Model conducted EMI emission of switching modules for converter system EMI characterization and prediction

The spread of information-communication technology (ICT) devices in full and/or hybrid electric vehicles is posing increasing issues about coexistence between communication and electric power systems. Particularly, under different operating conditions, the time-variant and nonlinear behavior of the involved power-electronic devices may cause detrimental electromagnetic interference (EMI) effects for onboard ICT devices. The use of passive or active EMI filters can mitigate EMI, yet their effective design requires the knowledge of the actual modal impedances of the involved components. With the final objective to support EMI filter design, in this work, the frequency response of the common mode (CM) and differential mode (DM) impedances of a complete automotive power train is investigated under different operating conditions. Moreover, both low-frequency functional aspects and high-frequency parasitic effects are considered and modelled properly.

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

Musznicki

Schanen

Granjon

et al. 2006

2006 12th International Power Electronics and Motion Control Conference

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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.

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Model conducted EMI emission of switching modules for converter system EMI characterization and prediction

Cited by 11 publications

References 15 publications

Fast prediction for conducted EMI in flyback converters

Fast prediction for conducted EMI in flyback converters

SPICE Simulation of Modal Impedances in Automotive Powertrains under Different Operating Conditions

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

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