Document Type
Journal Article
Publication Title
Applied Sciences
Publisher
MDPI
School
Electron Science Research Institute
Abstract
In a photovoltaic (PV)-battery integrated system, the battery undergoes frequent charging and discharging cycles that reduces its operational life and affects its performance considerably. As such, an intelligent power control approach for a PV-battery standalone system is proposed in this paper to improve the reliability of the battery along its operational life. The proposed control strategy works in two regulatory modes: maximum power point tracking (MPPT) mode and battery management system (BMS) mode. The novel controller tracks and harvests the maximum available power from the solar cells under different atmospheric conditions via MPPT scheme. On the other hand, the state of charge (SOC) estimation technique is developed using backpropagation neural network (BPNN) algorithm under BMS mode to manage the operation of the battery storage during charging, discharging, and islanding approaches to prolong the battery lifetime. A case study is demonstrated to confirm the effectiveness of the proposed scheme which shows only 0.082% error for real-world applications. The study discloses that the projected BMS control strategy satisfies the battery-lifetime objective for off-grid PV-battery hybrid systems by avoiding the over-charging and deep-discharging disturbances significantly.
DOI
10.3390/app10248799
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Qays, M. O., Buswig, Y., Basri, H., Hossain, M. L., Abu-Siada, A., Rahman, M. M., & Muyeen, S. M. (2020). An intelligent controlling method for battery lifetime increment using state of charge estimation in PV-battery hybrid system. Applied Sciences, 10(24), Article 8799. https://doi.org/10.3390/app10248799