RT journal article
T1 Simplified model of battery energy-stored quasi-Z-source inverter-based photovoltaic power plant with Twofold energy management system
A1 De Oliveira-Assis, Lais
A1 Soares-Ramos, Emanuel P. P.
A1 Sarrias Mena, Raúl
A1 Sarrias Mena, Raúl
A1 García Triviño, Pablo
A1 González Rivera, Enrique
A1 Sánchez Sainz, Higinio
A1 Llorens Iborra, Francisco
A1 Fernández Ramírez, Luis Miguel
A2 Ingeniería Eléctrica
A2 Ingeniería en AutomáticaElectrónica, Arquitectura y Redes de Computadores
K1 PV power Plant
K1 Energy storage system
K1 Quasi-Z-source inverter
K1 Modelling Control
AB The use of a battery energy-stored quasi-Z-source inverter (BES-qZSI) for large-scale PV power plants exhibits promising features due to the combination of qZSI and battery as energy storage system, such as single-stage power conversion (without additional DC/DC boost converter), improvements in the output waveform quality (due to the elimination of switching dead time), and continuous and smooth delivery of energy to the grid (through the battery energy storage system). This paper presents a new simplified model of a BES-qZSI to represent the converter dynamics with sufficient accuracy while using a less complex model than the detailed model (including the modelling of all switches and switching pulses). It is based on averaged values of the variables, voltage/current sources, and the same control circuit than the detailed model, except for the switching pulses generation. The simplified model enables faster time-domain simulation and is useful for control design and dynamic analysis purposes. Additionally, an energy management system has been developed to govern the power supply to grid under two possible scenarios: 1) System operator command following; or 2) economic dispatch of the stored energy. The results obtained from simulations and experimental hardware-in-the-loop (HIL) setup for different operating conditions of the grid-connected large-scale PV power plant with battery energy storage under study demonstrate the validity of the proposed simplified model to represent the dynamics of the converter and PV power plant for steady-state stability studies, long-term simulations, or large electric power systems. © 2021 The Authors
PB ELSEVIER
SN 0360-5442
YR 2022
FD 2022-04
LK http://hdl.handle.net/10498/26321
UL http://hdl.handle.net/10498/26321
LA eng
NO This work was partially supported by the Spain's Ministerio de Ciencia, Innovaci?n y Universidades (MCIU), Agencia Estatal de Investigaci?n (AEI), and Fondo Europeo de Desarrollo Regional (FEDER) Uni?n Europea (UE) (grant number RTI2018-095720-B-C32), by the Federal Center for Technological Education of Minas Gerais, Brazil (process number 23062?010087/2017-51) and by the National Council of Technological and Scientific Development (CNPq-Brazil)
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-may-2026