Title :
Modeling and state-space feedback control of a DC-DC converter for photovoltaic systems
Author :
Fernandes, Darlan A. ; Vieira, Marcia K. ; Vitorino, Montie A. ; Fragoso Costa, Fabiano ; Ribeiro, Pollyana C.
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Paraiba - UFPB, Joao Pessoa, Brazil
Abstract :
In this work is proposed a model of a photovoltaic (PV) system comprised by PV-arrays connected to a dc-dc converter. Toward this purpose, the PV panels, dc-dc converter and the controller are modeled as a set of state-space equations suitable for adjusting the transient and steady-state performances of the system. The photovoltaic system is evaluated with the average state variable method and the controllers are designed by means of concepts of the characteristic polynomial and the system controllability. These concepts in state-space formulation allow the controllers can be determined by the ackermann´s method. The modeling and proposed control are tested by simulations and experimental procedures. The results corroborate the performance of the method.
Keywords :
DC-DC power convertors; control system synthesis; photovoltaic power systems; state feedback; state-space methods; Ackermann method; DC-DC converter modelling; PV panels; PV system; PV-arrays; average state variable method; characteristic polynomial concepts; photovoltaic systems; state-space equations; state-space feedback control; steady-state performances; system controllability; transient performances; Control systems; Inverters; Mathematical model; Photovoltaic systems; Polynomials; Voltage control;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2014 IEEE
Conference_Location :
Pittsburgh, PA
DOI :
10.1109/ECCE.2014.6953525
