A new MPPT method for Photovoltaic generation systems based on Hill Climbing algorithm

Author

Peftitsis, Dimosthenis ; Adamidis, Georgios ; Balouktsis, Anastasios

Author_Institution

Electr. & Comput. Eng. dept., Democritus Univ. of Thrace, Xanthi

fYear

2008

fDate

6-9 Sept. 2008

Firstpage

1

Lastpage

5

Abstract

This paper presents a new method for MPPT in photovoltaic systems based on "Hill Climbing" algorithm. According to the proposed method cube of slope of power vs. voltage (P-V) curve is calculated in each calculation step. Through this calculation both the direction of photovoltaic\´s (PV) voltage change and the step size of this change are resulted without making any slope or sign control. Moreover, a way to apply this method in PV systems which are consisted of Ns in series and Np in parallel connection PV arrays with high installed nominal power is proposed. A DC to DC buck-boost converter is used in connection with PV arrays for achieving operation in maximum power point and keeping output voltage constant. The whole system is simulated using Matlab/Simulink and simulation results are presented and analyzed.

Keywords

DC-DC power convertors; photovoltaic power systems; DC-DC buck-boost converter; MPPT method; Matlab/Simulink; hill climbing algorithm; parallel connected PV arrays; photovoltaic generation systems; Analytical models; Circuit simulation; Diodes; Equations; Mathematical model; Photovoltaic systems; Solar power generation; Solar radiation; Temperature; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines, 2008. ICEM 2008. 18th International Conference on

Conference_Location

Vilamoura

Print_ISBN

978-1-4244-1735-3

Electronic_ISBN

978-1-4244-1736-0

Type

conf

DOI

10.1109/ICELMACH.2008.4800248

Filename

4800248