This paper proposes an energy storage system (ESS) facilitated grid synchronized solar PV inverter based on a bidirectional high gain transformerless buck/boost DC-DC converter for use in residential application to feed AC home loads as well efficient DC load operating at 48 V. The proposed system also feeds surplus power to grid as well as draws power from grid to feed load during partial shading or reduction in solar irradiance conditions. The enhanced high gain converter provides a significant benefit in the form of a reduction in the numerical values for all passive elements without obstructing the path that ground travels from the input to the output and thereby giving significant advantage in term of common ground. For the purpose of compensating for the voltage difference and gain that is present between PV panel and the grid, a power transformation unit (PTU) for a solar PV array often makes use of either a line or high frequency transformer. This results in increment in weight, size, and power loss of PTU system. Considering this, the aim of this work is to evaluate the effectiveness of a non-isolated power transformation unit (PTU) that is intended for usage in domestic roof-top systems and is backed by energy storage system (ESS). A standard boost DC/DC converter controls the solar PV system's optimum power point tracking and sends the produced energy to the ESS. This setup ensures that the solar PV system's output is used as effectively as possible. On the contrary, it is the duty of the ESS to ascertain the mode of operation of the PTU and to correct any and all power imbalances that might have arisen throughout all aspects of the PTU. During unavailability of grid, PTU acts as a steady source of voltage and continues to feed the AC and DC home loads. This is made possible by the steady power control scheme that is provided by the front-end inverter, which causes the proposed PTU to function as an uninterrupted source at the grid end. Through the simulation tool MATLAB Simulink, the PTU's design, architecture, and functionality are evaluated, and the relevant results are delivered as supporting proof for the performance claims made about the PTU.


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    Title :

    An ESS-Facilitated Grid-Synchronized Solar PV Inverter Based on a Bidirectional High-Gain Transformerless Buck/Boost DC-DC Converter


    Contributors:


    Publication date :

    2023-08-09


    Size :

    1362972 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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