The research of maximum power point tracking method for photovoltaic system

Abstract

In photovoltaic system, the output characteristics of photovoltaic battery are affected greatly by the light intensity and environment temperature and have obvious non-linear features, which lead to severe power loss in photovoltaic system. In order to improve the use efficiency of photovoltaic battery, it needs to track and control the maximum power point fast and accurately for photovoltaic battery. Firstly, this paper introduced some the methods of common maximum power point tracking and explained advantages and disadvantages of all kinds of methods; then, introduced the improved method of the maximum power point tracking in recent years, that has made efficiency of photovoltaic battery be improved greatly; finally, pointed out the factors which are needed to consider when choosing a method, and looked for the development direction of tracking method on maximum power point. © Springer-Verlag Berlin Heidelberg 2012.