A Tri-port DC-DC Converter for Bifacial PV with Energy Storage Application
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Indian Institute of Technology, Kharagpur
University of Southampton
These authors had equal contribution to this work
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Efstratios Batzelis   

University of Southampton
Power Electronics and Drives 2024;9(Special Section - Renewable Energy Conversion and Energy Storage Systems )
The power output of photovoltaic (PV) systems, especially bifacial modules, varies due to daily fluctuations in irradiance and temperature. Maximizing efficiency and power extraction are crucial. Hybrid DC off-grid topologies offer promise for rural electrification with solar energy and battery backup. These systems, tailored for household appliance use, feature low semiconductor count, continuous current ports for PV, battery, and DC loads, low-voltage levels for PV and battery, voltage regulation for DC loads, maximum power point tracking, proper battery charging and discharging, high-voltage boosting sans low-frequency transformers, and reduced power converter stages. However, existing schemes often lack critical features. Hence, this paper proposes a novel three-switch tri-port converter with integrated energy storage for standalone bifacial PV applications, with modeling and experimental validation. The battery serves as an energy storage component, regulating the DC link voltage for consistency. This paper underscores PV system power optimization and introduces a novel tri-port converter for standalone bifacial PV setups, emphasizing energy storage's role in voltage regulation.
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