A fuzzy PD-PI control strategy to track the voltage references of photovoltaic arrays

Author

Moçambique, Nilton E M ; Machado, Ricardo Q. ; Oliveira, Vilma A.

Author_Institution

Dept. of Electr. Eng., Univ. of Sao Paulo, Sao Paulo, Brazil

fYear

2011

fDate

19-21 Dec. 2011

Firstpage

1162

Lastpage

1167

Abstract

In this paper, a fuzzy PD plus a PI controller structure for a photovoltaic PV system is presented. The controller tracks a voltage reference given by the perturb and observe P&O maximum power point tracking (MPPT) algorithm. The main drawback of the P&O MPPT algorithm is that at steady state the operating point oscillates around the maximum power point (MPP). The feedback control law proposed in this paper to track the references for a PV array connected to a DC-DC converter improves the P&O MPPT performance. Simulations under different environment conditions are provided to confirm the efficiency of the proposed approach.

Keywords

PD control; PI control; feedback; fuzzy control; maximum power point trackers; photovoltaic power systems; power generation control; voltage control; DC-DC converter; MPPT; P&O maximum power point tracking algorithm; feedback control law; fuzzy PD-PI control strategy; photovoltaic PV system; photovoltaic arrays; voltage reference tracking; Integrated circuit modeling; PD control; Photovoltaic systems; Resistance; Switches; Voltage control; DC-DC converter; PV systems; fuzzy control; maximum power point tracking;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Automation (ICCA), 2011 9th IEEE International Conference on

Conference_Location

Santiago

ISSN

1948-3449

Print_ISBN

978-1-4577-1475-7

Type

conf

DOI

10.1109/ICCA.2011.6138046

Filename

6138046