光伏发电系统建模与最大功率跟踪  

Modeling and MPPT of photovoltaic power generation system

作　　者：鲍存会[1] 

机构地区：[1]陕西理工学院电气工程学院,陕西汉中723003

出　　处：《电源技术》2014年第5期851-854,共4页Chinese Journal of Power Sources

基　　金：陕西理工学院科研项目(SLGKY13-46)

摘　　要：针对光伏发电系统最大功率点跟踪时存在跟踪速度慢和电压振荡的问题,提出一种最大功率点跟踪的改进算法。该算法获取光伏电池输出的电流和电压,进行滤波和最大功率跟踪。最大功率算法采用扰动观察和电导增量混合算法,在外界环境缓慢变化时采用扰动观察算法,突变时采用电导增量算法。实验结果表明,该改进算法能够避免跟踪方向误判,减少系统持续振荡引起功率损耗,实现最大功率快速跟踪。As to the problem of tracking slow and voltage visustained oscillation, and could rapidly track maximum power point.bration during the MPPT of photovoltaic power generation system, an improved MPPT algorithm was proposed. The algorithm acquired the PV output current and voltage, then filtered and tracked the maximum power point. The perturb and observe（PO） and incremental conductance（INC）hybrid method was used in this MPPT algorithm. If environment variation was slow, the PO method was used; if environment variation was abrupt, the INC method was used. The experimental results prove that this improved algorithm can avoid erroneous judgment of tracking direction, and can reduce power lose lead by system sustainedoscillation, and could rapidly track maximum power point.

关 键 词：光伏发电 扰动观察法 电导增量法 最大功率跟踪 

分 类 号：TM615[电气工程—电力系统及自动化]