小型风光互补独立供电系统的研究与设计

Research and Design of Small Wind/PV Hybrid Independent Generation System

针对目前小型风光互补发电系统的不足,通过对光伏发电和风电各自实现最大功率点跟踪(MPPT)的原理和控制方进行分析和研究,提出了一种新的分类最优控制法。这种方法根据不同环境条件采用不同的控制方式,在小型风光互补独立发电中用一个Boost变换器同时实现风电和光伏发电的MPPT;同时系统对蓄电池采用带有循环成分的浮充制以延长其寿命。实验结果表明该方案性能稳定,能较好地同时实现风电和光电的MPPT,系统成本有所降低,在小型风光互补发电系统中有较高的推广价值。

As to the current defects of small wind and solar power generation system, through analysis and research of the principle and control method of the maximum power point tracking （MPPT） realized by PV and Wind power sys- tem respectively, a novel optimized control methods for classifying is proposed. By using this method, different con- trol modes are used under different environmental condi- tions, and one boost converter is used to achieve wind power and photovoltaic maximum power point tracking （MPPT） simultaneously in small wind/PV hybrid independent genera- tion system. At the same time, floating charge with cycle components is adopted to extend battery life in this system. Experimental results show that this scheme can keep system stable, and system can achieve wind power and photovoltaic MPPT simultaneously with low cost, which has high popu- larization value in small wind/PV hybrid generating system.