Special Issue Article Open Access

Design and Implementation of Solar Power Optimizer for DC Distribution System using Dual Active Bridge

Abstract

this paper proposes a high step-up solar power optimizer (SPO) that efficiently harvests maximum energy from a photovoltaic (PV) panel then outputs energy to a dc-micro-grid. The existing structure integrates coupled inductor and switched capacitor technologies to realize high step-up voltage gain. The proposed system enhances the features of Dual Active Bridge and perturbation and observation algorithm for tracking the maximum power and to step up the input power. The photovoltaic energy is harvested and given to Dual Active Bridge circuit where it can be highly stepped up using linear tansformer.The linear transformer turns ratio is 1:4 and this output is again given to the converter bridge .The converter changes AC into DC.This dc power is given as a input to the dc distribution system. This method has high efficiency and easy implementation. Number of components used for its implementation also lesser than existing systems. The dual active bridge is simulated using MATLAB/ SIMULINK software for different solar panel power. Index Terms—Dual Active Bridge, Maximum Power Point Tracking algorithm, photovoltaic panel

C Anusuya, Mr. S.Venkatasubramanian

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