李刚,李超臣,王雅文,何一卓.局部阴影下光伏电池最大功率点跟踪方法[J].电测与仪表,2023,60(2):45-52. Li Gang,Li Chaocheng,Wang Yawen,He Yizhuo.Maximum power point tracking method for photovoltaic cells under partial shading condition[J].Electrical Measurement & Instrumentation,2023,60(2):45-52.
局部阴影下光伏电池最大功率点跟踪方法
Maximum power point tracking method for photovoltaic cells under partial shading condition
With the increasingly serious energy and environmental problems, solar energy, as a green renewable energy, has been greatly developed. Photovoltaic power generation is the most common form of solar energy utilization, and maximum power point tracking is one of the effective ways to improve the efficiency of photovoltaic power generation. Due to the complex environment of the PV system, it is difficult to avoid partial shading conditions (PSCs), and the traditional tracking algorithm may have misjudgment. To solve this problem, the paper takes the MPPT control of photovoltaic array as the main line. The principle of photovoltaic power generation is analyzed, a 4×2 photovoltaic array is built, and diodes are added to prevent hot spot effect. Through simulation and programming, the output characteristics of arrays under PSCs are explored and the rules are summarized. On this basis, the MPPT is theoretically analyzed, and an effective control method is designed based on particle swarm optimization algorithm, which realizes the maximum power point tracking under PSCs. The PSO MPPT algorithm is simulated by Simulink to verify the feasibility of the algorithm.
