Charging and Discharging Characteristics of a Battery-Capacitive Energy Storage Device for Stand-Alone Photovoltaic System
https://doi.org/10.35596/1729-7648-2022-20-2-78-85
Abstract
The purpose of the research is to study the charging-discharging characteristics of a hybrid energy storage device which consists of two parallel connected battery and capacitive parts to assess the work efficiency of its circuit design as a part of standalone photovoltaic system. The charge current kinetics of a hybrid storage device from a solar panel was carried out under natural conditions at a specific power of incident solar radiation of 800–850 W/m2. The discharge current kinetics of battery and capacitive storages were obtained with a resistive load and disconnected solar battery. The dynamics of charging and discharging processes of the battery and capacitive parts of the energy storage device were monitored by the voltage rise/fall rate. The battery part of the drive is charging and starting the device based on a lead-acid gel battery with a charging capacity of 11 A·h, 12.8 V maximum voltage, and 15 A maximum discharge current. The capacitive part consisted of a new generation INSPECTOR Booster supercapacitor starting the device with an electrostatic capacity of 80 F, 15.5 V voltage, and 800 A starting current. As the energy source a solar battery was used, with a 12 V nominal voltage and 100 W peak power. A 6 Om rheostat with 15 A consumption current was used as a load during the storage device discharge. A Morningstar ProStar-15 charging/discharging controller with a pulse-width modulation function was used to monitor and control the photovoltaic system. Quantitative charging and discharging characteristics of a battery-capacity energy storage device were obtained for the use in the development of standalone photovoltaic system.
About the Authors
V. P. Vasilevich
Belorussian State University of Informatics and Radioelectronics
Belarus
Belarus
Сand. of Sci., Professor at the Department of Electronic Engineering and Technology
220013, Minsk, P. Brovka st., 6
tel. +375-29-310-33-12
М. Y. Zbysinskaya
Belorussian State University of Informatics and Radioelectronics
Belarus
Belarus
Zbyshinskaya Mariya Yevgen’evna - Ph.D. student at the Department of Electronic Engineering and Technology
220013, Minsk, P. Brovka st., 6
tel. +375-29-310-33-12
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Review
For citations:
Vasilevich V.P., Zbysinskaya М.Y. Charging and Discharging Characteristics of a Battery-Capacitive Energy Storage Device for Stand-Alone Photovoltaic System. Doklady BGUIR. 2022;20(2):78-85. (In Russ.) https://doi.org/10.35596/1729-7648-2022-20-2-78-85
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