A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids
This paper proposes a semi-consensus strategy for multi-functional hybrid energy storage systems (HESSs) in DC microgrids. Batteries in a HESS are regulated by conventional V-P droops and supercapacitors (SCs) are with integral droops (ID). Only batteries are assigned with local distributed compensa...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160556 |
| _version_ | 1826122864674209792 |
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| author | Lin, Pengfeng Zhao, Tianyang Wang, Benfei Wang, Yu Wang, Peng |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Lin, Pengfeng Zhao, Tianyang Wang, Benfei Wang, Yu Wang, Peng |
| author_sort | Lin, Pengfeng |
| collection | NTU |
| description | This paper proposes a semi-consensus strategy for multi-functional hybrid energy storage systems (HESSs) in DC microgrids. Batteries in a HESS are regulated by conventional V-P droops and supercapacitors (SCs) are with integral droops (ID). Only batteries are assigned with local distributed compensators which exchange information through sparse communication links. Those SCs are exempted from data exchange process, which would save system investment costs. Within the semi-consensus scheme, the most essential function is the cooperation of V-P droop and ID that helps to naturally allocate low frequency components of load power to batteries and high frequency components to SCs, thus prolonging the overall life time of HESS. In addition to the transient power allocation function, there are other three functions endowed by the proposed strategy, which are autonomous DC bus voltage recovery to its nominal level, spontaneous SC state of charge (SOC) restoration, autonomous power sharing and SOC balancing among batteries. It is the simultaneous realization of above four functions with limit communications that makes up the main contributions in this paper. A generic mathematical modeling of HESS with the semi-consensus strategy is established. The model allows for dynamic analyses to theoretically validate the effectiveness of proposed method in both frequency and time domains. In-house experimental results are shown fully consistent with the dynamic analyses and also effectively corroborate the intended HESS multi-functional operations. |
| first_indexed | 2024-10-01T05:55:12Z |
| format | Journal Article |
| id | ntu-10356/160556 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:55:12Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1605562022-07-26T08:14:10Z A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids Lin, Pengfeng Zhao, Tianyang Wang, Benfei Wang, Yu Wang, Peng School of Electrical and Electronic Engineering Energy Research Institute @ NTU (ERI@N) Rolls-Royce@NTU Corporate Lab Engineering::Electrical and electronic engineering Hybrid Energy Storage System Semi-Consensus Strategy This paper proposes a semi-consensus strategy for multi-functional hybrid energy storage systems (HESSs) in DC microgrids. Batteries in a HESS are regulated by conventional V-P droops and supercapacitors (SCs) are with integral droops (ID). Only batteries are assigned with local distributed compensators which exchange information through sparse communication links. Those SCs are exempted from data exchange process, which would save system investment costs. Within the semi-consensus scheme, the most essential function is the cooperation of V-P droop and ID that helps to naturally allocate low frequency components of load power to batteries and high frequency components to SCs, thus prolonging the overall life time of HESS. In addition to the transient power allocation function, there are other three functions endowed by the proposed strategy, which are autonomous DC bus voltage recovery to its nominal level, spontaneous SC state of charge (SOC) restoration, autonomous power sharing and SOC balancing among batteries. It is the simultaneous realization of above four functions with limit communications that makes up the main contributions in this paper. A generic mathematical modeling of HESS with the semi-consensus strategy is established. The model allows for dynamic analyses to theoretically validate the effectiveness of proposed method in both frequency and time domains. In-house experimental results are shown fully consistent with the dynamic analyses and also effectively corroborate the intended HESS multi-functional operations. 2022-07-26T08:14:10Z 2022-07-26T08:14:10Z 2019 Journal Article Lin, P., Zhao, T., Wang, B., Wang, Y. & Wang, P. (2019). A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids. IEEE Transactions On Energy Conversion, 35(1), 336-346. https://dx.doi.org/10.1109/TEC.2019.2936120 0885-8969 https://hdl.handle.net/10356/160556 10.1109/TEC.2019.2936120 2-s2.0-85071019483 1 35 336 346 en IEEE Transactions on Energy Conversion © 2019 IEEE. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Hybrid Energy Storage System Semi-Consensus Strategy Lin, Pengfeng Zhao, Tianyang Wang, Benfei Wang, Yu Wang, Peng A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids |
| title | A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids |
| title_full | A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids |
| title_fullStr | A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids |
| title_full_unstemmed | A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids |
| title_short | A semi-consensus strategy toward multi-functional hybrid energy storage system in DC microgrids |
| title_sort | semi consensus strategy toward multi functional hybrid energy storage system in dc microgrids |
| topic | Engineering::Electrical and electronic engineering Hybrid Energy Storage System Semi-Consensus Strategy |
| url | https://hdl.handle.net/10356/160556 |
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