Enhanced Control of PV CHB Inverter With Embedded BESS

This work deals with a grid-tied single-phase photovoltaic (PV) Cascaded H-Bridge (CHB) inverter implementing a distributed battery energy storage system (BESS) able to output a constant active power in scheduled time intervals. The control strategy is based on a hybrid modulation technique exploiti...

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Bibliographic Details
Published in2023 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC) pp. 1 - 5
Main Authors De Riso, Monica, Coppola, Marino, Daliento, Santolo, Guerriero, Pierluigi, Del Pizzo, Andrea
Format Conference Proceeding
LanguageEnglish
Published IEEE 29.03.2023
Subjects
BESS
Generators
grid failure
mismatch
Modulation
Multilevel inverters
Power system stability
PV CHB
SOC level
Stability criteria
Threshold voltage
Transportation
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Summary:This work deals with a grid-tied single-phase photovoltaic (PV) Cascaded H-Bridge (CHB) inverter implementing a distributed battery energy storage system (BESS) able to output a constant active power in scheduled time intervals. The control strategy is based on a hybrid modulation technique exploiting a sorting algorithm performed on batteries' state-of-charge (SoC). The aim is to prove the reliability of the system after recovering from grid trip, which causes unbalance among the batteries' SoC. Additionally, the proposed inverter is investigated considering a deep mismatch among the PV generators. Numerical analyses are performed on a 19-level CHB inverter in PLECS environment to show the effectiveness of the proposed control strategy.
DOI:10.1109/ESARS-ITEC57127.2023.10114824