Solar PV Transient Mitigation using Superimposed Sliding Mode-Perturb and Observe MPPT under Varying Irradiation Conditions

Varying weather specifically temperature and irradiation have a significant impact on Solar Photo Voltaic (SPV) output performance efficiency. Both the voltage power are unstable due to unwanted solar fuel variation. Therefore, Maximum Power Point Tracking (MPPT) plays an important role in case of SPV. Although different MPPT techniques imposed mitigate above-said issues, Perturb Observe (P&O) is unique its operation simple design. But when P&O comes under sudden large variation parameters, it fails track move away from (MPP). A sliding mode controller superimposed with conventional known as Superimposed Sliding Mode Controller-P&O (SISMC-PO) proposed this paper that improves tracking accuracy tries minimize transient disturbance during rapid change irradiation. Input side capacitor current error SPV reference taken input SMC whereas MPPT. SISMC-PO produces highly efficient robust control switching frequency suitable step size drives switch DC-DC boost converter which tested verified by MATLAB/SIMULINK.