The presence of numerous power electronics converters on embedded networks, originates EMC issues. EMC modeling of power electronic converters is tricky due to modeling complexity. Indeed, on one side, EMC study needs the finest characterization of each element, thus, only a few numbers of converters plugged to the network can be described. On the other hand, a conventional network approach, representing the converters on a pure functional point of view, does not allow such analysis of each element. Therefore "black box" or "grey box" approaches, representing the global behavior of the converters, are a good compromise between those two antagonistic needs. This article aims to sum-up characteristics of different EMC models in order to justify the choice of terminated approach. Then, all identification issues will be addressed:• Theoretical difficulties such as the physical meaning of the identified impedances • Practical difficulties like attenuated conditions sizing and measurement protocol.
This paper uses compact models of power electronics converters to represent their EMC behavior. The model does not need any knowledge of the converter design since it is identified from external measurements. Three different DC-DC converters will be identified and the model validated in various network environment. Then, the models association in a DC network will be studied. I.
This paper presents different ways of modeling the EMC behavior of power electronics converters, which are more and more frequently connected to networks. After a brief presentation of some possible models, this work proposes a formal link between a comprehensive model, based on equivalent sources and including all details of the converter and a "Black Box" approach, far more compact and suitable for network studies. Thanks to this analytical link, the influence of the technological properties of the converter on the "Black Box" model can be studied, and some feedback on the converter design proposed.
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