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Mr. Abraham Kebede
Vrije Universiteit Brussel

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Research Keywords & Expertise

0 Matlab
0 Optimisation
0 Performance Analysis
0 Techno-economic Analysis
0 photovoltaic

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Short Biography

Abraham Alem has completed his bachelor degree in Electrical engineering at Adama science & technology University and his master’s degree in Electrical power engineering at Bahir Dar University, Technology Institute, Ethiopia. For the past four years, he worked as a lecturer at Jimma University, Technology Institute under the faculty of Electrical and computer engineering. Currently, he is a PhD student in MOBI’s Battery Innovation Centre at Vrije Universiteit Brussel (VUB). His research interest focuses on Renewable energy technologies, Battery energy storage systems and in particular on second life battery utilization for stationary applications.

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Journal article
Published: 07 June 2021 in Journal of Energy Storage
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Grid-connected renewable energy systems are considered a viable solution for satisfying the swiftly growing demand. Nevertheless, the intermittent nature of renewable energy sources (RESs) hinders their performance and can not be efficiently utilized, rather imposes power quality and instability problem on the grid system. To alleviate this challenge, it is common practice to integrate RESs with efficient battery energy storage technologies. Lead-acid batteries were playing the leading role utilized as stationary energy storage systems. However, currently, there are other battery technologies like lithium-ion (Li-ion), which are used in stationary storage applications though there is uncertainty in its cost-effectiveness. In this paper, a state-of-the-art simulation model and techno-economic analysis of Li-ion and lead-acid batteries integrated with Photovoltaic Grid-Connected System (PVGCS) were performed with consideration of real commercial load profiles and resource data. The Hybrid Optimization Model for Electric Renewables (HOMER) was used for the study of the techno-economic analysis. Besides, the performance of these batteries is greatly affected by the rate of charge and discharge cycling effects which gradually degrades the capacity of the battery. This effect was also investigated with Matlab using a simplified equivalent circuit model by considering a typical stationary application datasheet. The techno-economic simulation output provided that the system with Li-ion battery resulted in a Levelized Cost of Energy (LCOE) of 0.32 €/kWh compared to the system with lead-acid battery with LCOE of 0.34 €/kWh. Besides, the Net Present Cost (NPC) of the system with Li-ion batteries is found to be €14399 compared to the system with the lead-acid battery resulted in an NPC of €15106. According to the result found, Li-ion batteries are techno-economically more viable than lead-acid batteries under the considered specifications and application profile.

ACS Style

Abraham Alem Kebede; Thierry Coosemans; Maarten Messagie; Towfik Jemal; Henok Ayele Behabtu; Joeri Van Mierlo; Maitane Berecibar. Techno-economic analysis of lithium-ion and lead-acid batteries in stationary energy storage application. Journal of Energy Storage 2021, 40, 102748 .

AMA Style

Abraham Alem Kebede, Thierry Coosemans, Maarten Messagie, Towfik Jemal, Henok Ayele Behabtu, Joeri Van Mierlo, Maitane Berecibar. Techno-economic analysis of lithium-ion and lead-acid batteries in stationary energy storage application. Journal of Energy Storage. 2021; 40 ():102748.

Chicago/Turabian Style

Abraham Alem Kebede; Thierry Coosemans; Maarten Messagie; Towfik Jemal; Henok Ayele Behabtu; Joeri Van Mierlo; Maitane Berecibar. 2021. "Techno-economic analysis of lithium-ion and lead-acid batteries in stationary energy storage application." Journal of Energy Storage 40, no. : 102748.

Review
Published: 15 December 2020 in Sustainability
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Renewable energy sources (RESs) such as wind and solar are frequently hit by fluctuations due to, for example, insufficient wind or sunshine. Energy storage technologies (ESTs) mitigate the problem by storing excess energy generated and then making it accessible on demand. While there are various EST studies, the literature remains isolated and dated. The comparison of the characteristics of ESTs and their potential applications is also short. This paper fills this gap. Using selected criteria, it identifies key ESTs and provides an updated review of the literature on ESTs and their application potential to the renewable energy sector. The critical review shows a high potential application for Li-ion batteries and most fit to mitigate the fluctuation of RESs in utility grid integration sector. However, for Li-ion batteries to be fully adopted in the RESs utility grid integration, their cost needs to be reduced.

