Modeling and Analysis of MIMO Controller for Grid-connected PV/FC Hybrid Energy System
Keywords:
grid-connected system, hybrid energy system, MIMO controller, maximum power point tracking (MPPT) and PV/FCAbstract
Grid-connected Photovoltaic/Fuel Cell Hybrid Energy System is receiving more and more attention as it contains more than one renewable energy sources or storage techniques to provides smooth and continuous supply. But this system has the problem voltage stability, voltage regulation and exposure to multiple faults. To remove these issues in hybrid grid-connected energy system, a multi-input multi-output (MIMO) system is developed in this research work. The proposed MIMO controller is designed to monitor, control, and track the maximum power point (MPP) of FC and PV power sources, as well as manage the output power of a grid-connected DC-AC inverter to supply smooth and clean power to sensitive loads. The grid-connected PV/FC system is simulated using the MATLAB/Simulink 2020a toolbox to determine the efficiency and accuracy of the developed controllers and reduced Total Harmonic Distortion (THD) to a value lower than 5% as per IEEE Std 1159-1992, which is completely compatible with the standards of the distribution network. A comparative analysis between proposed technique and state of the art are also presented to validate the effectiveness of the proposed work.
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