基于模糊控制的光伏发电系统MPPT设计

为了提高光伏发电的效率，分析了光伏发电系统最大功率点跟踪控制的原理，选出了实现最大功率跟踪的硬件电路。针对光伏电池输出的非线性特点，提出了将模糊控制应用于光伏发电的 MPPT 控制中，设计了模糊控制器，并在正常光照及光照强度变化的条件下对模糊算法控制系统和扰动观察算法控制系统进行了仿真实验，得出两种算法控制下系统输出的电压波形。通过对波形的对比分析，进一步证明了模糊MPPT控制系统响应快，抗干扰能力强，系统稳定性好。

Design of MPPT in photovoltaic generation system based on fuzzy control

In order to improve the efficiency of the photovoltaic power generation, this paper analyzed the photovoltaic maximum power point tracking control system principle, choosed the hardware circuit to achieve maximum power tracking. According to the nonlinear characteristics of photovoltaic cells output, fuzzy control is put forward to the application of photovoltaic power generation MPPT(maximum power point tracking) control, the fuzzy controller is designed; and under the condition of the normal illumination and the disturbance of light intensity observed output voltage waveforms of fuzzy system and P&O system by simulation experiment. Through comparison and analysis of waveforms proved that the fuzzy MPPT control system has faster response speed, better stability and stronger anti jamming ability.