摘要
针对光伏并网逆变控制系统的电路结构,采用PI调节和前馈补偿的控制方法,实现了并网电流的正弦化和单位功率因数并网目标,介绍了调节器及滤波电路的参数设计方法,并采用自适应变步长电导增量法来解决光伏阵列输出的最大功率跟踪问题,最后对光伏并网逆变控制系统进行了仿真实验。实验证明了该控制策略的有效性,能较好地满足光伏阵列并网的基本要求。
Aiming at the circuit structure of photovoltaic grid-connected inverter system,in order to guarantee the sine grid-connected current and the unity power factor, PI-regulation and feed-forward compensation were adopted. The parameters calculating method of the regulator and the filter circuit were introduced and the auto-change step incremental conductance algorithm was presented to solve the problem of maximum output power of solar cells. Experimental results confirm these control strategies are effective and can meet the requirement of photovoltaic grid-connected inverter system well.
出处
《电气传动》
北大核心
2011年第11期51-53,64,共4页
Electric Drive
基金
国家电网公司重点项目(dgnz200810)
关键词
三相光伏并网
前馈补偿
参数设计
最大功率跟踪
three phase photovoltaic grid-connected system
feed-forward compensation
parameter design
maximum power point tracking （MPPT）
作者简介
郭立杰（1986-），男，硕士研究生，Email：guolijie55@163．com
