Control Strategy and Power Management for Multifunctional Inverters with BESS and Reactive Power Compensation

Due to the non-controllable characteristics of the photovoltaic (PV) generation, like the solar radiance intermittence, technical challenges arise for the electrical power system, when considered a high penetration of PV generation in the utility grid. One possible solution for these problems is to...

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Bibliographic Details
Published in2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC) pp. 1 - 6
Main Authors Meneghetti, Luiz Henrique, Laercio Carvalho, Edivan, Schmidt, Gustavo B. K., Giovani Carati, Emerson, da Costa, Jean Patric, Marcelo de Oliveira Stein, Carlos, Iensen Nadal, Zeno Luiz, Cardoso, Rafael
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2019
Subjects
Active filters
Active var compensation
Batteries
Battery energy storage systems
Inverters
Multifunctional inverters
Photovoltaic systems
Power quality
Power system management
Reactive power
State of charge
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Summary:Due to the non-controllable characteristics of the photovoltaic (PV) generation, like the solar radiance intermittence, technical challenges arise for the electrical power system, when considered a high penetration of PV generation in the utility grid. One possible solution for these problems is to integrate a Battery Energy Storage System (BESS) with the generation systems. Herewith, it is possible to consider the distributed generator similarly as controllable sources, allowing many operating modes for the PV systems, including reactive power compensation. In this way, this paper proposes a low-level power management strategy for the compensation of active and reactive power to local loads. It aims to guarantee an adequate power factor to the installation reducing cost associated with the energy bill. Besides that, real scenarios are considered, in which the limits of the state of charge (SOC) cannot be exceeded. In this case, the system can promote the BESS recharge only by the PV or by the PV plus the utility grid. To evaluate the proposed structure, PSIM software simulations are presented. It is considered the physical model of a PV array, which uses real data obtained experimentally.
ISSN:2643-9778
DOI:10.1109/COBEP/SPEC44138.2019.9065726