Applicability Study of Battery Charging Stations in Off-Grid for Rural Electrification – the case of Rwanda

Rashed, Ghamgeen Izat; Shyirambere, Gilbert; Gasore, Geoffrey; Sun, Yang; Shafik, M.B.

doi:10.1109/pgsret.2019.8882659

Cited by 5 publications

(6 citation statements)

References 5 publications

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“…A study conducted in India compared the performance of lead-acid batteries in offgrid solar PV systems using float charging and cycle charging. The results in (Table 4) showed that cycle charging was more effective in maintaining the battery capacity and increasing its lifespan compared to float charging [39]. [39].…”

Section: Float Charging Vs Cycle Chargingmentioning

confidence: 99%

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Exploring Optimal Charging Strategies for Off-Grid Solar Photovoltaic Systems: A Comparative Study on Battery Storage Techniques

Dorel,

Gmal Osman,

Strejoiu

et al. 2023

Batteries

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This paper presents a comparative analysis of different battery charging strategies for off-grid solar PV systems. The strategies evaluated include constant voltage charging, constant current charging, PWM charging, and hybrid charging. The performance of each strategy is evaluated based on factors such as battery capacity, cycle life, DOD, and charging efficiency, as well as the impact of environmental conditions such as temperature and sunlight. The results show that each charging strategy has its advantages and limitations, and the optimal approach will depend on the specific requirements and limitations of the off-grid solar PV system. This study provides valuable insights into the performance and effectiveness of different battery charging strategies, which can be used to inform the design and operation of off-grid solar PV systems. This paper concludes that the choice of charging strategy depends on the specific requirements and limitations of the off-grid solar PV system and that a careful analysis of the factors that affect performance is necessary to identify the most appropriate approach. The main needs for off-grid solar photovoltaic systems include efficient energy storage, reliable battery charging strategies, environmental adaptability, cost-effectiveness, and user-friendly operation, while the primary limitations affecting these systems encompass intermittent energy supply, battery degradation, environmental variability, initial investment costs, fluctuations in energy demand, and maintenance challenges, emphasizing the importance of careful strategy selection and system design to address these factors. It also provides valuable insights for designing and optimizing off-grid solar PV systems, which can help to improve the efficiency, reliability, and cost-effectiveness of these systems.

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Section: Float Charging Vs Cycle Chargingmentioning

confidence: 99%

“…The results in (Table 4) showed that cycle charging was more effective in maintaining the battery capacity and increasing its lifespan compared to float charging [39]. [39].…”

Section: Float Charging Vs Cycle Chargingmentioning

confidence: 99%

Exploring Optimal Charging Strategies for Off-Grid Solar Photovoltaic Systems: A Comparative Study on Battery Storage Techniques

Dorel,

Gmal Osman,

Strejoiu

et al. 2023

Batteries

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“…Solar minigrid and solar off-grid systems offer investment opportunities in the country [71], though the sector's growth is hampered by high initial costs and restrictions on high load use. Despite the fact that minigrids and standalone systems are playing an important role in increasing the rate of electrification, the rate is not quite as fast as it could be because their prices are prohibitively high, particularly for low-income households scattered, which predominate in rural communities [72].…”

Section: Current Status Of Csp and Pv Technologies In Rwandamentioning

confidence: 99%

“…Rwanda's modern and green energy supply is typically subpar. The off-grid focus is to electrify more from locally accessible photovoltaic panels, lowering upfront costs as well as overall device costs, allowing low-income families to access power, and promoting local tenure [72]. Minigrids, in general, have made it easier for rural areas to evolve socioeconomically.…”

Section: Current Status Of Csp and Pv Technologies In Rwandamentioning

confidence: 99%

Concentrated Solar Power and Photovoltaic Systems: A New Approach to Boost Sustainable Energy for All (Se4all) in Rwanda

