模糊PID应用于光伏发电MPPT的研究

针对定步长扰动观测法在光伏发电系统最大功率点跟踪（MPPT）上的缺陷，即跟踪精度和响应速度无法兼顾，以及常规PID控制由于其参数不能自适应整定，很难取得预期效果，提出采用模糊（fuzzy）逻辑控制法整定和优化PID参数，消除了PID参数不能自适应整定这一缺陷，提高了系统的鲁棒性。通过与使用定步长扰动观测法跟踪最大功率点的仿真结果比较，得出采用模糊PID控制，可实现快速平稳地跟踪光伏电池输出最大功率。搭建了全新的光伏电池通用模型，可为光伏电池的研究提供便利。

Fuzzy-PID Applied to the Maximum Power Point Tracking of Photovoltaic Energy Generation

In view of the defects of the fixed step size perturbation observation method in photovoltaic power generation systems on the maximum power point tracking （MPPT）, which is the tracking precision and response speed can not balance, and conventional PID control can＇t adapt its parameters to setting, so it is difficult to obtain expected result. The fuzzy logic control method is put forward and the defects of PID parameters are eliminated and the robustness of the system is improved. Compared with fixed step size perturbation of observation method of maximum power point tracking simulation results, fuzzy PID control is preferred, which can realize fast and smooth tracking photovoltaic battery output power. In addition, a new photovoltaic battery universal model is also set up, which provides the con- venience for photovoltaic cell in the future study.