This work presents an analysis of two techniques used to analyze the frequency domain characteristics of conducted emissions measured in time domain using a LISN connected to two Switched-Mode Power Supplies. The considered interval is 10-150 kHz. The two techniques are the Short Time Fourier Transform and the Empirical Mode Decomposition method, focusing on spectral properties of impulsive phenomena, and compatibility with the typical settings of EMI receiver, whose output represents a validation reference case. The analysis points out the influence of the record length and resolution bandwidth with respect to the local signal non-stationarity.
Techniques for the Analysis of Time-Domain Conducted Emissions of SMPS in Smart Grids / Mariscotti A.; Sandrolini L.. - ELETTRONICO. - (2019), pp. 8783345.1-8783345.6. (Intervento presentato al convegno 19th IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe, EEEIC/I and CPS Europe 2019 tenutosi a Genoa, Italy nel 11-14 June 2019) [10.1109/EEEIC.2019.8783345].
Techniques for the Analysis of Time-Domain Conducted Emissions of SMPS in Smart Grids
Sandrolini L.
2019
Abstract
This work presents an analysis of two techniques used to analyze the frequency domain characteristics of conducted emissions measured in time domain using a LISN connected to two Switched-Mode Power Supplies. The considered interval is 10-150 kHz. The two techniques are the Short Time Fourier Transform and the Empirical Mode Decomposition method, focusing on spectral properties of impulsive phenomena, and compatibility with the typical settings of EMI receiver, whose output represents a validation reference case. The analysis points out the influence of the record length and resolution bandwidth with respect to the local signal non-stationarity.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
