A Simple Synchronization Logic Aided Interleaved Fly-Back MIC for Grid Interactive Photovoltaic Power System
Abstract
In this paper, an interleaved fly-back converter based module integrated converter (IFBC-MIC) for grid interaction of photovoltaic (PV) system is presented. MIC grid integration technology received wide acceptance in PV applications and may assist in achieving maximum power generation for mismatched or partially shaded PV modules by independent control of individual PV modules according to their insolation levels, giving substantially higher output power.This paper develops a MIC system involving interleaved fly-back converter to minimize the switching ripple of the dc link voltage and a simple zero crossing detectors (ZCD) circuits based gird synchronization circuit to avoid the complex phase locked loop (PLL). The proposed system includes the Perturb and Observe (P&O)Maximum Power Point Tracking(MPPT) to enhance the PV power extraction.A 100W PV system is considered for the MATLAB based simulation study and hardware experimentation. Simulation and hardware results prove that the suggested system is highly suitable for portable PV applications.
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DOI (PDF): https://doi.org/10.20508/ijrer.v8i1.6594.g7335
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