A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation
With the rapid growth of electric vehicles (EVs) in recent years, the research on their energy storage systems (ESSs) has also shown great popularity. A traditional ESS normally has a fixed configuration and uses a single type of energy storage unit. However, this traditional design has some limitat...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Sciendo
2022-01-01
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| Series: | Power Electronics and Drives |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pead-2022-0006 |
| _version_ | 1811159402547249152 |
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| author | Jiang Bowen Liu Yujing |
| author_facet | Jiang Bowen Liu Yujing |
| author_sort | Jiang Bowen |
| collection | DOAJ |
| description | With the rapid growth of electric vehicles (EVs) in recent years, the research on their energy storage systems (ESSs) has also shown great popularity. A traditional ESS normally has a fixed configuration and uses a single type of energy storage unit. However, this traditional design has some limitations, such as low flexibility and high requirements to unit consistency. To solve these problems, a new hybrid energy storage system is proposed in this paper. The proposed ESS hybridises multiple lithium-ion battery modules and one supercapacitor module. By controlling the states of switches inside the ESS topology, module level reconfiguration can be achieved. Further, a DC/DC converter is also included in the ESS topology, which is connected to the supercapacitor module and can be used to ensure correct ESS output voltage. Reconfiguration and active balancing algorithms are also given based on the proposed ESS topology. Situations with and without bypassing the lithium-ion battery modules are both discussed in the algorithms. The proposed hybrid ESS is finally verified with simulations. The system model is built in the Simulink/MATLAB environment. Simulation results show that the lithium-ion modules with a lower state of charge values have higher priorities to be connected in parallel. Reconfiguration actions are able to balance all lithium-ion battery modules within one Worldwide Harmonised Light-Duty Vehicle Test Cycle (WLTC) simulation cycle while maintaining ESS output voltage within a correct range. Furthermore, the proposed hybrid ESS control algorithms remain valid when one lithium-ion battery module is manually bypassed during simulation. |
| first_indexed | 2024-04-10T05:40:26Z |
| format | Article |
| id | doaj.art-e002684a473b4902ad285955cc648d53 |
| institution | Directory Open Access Journal |
| issn | 2543-4292 |
| language | English |
| last_indexed | 2024-04-10T05:40:26Z |
| publishDate | 2022-01-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Power Electronics and Drives |
| spelling | doaj.art-e002684a473b4902ad285955cc648d532023-03-06T10:30:09ZengSciendoPower Electronics and Drives2543-42922022-01-0171688310.2478/pead-2022-0006A Hybrid Energy Storage System with Reconfigurability and Fast EqualisationJiang Bowen0Liu Yujing1Department of Electrical Engineering, Chalmers University of Technology, Gothenburg41296, SwedenDepartment of Electrical Engineering, Chalmers University of Technology, Gothenburg41296, SwedenWith the rapid growth of electric vehicles (EVs) in recent years, the research on their energy storage systems (ESSs) has also shown great popularity. A traditional ESS normally has a fixed configuration and uses a single type of energy storage unit. However, this traditional design has some limitations, such as low flexibility and high requirements to unit consistency. To solve these problems, a new hybrid energy storage system is proposed in this paper. The proposed ESS hybridises multiple lithium-ion battery modules and one supercapacitor module. By controlling the states of switches inside the ESS topology, module level reconfiguration can be achieved. Further, a DC/DC converter is also included in the ESS topology, which is connected to the supercapacitor module and can be used to ensure correct ESS output voltage. Reconfiguration and active balancing algorithms are also given based on the proposed ESS topology. Situations with and without bypassing the lithium-ion battery modules are both discussed in the algorithms. The proposed hybrid ESS is finally verified with simulations. The system model is built in the Simulink/MATLAB environment. Simulation results show that the lithium-ion modules with a lower state of charge values have higher priorities to be connected in parallel. Reconfiguration actions are able to balance all lithium-ion battery modules within one Worldwide Harmonised Light-Duty Vehicle Test Cycle (WLTC) simulation cycle while maintaining ESS output voltage within a correct range. Furthermore, the proposed hybrid ESS control algorithms remain valid when one lithium-ion battery module is manually bypassed during simulation.https://doi.org/10.2478/pead-2022-0006energy storage systemsreconfigurationactive balancingelectric vehicles |
| spellingShingle | Jiang Bowen Liu Yujing A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation Power Electronics and Drives energy storage systems reconfiguration active balancing electric vehicles |
| title | A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation |
| title_full | A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation |
| title_fullStr | A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation |
| title_full_unstemmed | A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation |
| title_short | A Hybrid Energy Storage System with Reconfigurability and Fast Equalisation |
| title_sort | hybrid energy storage system with reconfigurability and fast equalisation |
| topic | energy storage systems reconfiguration active balancing electric vehicles |
| url | https://doi.org/10.2478/pead-2022-0006 |
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