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High gain converters are extensively used in the solar powered Light-Emitting Diode (LED) lighting systems due to its several advantages, such as high voltage conversion, reduced voltage stress of power semiconductor devices as compared to conventional DC-DC converters. Solar energy is one of the sustainable energy resources and is able to collect the energy by using Photo-Voltaic (PV). In order to achieve high efficiency the PV should operate at maximum power point (MPP). This paper deals with the design of high gain DC-DC converter for solar powered LED lighting applications. The proposed configuration developed by voltage lift technique and has advantages of high voltage conversion ratio, economical, simple control and suitable for low and medium power applications. Different modes of the proposed topology are explained in detail with corresponding voltage and current equations. A simple Perturb and Observe (P&O) MPPT controller is applied for the proposed topology to control the output voltage from its non-linear characteristics of PV module. Simulation of high gain DC-DC converter and conventional DC-DC converter with 120 watts of LED load has been developed using MATLAB/Simulink software. Load has modeled by 120 LEDs in seriesparallel combination by supplying 3.5 V & 20 mA for each LED. The results
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Padmavathi et al. (2018) studied this question.
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