Bernhard Fäßler

• Malavatu, Jayachandra; O'Born, Reyn Joseph; Peter, Kepplinger & Fässler, Bernhard (2022). Hybrid energy storage systems of energy- and power-dense batteries: a survey on modelling techniques and control methods. Procedia CIRP. ISSN 2212-8271. 105, s. 794–798. doi: 10.1016/j.procir.2022.02.193.
• Wrålsen, Benedikte & Fässler, Bernhard (2022). Multiple scenario analysis of battery energy storage system investment: measuring economic and circular viability. Batteries. ISSN 2313-0105. 8(2). doi: 10.3390/batteries8020007. Fulltekst i vitenarkiv Vis sammendrag

  Circular business models for batteries have been revealed in earlier research to achieve economic viability while reducing total resource consumption of raw materials. The objective of this study is to measure the economic performance of the preferred business model by creating different scenarios comparing second life (spent) and new battery investment for seven different European regions and four energy management strategies. Findings reveal levels of economic ability for a total of 34 scenarios simulated, including direct savings per kWh, a total change in energy costs per year, battery charge/discharge cycles, and comparative breakeven analyses. Regional effects are also measured based on day-ahead electricity prices and solar irradiation. The minimum payback time is 7 years before battery system investment costs are covered. The most viable energy management strategies also had the highest number of charge/discharge cycles, which decreases battery lifetime. Investment in a second life battery compared to a new battery reduced the payback time by 0.5 to 2 years due to lower investment costs. However, the estimated lifetime range (3 to 10 years) is lower compared to a new battery (5 to 15 years), which questions the circular business model viability for the scenarios studied. Energy management strategies should be combined and customized to increase economic benefits.

• Wrålsen, Benedikte; Prieto-Sandoval, Vanessa; Mejia-Villa, Andres; O'Born, Reyn Joseph; Hellström, Magnus Mikael & Fässler, Bernhard (2021). Circular business models for lithium-ion batteries - Stakeholders, barriers, and drivers. Journal of Cleaner Production. ISSN 0959-6526. 317. doi: 10.1016/j.jclepro.2021.128393. Fulltekst i vitenarkiv
• Fässler, Bernhard & Jakobsen, Aleksander Bogunovic (2021). Autonomous Operation of Stationary Battery Energy Storage Systems—Optimal Storage Design and Economic Potential . Energies. ISSN 1996-1073. 14(5). doi: 10.3390/en14051333. Fulltekst i vitenarkiv
• Fässler, Bernhard (2021). Stationary, Second Use Battery Energy Storage Systems and Their Applications: A Research Review. Energies. ISSN 1996-1073. 14(8). doi: 10.3390/en14082335. Fulltekst i vitenarkiv
• Kepplinger, Peter; Fässler, Bernhard; Huber, Gerhard; Muhandiram Arachchige, Subodha Tharangi; Rheinberger, Klaus & Preißinger, Markus (2019). Autonomes Demand Side Management verteilter Energiespeicher Autonomous demand side management of distributed energy storages: Review of the scientific contributions by the ”Energy Systems and Components” research group at the Vorarlberg University of Applied Sciences. E & I. Elektrotechnik und Informationstechnik. ISSN 0932-383X. doi: 10.1007/s00502-019-00782-9. Fulltekst i vitenarkiv
• Fässler, Bernhard; Kepplinger, Peter & Petrasch, Jörg (2019). Field testing of repurposed electric vehicle batteries for price-driven grid balancing. Journal of Energy Storage. ISSN 2352-152X. 21, s. 40–47. doi: 10.1016/j.est.2018.10.010. Fulltekst i vitenarkiv
• Fässler, Bernhard; Schuler, Michael; Preißinger, Markus & Kepplinger, Peter (2017). Battery Storage Systems as Grid-Balancing Measure in Low-Voltage Distribution Grids with Distributed Generation. Energies. ISSN 1996-1073. 10(12), s. 1–14. doi: 10.3390/en10122161.
• Fässler, Bernhard; Kepplinger, Peter & Petrasch, Jörg (2017). Decentralized price-driven grid balancing via repurposed electric vehicle batteries. Energy. ISSN 0360-5442. 118, s. 446–455. doi: 10.1016/j.energy.2016.12.013.
• Fässler, Bernhard; Kepplinger, P; Kolhe, Mohan Lal & Petrasch, J (2015). Decentralized on-site optimization of a battery storage system using one-way communication. I NN, NN (Red.), The 4th IET Renewable Power Generation Conference, IET RPG 2015. IET Digital Library. ISSN 978-1-78561-040-0. doi: 10.1049/cp.2015.0304.

