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International Journal of Photoenergy
Volume 2010, Article ID 245316, 11 pages
http://dx.doi.org/10.1155/2010/245316
Review Article

Recent Developments in Maximum Power Point Tracking Technologies for Photovoltaic Systems

Vocational School of Technical Studies, Marmara University, Kadıkoy, 34722 Istanbul, Turkey

Received 24 August 2010; Accepted 11 November 2010

Academic Editor: Fahrettin Yakuphanoglu

Copyright © 2010 Nevzat Onat. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In photovoltaic (PV) system applications, it is very important to design a system for operating of the solar cells (SCs) under best conditions and highest efficiency. Maximum power point (MPP) varies depending on the angle of sunlight on the surface of the panel and cell temperature. Hence, the operating point of the load is not always MPP of PV system. Therefore, in order to supply reliable energy to the load, PV systems are designed to include more than the required number of modules. The solution to this problem is that switching power converters are used, that is called maximum power point tracker (MPPT). In this study, the various aspects of these algorithms have been analyzed in detail. Classifications, definitions, and basic equations of the most widely used MPPT technologies are given. Moreover, a comparison was made in the conclusion.