Abstract
In this paper, performance enhancement of Photovoltaic (PV) system is done by a passive lossless soft switched noninverting Cuk converter with Perturb and Observe (P&O) based maximum power point tracker (MPPT) that uses a hybrid sliding mode controller (SMC). In the proposed Cuk converter, conduction losses, voltage stress and switching losses are mitigated by introducing a snubber cell. Therefore, Cuk converter efficiency is improved which in turn increases efficiency of PV system. Peak power is continuously collected from PV panel and optimal operating point is detected using hybrid SMC based MPPT method. Performance analysis of the modified Cuk converter and conventional converter is illustrated by simulation and experimental methods for various irradiation and temperature changes. Experimental results verify the performance of modified Cuk converter implemented in PV system.
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