Control Nolineal de un Convertidor Buck que Alimenta una Carga de Potencia Constante (Nonlinear Control of a Buck Converter feeding a Constant Power Load)

Jorge Solsona (, Sebastián Gómez Jorge (, Claudio Busada (

2Universidad Nacional del Sur

This paper appears in: Revista IEEE América Latina

Publication Date: Aug. 2014
Volume: 12,   Issue: 5 
ISSN: 1548-0992

In this paper a nonlinear control strategy for controlling a dc/dc Buck converter feeding a constant power load is proposed. A feedback controller is combined with a feedforward strategy. A nonlinear reduced order observer is used for estimating the value of the power load and its time derivative. These estimated values are fed forward to the nonlinear feedback controller whose design is based on feedback linearization method. The proposed controller is tested via simulations and also, experimental results are presented.

Index Terms:
CPL, nonlinear control, feedforward compen-sation.   

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