To address the multi-peak problem of photovoltaic (PV) array output power under partial shading conditions
this paper proposes a composite control method that integrates an improved particle swarm optimization (IPSO) algorithm with non-singular terminal sliding mode control (NTSMC). First
the mathematical model and output characteristics of the PV array are analyzed. Second
an improved particle swarm optimization algorithm is designed to reduce the impact of inertia weight during execution
thereby enhancing the output power of the PV system under partial shading. Third
a non-singular terminal sliding mode switching surface is designed to overcome the singularity problem of traditional sliding mode control
simplifying the system structure and improving steady-state accuracy. Finally
simulation experiments are conducted on the Matlab/Simulink platform and compared with existing methods. The results demonstrate that the proposed strategy exhibits superior performance in terms of tracking speed and steady-state power fluctuation
significantly improving the maximum power point tracking (MPPT) effect of the PV system.
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