Modal characterization of power-line filter capacitors

A. M. Sánchez, A. Pérez, J. R. Regué, M. Ribó, P. Rodríguez-Cepeda, F. J. Pajares

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    2 Cites (Scopus)


    A typical power-line filter is composed, essentially, by common-mode chokes, X-class and Y-class capacitors. A good characterization of these components is needed to develop a technique to design the optimal power-line filter for an electric or electronic device by finding their best values. In this paper, a new methodology to characterize the behavior of power-line filter capacitors is presented. This methodology is based on a model where common-mode and differential-mode interference are separated into different ports in order to facilitate the study of the propagation phenomena. The methodology is used to explain modal conversion inside impedance networks with X-class and Y-class capacitors, to predict the common-mode and differential-mode emissions when these capacitors are connected to electric or electronic devices, and to improve the classical methodology of power-line filter implementation finding the optimal capacitances of the impedance networks. This new methodology has been successfully tested by using real measurements from capacitors and electric devices.

    Idioma originalAnglès
    Número d’article5352321
    Pàgines (de-a)289-297
    Nombre de pàgines9
    RevistaIEEE Transactions on Power Delivery
    Estat de la publicacióPublicada - de gen. 2010


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