光伏阵列变阵调整输出算法的研究

The design of convertible photovoltaic array adjust output algorithm

针对多子系统的光伏发电大系统,提出了光伏阵列变阵思想,并给出了光伏变阵调整输出算法及控制器的设计。当光照强度较好时,各子系统独立的正常工作。随着光照强度降低,变阵控制器根据系统所需求的负载要求,改变大系统的结构,对各子系统进行系统重组。重组后系统将部分子系统的能量资源补充给其他子系统,使部分子系统的能量满足负载的要求,进而延长了发电系统的工作时间。通过一个仿真例子说明了给出方法的有效性及可行性。

For the photovoltaic large scale system consisted of many subsystems,this paper presented the idea of convertible photovoltaic array,and gave convertible photovoltaic array adjust output algorithm.When illumination intensity is high,subsystems work respectively.When illumination intensity drops to the some degree,convertible photovoltaic array controller will change the structure of the large scale system to recombine the subsystems according to the capacity of current load and the system require of open circuit voltage and closed current.The recombined system makes the some subsystems energy supplemented to other subsystems.Then these subsystems energy can satisfy the load require,and prolong the worktime of photovoltaic power generation.A simulation was given to show the effectiveness and the feasibility of the obtained results.