Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)

Topology and Efficiency Analysis of Utility-Scale Battery Energy Storage Systems

Authors
Anupam Parlikar, Holger Hesse, Andreas Jossen
Corresponding Author
Anupam Parlikar
Available Online November 2019.
Keywords
energy storage, lithium-ion battery, efficiency, battery energy storage system
Abstract

Energy storage is an important flexibility measure to stabilize and secure the electrical energy supply system. Lithium-ion battery energy systems (BESS) are, owing to their characteristics, uniquely poised to support and augment the functioning of the energy supply system. It is crucial to identify and analyze the factors which play a role in their efficient and effective operation. This paper identifies and analyses three such major factors - application scenarios, power electronics with power distribution strategies, and battery parameters which influence the efficiency of a BESS. The applications analyzed are primary control reserve and peak shaving. Two Power electronics topologies and their load distribution strategies are presented, with their influence on the conversion efficiency being evaluated subsequently. Two commercial lithium-ion technologies - a Lithium Iron Phosphate cathode/Graphite anode cell and a Lithium Nickel Manganese Cobalt Oxide cathode/Graphite anode cell are also simulated for two states of health (SOH). The aged cells are considered to possess a capacity equal to 80% of original nominal capacity and a cell resistance twice that of the new cells. It is found that the system conversion efficiency can be greatly improved in applications with low active charge-based and high temporal utilization ratios by deploying a suitable power electronics topology and load distribution strategy. For applications with high active charge-based and low temporal utilization ratios, the battery resistance and the serial-parallel combination play an important role.

Copyright
© 2019, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)
Series
Atlantis Highlights in Engineering
Publication Date
November 2019
ISBN
978-94-6252-836-9
ISSN
2589-4943
Copyright
© 2019, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Anupam Parlikar
AU  - Holger Hesse
AU  - Andreas Jossen
PY  - 2019/11
DA  - 2019/11
TI  - Topology and Efficiency Analysis of Utility-Scale Battery Energy Storage Systems
BT  - Proceedings of the 13th International Renewable Energy Storage Conference 2019 (IRES 2019)
PB  - Atlantis Press
SP  - 119
EP  - 131
SN  - 2589-4943
UR  - https://www.atlantis-press.com/article/125923324
ID  - Parlikar2019/11
ER  -