MPPT control of series photovoltaic array based on CSA-INC under partial shading

Photovoltaic power generation system is very dependent on the sun's irradiation, any change in the external environment will affect the performance of photovoltaic power generation system. The partial shadow on the photovoltaic array will also affect the power output, and also increase the complexity of maximum power point tracking. In the case of partial shading, the power-voltage characteristic curve of the photovoltaic array has multiple local maximum power points, in order to track the global maximum power point quickly and accurately, a control method based on the combination of cuckoo search algorithm and conductance increment method is proposed, the cuckoo search algorithm is used in the early stage of tracking, and the conductance increment method is switched to tracking when it reaches the maximum power point. Through the simulation analysis of the model built by MATLAB/Simulink, it can be found that the algorithm has a faster tracking speed compared with the traditional cuckoo search algorithm, and also has a good steady-state accuracy.