基于模糊参数自整定数字PID控制的光伏最大功率点跟踪技术研究

Study of Maximum Power Point Tracking Technology Based on Fuzzy Parameters Self-Tuning Digital PID Control

介绍了光伏电池的输出特性及最大功率点跟踪(MPPT)技术的基本原理。针对光伏电池的特点,提出一种采用模糊参数自整定数字PID控制实现光伏系统MPPT控制的方法,其能快速响应外界环境的变化,使光伏系统始终工作在最大功率点。仿真和实验结果证明该系统具有鲁棒性和快速响应等优点。

Output characteristic of the pohotovoltaic（PV） cell and the principle of maximum power point tracking（MPPT） were introduced.Based on the feature of the（PV） cell,fuzzy parameter self-tuning digital PID controller was proposed to realize its MPPT.PV energy generation system could track the maximum power of PV cell rapidly by using digital PID.Simulation and experimental results showed that the system had the robustness and the advantages of rapid response.