基于模糊控制的太阳能发电MPPT控制技术

摘要

The output characteristics of the solar cell changes with load and outside environment. If the solar array keeps working in maximum power point nearby, it can greatly improve the conversion efficiency of photovoltaic battery. According to the maximum power point tracking basic principle, the method based on fuzzy control with online parameters adjustment of optimization method was proposed. The simulation results show that when the outside environment changes, the system can make rapid response, and work consistently in maximum power point nearby with very good stability.%太阳电池的输出特性随负载及外界环境的变化而变化,太阳电池阵列保持工作在最大功率点附近,能极大地提高光伏电池的转换效率.根据最大功率点跟踪的基本原理,提出了基于模糊控制,具有在线参数调整的自寻优方法占空比扰动法.当外界环境变化时,仿真结果显示系统能迅速做出反应,使系统始终工作在最大功率点附近,具有很好的稳定性.