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http://dx.doi.org/10.7471/ikeee.2020.24.1.364

A Study on the Off-Grid Photovoltaic Generation System with Sequential Voltage System  

Kim, Gu-Yong (School of Electronic and Electrical Engineering, Daegu Catholic University)
Bae, Jun-Hyung (School of Electronic and Electrical Engineering, Daegu Catholic University)
Kim, Jong-Hae (School of Electronic and Electrical Engineering, Daegu Catholic University)
Publication Information
Journal of IKEEE / v.24, no.1, 2020 , pp. 364-367 More about this Journal
Abstract
This paper presents the off-grid PV-ESS system of sequential voltage control method applied to OR logic gate. The conventional off-grid PV-ESS system with the low-voltage series connection has problems due to capacity expansion. To solve these problems, this paper proposes a noble PV-ESS system with high efficiency and low cost by applying sequential voltage control technique of the high-voltage series connection of analog circuit type. The input voltage of DC to AC inverter can be converted from the low-voltage by the combinations of series connection of the conventional cascaded 24V solar cell unit modules to the high-voltage of 384V in battery. The output voltage of the battery was 384V as the each input voltage of three phase DC to AC inverter, and the each output voltage of three phase 10kW DC to AC inverter is designed to be AC380V@60Hz as the line to line rms voltage value. To prove the validity of the theoretical analysis by PSIM simulation, the operating characteristics of sequential voltage control system with OR logic gate were confirmed through experiment results.
Keywords
DC to AC Inverter; Off-grid PV-ESS; OR logic gate; Sequential voltage system; Solar cell unit;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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