ACS Style

Henok Behabtu; Maarten Messagie; Thierry Coosemans; Maitane Berecibar; Kinde Anlay Fante; Abraham Kebede; Joeri Mierlo. A Review of Energy Storage Technologies’ Application Potentials in Renewable Energy Sources Grid Integration. Sustainability 2020, 12, 10511 .

AMA Style

Henok Behabtu, Maarten Messagie, Thierry Coosemans, Maitane Berecibar, Kinde Anlay Fante, Abraham Kebede, Joeri Mierlo. A Review of Energy Storage Technologies’ Application Potentials in Renewable Energy Sources Grid Integration. Sustainability. 2020; 12 (24):10511.

Chicago/Turabian Style

Henok Behabtu; Maarten Messagie; Thierry Coosemans; Maitane Berecibar; Kinde Anlay Fante; Abraham Kebede; Joeri Mierlo. 2020. "A Review of Energy Storage Technologies’ Application Potentials in Renewable Energy Sources Grid Integration." Sustainability 12, no. 24: 10511.

Journal article
Published: 16 September 2020 in Sustainability
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The system under consideration in this paper consists of a photovoltaic (PV) array, described as having a 10 kWp capacity, battery storage, and connection to the grid via a university grid network. It is stated that the system meets a local load of 4–5 kVA. The system is in Ethiopia, and the authors give details of the location and solar resource to provide information to assess its performance. However, the performance assessment will be specific to the details of the installation and the operational rules, including the variable nature of the load profile, charging and discharging the battery storage, and importing from and exporting to the university grid. The nearby load is mostly supplied from PV and grid sources, and hence the battery installed is found to be idle, showing that the PV together with storage battery system was not utilized in an efficient and optimized way. This in turn resulted in inefficient utilization of sources, increased dependency of the load on the grid, and hence unnecessary operational expenses. Therefore, to alleviate these problems, this paper proposes a means for techno-economic optimization and performance analysis of an existing photovoltaic grid-connected system (PVGCS) by using collected data from a plant data logger for one year (2018) with a model-based Matlab/Simulink simulation and a hybrid optimization model for electric renewables (HOMER) software. According to the simulation result, the PVGCS with 5 kWp PV array optimized system was recommended, which provides a net present cost (NPC) of 5770 (€/kWh), and a cost of energy (COE) of 0.087 (€/kWh) compared to an existing 10 kWp PV system, which results in a NPC value of 6047 (€/kWh) and COE of 0.098 (€/kWh). Therefore, the resulting 5 kWp PV system connected with a storage battery was found to be more efficient and techno-economically viable as compared to the existing 10 kWp PVGCS plant.

ACS Style

Abraham Kebede; Maitane Berecibar; Thierry Coosemans; Maarten Messagie; Towfik Jemal; Henok Behabtu; Joeri Van Mierlo. A Techno-Economic Optimization and Performance Assessment of a 10 kWP Photovoltaic Grid-Connected System. Sustainability 2020, 12, 7648 .

AMA Style

Abraham Kebede, Maitane Berecibar, Thierry Coosemans, Maarten Messagie, Towfik Jemal, Henok Behabtu, Joeri Van Mierlo. A Techno-Economic Optimization and Performance Assessment of a 10 kWP Photovoltaic Grid-Connected System. Sustainability. 2020; 12 (18):7648.

Chicago/Turabian Style

Abraham Kebede; Maitane Berecibar; Thierry Coosemans; Maarten Messagie; Towfik Jemal; Henok Behabtu; Joeri Van Mierlo. 2020. "A Techno-Economic Optimization and Performance Assessment of a 10 kWP Photovoltaic Grid-Connected System." Sustainability 12, no. 18: 7648.