基于扰动观测法的MPPT改进算法

MPPT Improved Algorithm Based on Disturbance Observation Method

光伏电池(阵列)的输出功率与辐照度和温度有关,为使得输出功率达到最大,需要进行最大功率点跟踪(MPPT)。本文对常用的两种控制方法进行了分析和讨论,进而提出了将定电压法与定步长扰动观测法结合的改进算法。从仿真结果看,该算法能较快速和准确地跟踪达到最大功率点。

Output power of Photovoltaic cells（array） is relevant to irradiance and temperature. For reaching the maximum output power, it needs to track the maximum power point. This paper analyses and discusses the advantages and disadvantages of two kinds of commonly used control methods. The paper proposes an improved algorithm of combing the constant voltage method with fixed step disturbance observation method. Seen from the simulation results, it shows that this new method can track the maximum power point fast and accurately.