Wang Yulin, Sun Liying. RESEARCH ON PHOTOVOLTAIC MAXIMUM POWER POINT TRACKING BASED ON IMPROVED PSO-LGWO OPTIMIZATION[J]. 2025, 46(3): 328-334. DOI: 10.19912/j.0254-0096.tynxb.2023-1775.
When the photovoltaic array is subjected to uneven solar irradiation
its output characteristic curve will have multiple peak points. The conventional maximum power point tracking (MPPT) method may fall into the local peak point
resulting in that the photovoltaic array cannot operate at the maximum power point. In order to solve such problems
an algorithm based on improved particle swarm optimization combined with grey wolf algorithm and Levy flight module (PSO-LGWO) is proposed. In the function test and static shadow test
the algorithm can improve the convergence speed while ensuring the tracking accuracy of the algorithm compared with other grey wolf algorithms. In the dynamic shadow test
compared with the common MPPT method in the actual photovoltaic power station
it can jump out of the local optimal solution. When the solar irradiance changes greatly
it has faster convergence speed while ensuring the tracking accuracy of the algorithm.
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