On-line optimization of the P&O MPPT method by means of the system identification

Conference paper (2013)

Authors

P. Manganiello University of Salerno, Università degli Studi della Campania “Luigi Vanvitelli”
Mattia Ricco Observatoire de Paris
Eric Monmasson Observatoire de Paris
Giovanni Petrone University of Salerno
G. Spagnuolo University of Salerno
Affiliation
External organisation
More Info
expand_more

Published Date

01-12-2013

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Affiliation

External organisation

Abstract

One of the main functions any photovoltaic system is equipped with is the maximum power point tracking. The perturb and observe technique is one of the mainly used algorithms for tracking the optimal operating point of the photovoltaic source. Its performances depend on the values of the two design parameters, that are the amplitude and the frequency of the perturbations it applies for identifying the position of the maximum power point. In this paper, two methods for an on-line optimization of the perturbation period are presented. They are based on the identification of the dc/dc converter, that controls the photovoltaic source, by means of its impulse and frequency response, both evaluated by using the cross-correlation method. Such methods, as well as the tracking algorithm, are effectively implemented by using a Field Programmable Gate Array. The feasibility of the proposed methods has been confirmed by Matlab simulations.