EMI Estimation for DC/AC Hard Switching Converter Using Wiener Filter

This paper describes how the use of a specific signal processing method can help to estimate and understand the Electromagnetic Interference (EMI) generation of a switched mode power supply. This method allows to estimate, from EMI measurements, the different transfer functions between each source of disturbance and the disturbances themselves. Thus, the EMI signals is decomposed and combined with independent source of disturbances. This method is based on the redefinition of the voltage source inverter switching states, and on the Wiener filtering theory. This new tool for fast EMI estimation and prediction is first described, and its performance is illustrated on simulated and measured data.

[1]  L. Rossetto,et al.  Boost PFC with 100 Hz switching frequency providing output voltage stabilization and compliance with EMC standards , 1998, Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242).

[2]  B. Widrow,et al.  Adaptive noise cancelling: Principles and applications , 1975 .

[3]  Jean-Luc Schanen,et al.  Better Understanding EMI Generation of Power Converters , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[4]  S. Lefebvre,et al.  Quantification and minimization of conducted interferences generated in hard switching and zero current switching cells , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[5]  J.-L. Schanen,et al.  Accurate modeling of layout parasitic to forecast EMI emitted from a DC-DC converter , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[6]  F. Wang,et al.  Model conducted EMI emission of switching modules for converter system EMI characterization and prediction , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[7]  Jih-Sheng Lai,et al.  Inverter EMI modeling and simulation methodologies , 2006, IEEE Transactions on Industrial Electronics.

[8]  A. Consoli,et al.  High frequency modeling of DC/AC converters , 2005, 2005 European Conference on Power Electronics and Applications.

[9]  S. Vaseghi,et al.  Spectral Subtraction 11.1 Spectral Subtraction 11.2 Processing Distortions 11.3 Non-linear Spectral Subtraction 11.4 Implementation of Spectral Subtraction S Noise-free Signal Space Advanced Digital Signal Processing and Noise Reduction, Second Edition , 2022 .

[10]  Li Ran,et al.  Conducted electromagnetic emissions in induction motor drive systems. II. Frequency domain models , 1998 .

[11]  Robert Smolenski,et al.  Common mode current paths and their modeling in PWM inverter-fed drives , 2002, 2002 IEEE 33rd Annual IEEE Power Electronics Specialists Conference. Proceedings (Cat. No.02CH37289).

[12]  M.C. Di Piazza,et al.  Conducted EMI in power converters feeding AC motors: experimental investigation and modelling , 2000, ISIE'2000. Proceedings of the 2000 IEEE International Symposium on Industrial Electronics (Cat. No.00TH8543).

[13]  Jan Abraham Ferreira,et al.  Sources, paths and traps of conducted EMI in switch mode circuits , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.