Yeongsu Bak, June-Seok Lee, and Kyo-Beum Lee, "Low-Voltage Ride-Through Control Strategy for a Grid-Connected Energy Storage System," Applied Science, vol. 8, no. 1, pp. 1–18, Jan. 2018. - SCIE > Paper

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Paper

International Journals Yeongsu Bak, June-Seok Lee, and Kyo-Beum Lee, "Low-Voltage Ride-Through Control Strategy for a Grid-Connected Energy Storage System," Applied Science, vol. 8, no. 1, pp. 1–18, Jan. 2018. - SCIE

2018

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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. 

 

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