基于动态等效阻抗匹配的光伏发电最大功率点跟踪控制  

Maximum Power Point Tracking Control in the Photovoltaic Power Generation Based on Dynamic Equivalent Impedance Matching Theory

作　　者：郑颖楠[1] 王俊平[1] 张霞[1] 

机构地区：[1]电力电子节能与传动控制河北省重点实验室(燕山大学),河北省秦皇岛市066004

出　　处：《中国电机工程学报》2011年第2期111-118,共8页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50837003)~~

摘　　要：提出1种非线性内阻抗的线性化处理方法。基于动态等效阻抗误差的概念,论述动态等效阻抗适配的工程意义;阐述动态等效阻抗误差控制的有效性。根据等效阻抗适配思想,构造出数字实现的光伏发电最大功率点跟踪(maximum power point tracking,MPPT)自寻优控制系统结构和算法。最后的实验结果证明,与几种经典MPPT控制算法相比,动态等效阻抗匹配控制算法具有更明显的优点。A new method which can linearize the nonlinear internal impedance was proposed.Based on the concept of dynamic equivalent impedance error,the engineering significance of dynamic equivalent impedance matching and the validity of dynamic equivalent impedance error control method were discussed.According to the thought of equivalent impedance matching,the self-optimizing maximum power point tracking（MPPT） control structure and algorithm in the photovoltaic power generation were developed,which can be achieved by digital.The experimental results show that the dynamic equivalent impedance matching algorithm has more obvious advantages,compared with the classic MPPT control algorithms.

关 键 词：等效阻抗 阻抗匹配 最大功率点跟踪 光伏发电 

分 类 号：TM615[电气工程—电力系统及自动化]