Abstract
This paper presents a low-voltage ride-through (LVRT) control strategy for grid-connected energy storage systems (ESSs). In the past, researchers have investigated the LVRT control strategies to apply them to wind power generation (WPG) and solar energy generation (SEG) systems. Regardless of the energy source, the main purpose of the LVRT control strategies is to inject reactive power into the grid depending on the grid-code regulations using the grid-side inverter; the proposed LVRT control strategy for grid-connected ESSs also has the same purpose. However, unlike the WPG and SEG systems having unidirectional power flow, grid-connected ESSs have a bidirectional power flow. Therefore, the charging condition of the grid-connected ESSs should be considered for the LVRT control strategy. The proposed LVRT control strategy for grid-connected ESSs determines the injection quantity of the active and reactive currents, and the strategy depends on the voltage drop ratio of the three-phase grid. Additionally, in this paper, we analyzed the variations of the point of common coupling (PCC) voltage depending on the phase of the reactive current during the charging and discharging conditions. The validity of the proposed LVRT control strategy is verified and the variations of the PCC voltage of the grid-connected ESS are analyzed by simulation and experimental results.
Highlights
In recent years, the depletion of fossil fuels and environmental pollution have become important matters of global concern because they cause the depletion of energy resources and global warming.the demand for the use of renewable energy sources, such as wind power, solar energy, and biomass, has rapidly increased [1,2,3]
This paper presents the low-voltage ride-through (LVRT) control strategy for grid-connected energy storage systems (ESSs) by considering the contributing to increase voltage at the point of common coupling (PCC)
Experimental results ofdischarging the PCC voltage depending on the phase of the reactive current when operates under the condition
Summary
The demand for the use of renewable energy sources, such as wind power, solar energy, and biomass, has rapidly increased [1,2,3]. To meet the demand and reduce the problems associated with the depletion of fossil fuels and environmental pollution, numerous studies have been conducted for green energy and renewable energy development [4,5,6]. The common renewable energy systems are wind power generation (WPG), which uses wind turbines, and solar energy generation (SEG), which uses photovoltaic cells. Sources such as wind power and solar energy might be unreliable and unpredictable because of changes in environmental conditions. Energy storage systems (ESSs) are used for conserving energy generated by the renewable energy sources in battery systems
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