Hagumimana

Zheng

Asemota

et al. 2021

International Journal of Photoenergy

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The energy sector of today’s Rwanda has made a remarkable growth to some extent in recent years. Although Rwanda has natural energy resources (e.g., hydro, solar, and methane gas, etc.), the country currently has an installed electricity generation capacity of only 226.7 MW from its 45 power plants for a population of about 13 million in 2021. The current national rate of electrification in Rwanda is estimated to 54.5% (i.e.; 39.7% grid-connected and 14.8% off-grid connected systems). This clearly demonstrates that having access to electricity is still a challenge to numerous people not to mention some blackout-related problems. With the ambition of having electricity for all, concentrated solar power (CSP) and photovoltaic (PV) systems are regarded as solutions to the lack of electricity. The production of CSP has still not been seriously considered in Rwanda, even though the technology has attracted significant global attention. Heavy usage of conventional power has led to the depletion of fossil fuels. At the same time, it has highlighted its unfriendly relationship with the environment because of carbon dioxide (CO2) emission, which is a major cause of global warming. Solar power is another source of electricity that has the potential to generate electricity in Rwanda. Firstly, this paper summarizes the present status of CSP and PV systems in Rwanda. Secondly, we conducted a technoeconomic analysis for CSP and PV systems by considering their strengths, weaknesses, opportunities, and threats (SWOT). The input data of the SWOT analysis were obtained from relevant shareholders from the government, power producers, minigrid, off-grid, and private companies in Rwanda. Lastly, the technical and economical feasibilities of CSP and PV microgrid systems in off-grid areas of Rwanda were conducted using the system advisor model (SAM). The simulation results indicate that the off-grid PV microgrid system for the rural community is the most cost-effective because of its low net present cost (NPC). According to the past literature, the outcomes of this paper through the SWOT analyses and the results obtained from the SAM model, both the CSP and PV systems could undoubtedly play a vital role in Rwanda’s rural electrification. In fact, PV systems are strongly recommended in Rwanda because they are rapid and cost-effective ways to provide utility-scale electricity for off-grid modern energy services to the millions of people who lack electricity access.

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“…Tey can also be used as charging points for EVs on long-distance routes as depicted in Figure 1. Many publications [10,11] have discussed of-grid system design.…”

Section: Introductionmentioning

confidence: 99%

PV Based Standalone DC -Micro Grid System for EV Charging Station with New GWO-ANFIS MPPTs under Partial Shading Conditions

Ragul

Shanmugasundaram

Paramasivam³

et al. 2023

International Transactions on Electrical Energy Systems

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The goal of this article is to use MPPTs (maximum power point trackers) to extort maximum power from best configuration or combine renewable resources and energy storage systems that all work together in off-grid for electric vehicle charging. The grey wolf algorithm (GWO) searches the MPP at partial shading condition (PSC) with following two consideration one is high oscillations around GMPPs, and other is that they are unable to track the new GMPPs after it has changed positions because the seeking agents will be busy around the previous GMPPs captured. Hence, in this paper, the proposed research objective is to find solutions to these two difficulties. The issue of oscillations around GMPPs was handled by combining GWO with ANFISs (adaptive Neuro-Fuzzy inference system) to gently tune output produced power at GMPPs. ANFISs are distinguished by their near-zero oscillations and precise GMPPs capturing. The second issue called they are unable to track the new GMPPs after it has changed positions is addressed in this work by using novel initialization by GWOs (Grey wolf Optimizations). In the MATLAB-Simulink and experiments demonstrate the effectiveness of the suggested GWO-ANFIS MPPTs based off-grid station for EVs (Electrical Vehicle) battery charging.

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Applicability Study of Battery Charging Stations in Off-Grid for Rural Electrification – the case of Rwanda

Cited by 5 publications

References 5 publications

Exploring Optimal Charging Strategies for Off-Grid Solar Photovoltaic Systems: A Comparative Study on Battery Storage Techniques

Exploring Optimal Charging Strategies for Off-Grid Solar Photovoltaic Systems: A Comparative Study on Battery Storage Techniques

Concentrated Solar Power and Photovoltaic Systems: A New Approach to Boost Sustainable Energy for All (Se4all) in Rwanda

PV Based Standalone DC -Micro Grid System for EV Charging Station with New GWO-ANFIS MPPTs under Partial Shading Conditions

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