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• Fässler, Bernhard & Birkeland , Terese (2021). Research and regulatory obstacles for stationary second use battery energy storage systems. Vis sammendrag

  The global demand for electricity is rising due to the increased electrification of multiple sectors of economic activity and an increased focus on sustainable consumption. Simultaneously, the share of cleaner electricity generated by transient, renewable sources such as wind and solar energy is increasing. This has made additional buffer capacities for electrical grids necessary. Battery energy storage systems have been investigated as storage solutions due to their responsiveness, efficiency, and scalability. Storage systems based on the second use of discarded electric vehicle batteries have been identified as cost-efficient and sustainable alternatives to first use battery storage systems. Large quantities of such batteries with a variety of capacities and chemistries are expected to be available in the future, as electric vehicles are more widely adopted. These batteries usually still possess about 80% of their initial capacity and can be used in storage solutions for high-energy as well as high-power applications, and even hybrid solutions encompassing both. The presentation will highlight potential applications for second use battery energy storage systems making use of decommissioned electric vehicle batteries. It shows ongoing research on second use battery energy storage systems within Europe and compares it to activities outside of Europe. The presentation will also identify economic, environmental, technological, and regulatory obstacles to the incorporation of repurposed batteries in second use battery energy storage systems and lists the developments needed to allow their future uptake. Especially regulatory obstacles need to be overcome. This will be addressed through assessing implications of EU battery legislation. In December 2020, the European Commission put forth their proposal for a battery regulation. The regulation proposal both updates the targets from the battery directive from 2006 in addition to regulating the upstream part of the battery value chain. In other words, the Commission seeks to regulate the entire battery value chain with this being proposed as the first product-specific regulation under the European Green Deal and Circular Economy Action Plan. Potential impacts this regulation proposal will have on the market for reuse, second life and recycling of batteries in Europe will be discussed.

• Fässler, Bernhard (2020). Battery Seminar.
• Fässler, Bernhard (2019). Characterization, reassembly, and battery control of second use battery storage systems.
• Fässler, Bernhard; Choux, Martin Marie Hubert & Wrålsen, Benedikte (2019). Trailblazing Resource Management Through the Upcoming Battery Wave.
• Wrålsen, Benedikte; Fässler, Bernhard; Choux, Martin Marie Hubert & Wrålsen, Benedikte (2019). Batterier og sirkulær økonomi - forskning ved UiA.
• Fässler, Bernhard (2019). Battery Activities at the University of Agder.
• Fässler, Bernhard (2018). Defense Presentation: Autonomous Optimization of Repurposed Electric Vehicle Batteries for Grid Balancing.
• Fässler, Bernhard (2018). Trial Lecture: Scaling up a storage system with autonomous optimization of repurposed electric vehicle batteries for grid balancing: methods and techno-economic challenges.
• Fässler, Bernhard (2018). Wasserkraft und Energiespeicher Batteriespeicher-Szenarios.
• Fässler, Bernhard (2018). A Method for Grid Simulation Assessing Demand Side Management Strategies.
• Fässler, Bernhard (2018). Reuse of Lithium-Ion Electric Vehicle Batteries for Stationary Applications (ReLIEVe).
• Fässler, Bernhard (2017). Autonomous, decentralized battery storage systems for load balancing in low voltage distribution grids.
• Fässler, Bernhard (2015). Decentralized on-site optimization of a battery storage system using one-way communication.
• Fässler, Bernhard; Kolhe, Mohan Lal & Petrasch, Jörg (2018). Autonomous Optimization of Repurposed Electric Vehicle Batteries for Grid Balancing: Doctoral Dissertation for the Degree of Doctor of Philosophy (PhD) at the Faculty of Engineering and Science, Specialization in Renewable Energy. Universitetet i Agder. ISSN 978-82-7117-892-5. Fulltekst i vitenarkiv

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