealing with problems and associated applications such as the derivation of the EMI model itself [11], the separation of common-mode and differential-mode noise [12], the EMI filter design [13][14][15], etc.…”

Current Sensor Integration Issues with Wide-Bandgap Power Converters

“…To mitigate these issues, proper design of sensing circuitry and optimal layout of the converter can reduce the problems associated with high di/dt, which is also emphasized in Figure 14 Except for the ways to conduct EMI that can be easily eliminated by isolated sensing circuits, it can be coupled near the field or radiated, in which EMI noise can be coupled or induced by parasitic inductances and capacitances within the sensing circuit [59]. The amount of coupled noise currents can be reduced by minimizing stray capacitance (by shrinking the conductor connections and increasing their distance from each conductor), and to minimize the induced EMI noise voltage, the parasitic inductance of these sensing circuits must be reduced [60][61][62][63][64].…”