Peak Current Controlled SEPIC (PCC-SEPIC) stability is discussed in this paper. Critical values of the coupling capacitance and of the current modulator gain for stability are analytically determined for loss-less converter by using a novel reduced order lossless ac model of PCC-SEPIC. A stability boundary is thus derived, unveiling a correlation among the coupling capacitance, the current modulator gain and the stability. The stability predictions provided by the loss-less model are compared with the results of simulations and experiments. A numerical investigation on PCC-SEPIC stability when resistive losses are taken into account is provided for a critical evaluation of the results obtained by means of the analytical loss-less model.

Analytical stability boundary for peak-current mode controlled SEPIC

CANTILLO, ANDREA;DE NARDO, ANTONIETTA;FEMIA, Nicola;ZAMBONI, Walter
2010

Abstract

Peak Current Controlled SEPIC (PCC-SEPIC) stability is discussed in this paper. Critical values of the coupling capacitance and of the current modulator gain for stability are analytically determined for loss-less converter by using a novel reduced order lossless ac model of PCC-SEPIC. A stability boundary is thus derived, unveiling a correlation among the coupling capacitance, the current modulator gain and the stability. The stability predictions provided by the loss-less model are compared with the results of simulations and experiments. A numerical investigation on PCC-SEPIC stability when resistive losses are taken into account is provided for a critical evaluation of the results obtained by means of the analytical loss-less model.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11386/3017917
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