Control Strategy for Multifunctional PV Converter

This paper proposes a multifunctional converter applied to distributed generation with an energy storage system. The main functionalities include the possibility to have programmable power dispatch to the utility grid and trade of energy between the Battery Energy System (BESS) and utility grid, acc...

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Bibliographic Details
Main Authors: Meneghetti, Luiz Henrique, Laercio Carvalho, Edivan, Carati, Emerson Giovani, Patric Costa, Jean, Oliveira Stein, Carlos Marcelo, Luiz Iensen Nadal, Zeno, Cardoso, Rafael
Format: Conference Proceeding
Language:English
Subjects:
Batteries
Battery charger
Bidirectional converters
DC-AC power converters
DC-DC power converters
Energy management
Hybrid generation systems
Inverters
Multifunctional PV converter
Transfer functions
Voltage control
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Summary:This paper proposes a multifunctional converter applied to distributed generation with an energy storage system. The main functionalities include the possibility to have programmable power dispatch to the utility grid and trade of energy between the Battery Energy System (BESS) and utility grid, accordingly to the specific interest of an Energy Management System (EMS). In order to allow these functionalities, modifications are proposed in the bidirectional buck-boost converter that is responsible for the BESS power processing. With that, it is also proposed the sharing of the DC bus voltage controller between the bidirectional DC-DC converter and the DC-AC converter. To validate the proposed system, real-time hardware-in-the-loop (HIL) simulations are presented. In the simulations, real data of solar irradiance is considered. Moreover, a model of a lithium- ion battery bank is also incorporated. The proposed system guarantees programmable dispatch with low power errors. In addition, the system is able to operate with and without BESS at the same time it ensures smooth transitions between the operation modes.
ISSN:2643-9778
DOI:10.1109/COBEP/SPEC44138.2019.9065727