三相光伏并网逆变器的研究

摘要

This paper presents the structure of three phase photovoltaic grid-connected system.A simulation model for photovoltaic array simulator under Matlab environment based on the mathematical modules of PV arrays is built up. The simulation model of photovoltaic array simulator is used in three phase photovoltaic grid-connected system .The system includes the function of maximum power point tracking(MPPT).It can make photovoltaic grid-connected inverter woke in the best point.The feasibility and lightness of the method are verified through this simulative analysis.%介绍了单级式三相光伏系统拓扑结构.基于光伏电池数学模型,利用Matlab建立了太阳能光伏阵列通用的仿真模型,并将此电池模型用在三相光伏并网逆变仿真系统中.系统具有最大功率点跟踪(MPPT)功能,能很好地实现光伏发电系统最佳工作点跟踪.最后通过仿真和实验分析表明该控制策略正确可行.