电源技术2018，Vol.42Issue(4)：536-539,4.
基于二分法的变步长扰动观测MPPT算法
P&O MPPT algorithm with variable step size based on dichotomy
摘要
Abstract
The perturbation and observation (P&O) algorithm is one of the most commonly used maximum power point tracking (MPPT) methods for photovoltaic (PV) system.However,it has some inner problems,such as oscillation near the maximum power point,increasing speed with larger disturbance step size at the cost of more oscillation,decreasing oscillation with small step size at the cost of increasing searching period,not suitable for slowly changing irradiation.In order to solve those problems,a variable step size P&O MPPT algorithm based on dichotomy was proposed,beginning with large perturbation step size and frequently decreasing the step size to half until tracking the MPP.In order to prove the better performance,the proposed algorithm was compared with different MPPT algorithms.The simulation results show that the proposed algorithm has the advantages of high efficiency,high speed and less oscillation and performs well when the solar irradiation slowly changes.关键词
二分法/变步长/扰动观测/光伏系统Key words
dichotomy/variable step size/perturbation and observation/photovoltaic system分类
信息技术与安全科学引用本文复制引用
张幸,余松森,尹璐琳,钟蔚伟,杨张杰..基于二分法的变步长扰动观测MPPT算法[J].电源技术,2018,42(4):536-539,4.基金项目
广东省应用型科技研发专项资金(2016B020244003) （2016B020244003）
广州市产学研协同创新重大专项(201704020203) （201704020203）
佛山市科技创新项目(2014AG100162) （2014AG100162）
