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Sliding mode controller (SMC) based MPPT systems are less effective due to inputLCintank of boost converter. TheLCintank at PV node creates the sinusoidal waves ofVpv/Ipv, due to which phase angle (φ) occurs between triangular wave of inductor current (IL) and sinusoidalVpv. This creates the adverse effects on SMC operation. In this research work, a series capacitor based boost converter is developed without using the parallelLCincircuit. Consequently,Vpv/Ipvbecomes triangular (pure/semi) andφfactor betweenVpvand triangularILis minimized. The proposed setup ensures a high frequency operation and better voltage regulation of SMC. Through theoretical, mathematical and experimental studies, the response of PV source with conventional converter and proposed converter have been analyzed. Finally, extensive simulation studies and experimental evidences are presented, which highlights the superior dynamic and steady efficiencies of PV system with proposed topology as opposed to conventional converter and other recently developed MPPT systems.
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Murtaza et al. (2022) studied this question.
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