太阳能电池最大功率点跟踪技术探讨

Study Technology of Maximum Power Point Tracker on the Solar Cell

介绍了光伏发电系统太阳能电池的输出特性及最大功率点跟踪技术的基本原理。分析了多种常用的跟踪方法的优缺点。重点研究了二次插值法的最大功率点跟踪技术。并设计了一个系统,应用常规实验方法及二次插值法寻找太阳能电池的最大输出功率,试验结果表明二次插值法能快速寻找太阳能电池的最大输出功率。

Output characteristic of the solar battery in photovoltaic power-generation system and the principle of Maximum Power Point Tracker are introduced. Both the merits and flaws of several tracing methods in common usage are analysed. The emphasis of the study is Maximum Power Point Tracker based on quadratic interpolation. A system is designed to ascertain the maximum power output （MPO）, which is based on regular empirical approach and the quadratic interpolation. The result of the test indicates that the MPO of solar battery can be ascertained very soon in the quadratic interpolation.