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A Power Buffer in an Electric Driveline: Two Batteries Are Better Than One
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.ORCID iD: 0000-0002-4350-5194
2014 (English)In: ISRN Automotive Engineering, Vol. 2014, 9- p.Article in journal (Refereed) Published
Abstract [en]

Fuel cells and high energy density batteries have limited overrated capacity and slow power response. Ultracapacitors and flywheels are proposed to overcome these limitations and to facilitate regenerative braking in hybrid and electric vehicles. The simulations presented in this paper show that a Secondary Energy Storage Unit (SESU) enhances the performance of the drivelines as previously suggested and provides additional improvements. A combined design of the primary energy source and the SESU reduces the total weight and volume and increases the battery lifetime. A full-electric driveline is simulated using a standard EPA FTP-75 drive cycle. Then the same vehicle is simulated with as SESU and the results are compared. The same is done for a hybrid driveline. Two drivelines are used as references and then enhanced with an SESU; four simulations are presented in total. Simulation results show that an energy storage device with very low energy and high power allows better battery selection and energy management.

Place, publisher, year, edition, pages
2014. Vol. 2014, 9- p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-237487DOI: 10.1155/2014/525630OAI: oai:DiVA.org:uu-237487DiVA: diva2:768087
Available from: 2014-12-03 Created: 2014-12-03 Last updated: 2015-12-08

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Santiago, Juan deBurmeister, FlorianLundin, JohanOliveira, Janaina Goncalves de

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