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State-of-Charge Evaluation for Real-Time Monitoring and Evaluation of Lithium-Ion Battery Performance Aye Aye Mon; Swe, Wunna
The Indonesian Journal of Computer Science Vol. 13 No. 2 (2024): The Indonesian Journal of Computer Science (IJCS)
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v13i2.3911

Abstract

Nowadays, lithium-ion batteries have been garnered significant attention as the primary energy source for energy storage devices within the renewable energy sector. Key concerns surrounding the utilization of lithium-ion batteries include ensuring satisfactory design lifespan and safe operation. Consequently, there's been a practical need for battery management. Responding to this demand, various battery state indicators have seen widespread implementation. Among the battery state indicators, accurate state-of-charge (SOC) estimation is an essential requirement for many situations where Li-Ion batteries (LiBs) are used. The effectiveness of a Battery Management System (BMS) safeguards the battery against deep discharging and over-charging to maximize its lifespan. This paper conducts state of charge (SOC) evaluation of a Li-ion battery module (12V, 13 Ah lithium titanate oxide (LTO) battery) for battery management systems (BMS) in energy storage systems (ESSs).
Impact of Blocking Diodes on Fault Current Behaviour in Photovoltaic Arrays under Line-Ground and Line- Line Faults Aye Aye Mon; Han Phyo Wai
The Indonesian Journal of Computer Science Vol. 14 No. 1 (2025): The Indonesian Journal of Computer Science (IJCS)
Publisher : AI Society & STMIK Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33022/ijcs.v14i1.4727

Abstract

The maximum power output from a photovoltaic (PV) array is reduced by abnormal situations like faults and partial shading. In order to improve reliability, efficiency and safety in PV systems, fault analysis in solar photovoltaic (PV) arrays is crucial. Blocking diodes play a crucial role in photovoltaic (PV) arrays by preventing reverse current flow and improving system reliability under fault conditions. This paper investigates the impact of blocking diodes on fault current behavior in PV arrays subjected to Line-to-Ground (L-G) and Line-to-Line (L-L) faults. A comparative analysis is conducted between PV arrays with and without blocking diodes to evaluate their effect on fault current magnitude, and power loss. Results indicate that blocking diodes significantly limit reverse fault currents, thereby reducing system damage and enhancing fault isolation.The presence of blocking diodes modifies the I-V characteristics of the PV array, influencing fault detection methodologies. The performance results of 25 kW PV array system are revealed by using a Matlab/Simulink model of 10×5 size of solar array.