基于改进型变步长与模糊控制的MPPT控制策略  

MPPT control strategy based on improved variable step sizeand fuzzy control

作　　者：程超 CHENG Chao(Power Generation Department,Anhui Huainan Pingwei Power Generation Co.,Ltd.,Huainan 232038,Anhui,China)

机构地区：[1]安徽淮南平圩发电有限责任公司发电部,淮南232038

出　　处：《上海电机学院学报》2021年第4期216-220,233,共6页Journal of Shanghai Dianji University

基　　金：国家自然科学基金资助项目(61203224);上海市电站自动化技术重点实验室开放课题资助项目(13DZ2273800)。

摘　　要：针对直流微电网中常见的太阳能光伏功率输出易受外部环境影响,具有很强的非线性特性,输出的功率会偏离最大功率点的现象。分析和总结了最大功率点跟踪(MPPT)的几类常用的控制策略优缺点后,提出改进型变步长的电导增量方法和模糊控制相结合的一种新型MPPT控制策略。通过Matlab分析表明,该控制策略能有效改善振荡,加快跟踪速度。The output of the solar photovoltaic power in direct current(DC)microgrid is easily affected by the external environment.It has strong nonlinear characteristics,and the output power will deviate from the maximum power point.Therefore,the advantages and disadvantages of several control strategies commonly used in the maximum power point tracking(MPPT)have been analyzed and summarized,and a new MPPT control strategy that combines the improved variable step conductance increment method and fuzzy control is proposed.Finally,the Matlab simulation analysis shows that the control strategy can effectively improve the oscillation and increase the tracking speed.

关 键 词：最大功率点跟踪 模糊控制 变步长 电导增量法 

分 类 号：TM615[电气工程—电力系统及自动化]