Conducted EMI identification in power electronic converters

This work presents the circuit simulations and the
conventional signal processing technique (Wiener
filtering) in order to reconstruct conducted
ElectroMagnetic Interferences (EMI), generated and
propagated in power electronics converters. In the
simulation study, the most accurate presently
available models of components of circuit have been
used and improved. The proposed Wiener filtering
method allows to identifying the transfer function
between source and generated
perturbations. It can be useful for better
understanding of the origin of the disturbances of
such complex system and may be helpful in converters
designing, concerning particularly control lows or
switching modes. The proposed method has been
developed and validated on simply DC boost structure
and the applied to voltage inverters using PWM, PDM
and finally using resonance (PQRDCLI topology). It
proved that, EMI level and shape, depend on converter
state.

Autorentext

Piotr Musznicki (1976) received the M.Sc. and Ph.D. degrees inPower Electronics from the Faculty of Electrical and ControlEngineering of the Gdansk University of Technology in 2001 and2006 and also Ph.D. degree in INPG Laboratoire d'Electrotechniquede Grenoble in 2006.

Klappentext

This work presents the circuit simulations and theconventional signal processing technique (Wienerfiltering) in order to reconstruct conductedElectroMagnetic Interferences (EMI), generated andpropagated in power electronics converters. In thesimulation study, the most accurate presentlyavailable models of components of circuit have beenused and improved. The proposed Wiener filteringmethod allows to identifying the transfer functionbetween source and generatedperturbations. It can be useful for betterunderstanding of the origin of the disturbances ofsuch complex system and may be helpful in convertersdesigning, concerning particularly control lows orswitching modes. The proposed method has beendeveloped and validated on simply DC boost structureand the applied to voltage inverters using PWM, PDMand finally using resonance (PQRDCLI topology). Itproved that, EMI level and shape, depend on converterstate.