Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system
In stand-alone dc microgrids, battery energy storage systems (BESSs) are conventionally used for regulating the dc-link voltage, causing a continuous battery operation. Though operating the photovoltaic (PV) system at its maximum power point yields minimum battery discharge current, the opposite is...
| 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/10356/162534 |
| _version_ | 1826110582209642496 |
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| author | Yan, Hein Wai Farivar, Glen G. Beniwal, Neha Tafti, Hossein Dehghani Ceballos, Salvador Pou, Josep Konstantinou, Georgios |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Yan, Hein Wai Farivar, Glen G. Beniwal, Neha Tafti, Hossein Dehghani Ceballos, Salvador Pou, Josep Konstantinou, Georgios |
| author_sort | Yan, Hein Wai |
| collection | NTU |
| description | In stand-alone dc microgrids, battery energy storage systems (BESSs) are conventionally used for regulating the dc-link voltage, causing a continuous battery operation. Though operating the photovoltaic (PV) system at its maximum power point yields minimum battery discharge current, the opposite is true for battery charging current. Therefore, reducing the battery charging current based on its state-of-charge (SoC) and the amount of available PV surplus power (which can be treated as virtually stored energy) is an opportunity for improving the battery life. The main objective of the control strategy proposed in this paper is to prolong the battery lifetime by reducing the charging current and keeping the battery SoC at lower values if the PV power is enough to supply the loads. Additionally, the PV system is used as the primary asset to regulate the microgrid voltage. The dynamic performance of the proposed control strategy is validated with experimental tests under various operating conditions. Furthermore, its effectiveness in prolonging the battery lifetime is evaluated using an aging model of a Li-ion battery (without loss of generality) by simulated case studies. |
| first_indexed | 2024-10-01T02:36:31Z |
| format | Journal Article |
| id | ntu-10356/162534 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:36:31Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1625342022-11-05T23:31:29Z Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system Yan, Hein Wai Farivar, Glen G. Beniwal, Neha Tafti, Hossein Dehghani Ceballos, Salvador Pou, Josep Konstantinou, Georgios School of Electrical and Electronic Engineering Energy Research Institute @ NTU (ERI@N) Engineering::Electrical and electronic engineering::Power electronics Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution Battery Energy Storage System Battery Lifetime Extension In stand-alone dc microgrids, battery energy storage systems (BESSs) are conventionally used for regulating the dc-link voltage, causing a continuous battery operation. Though operating the photovoltaic (PV) system at its maximum power point yields minimum battery discharge current, the opposite is true for battery charging current. Therefore, reducing the battery charging current based on its state-of-charge (SoC) and the amount of available PV surplus power (which can be treated as virtually stored energy) is an opportunity for improving the battery life. The main objective of the control strategy proposed in this paper is to prolong the battery lifetime by reducing the charging current and keeping the battery SoC at lower values if the PV power is enough to supply the loads. Additionally, the PV system is used as the primary asset to regulate the microgrid voltage. The dynamic performance of the proposed control strategy is validated with experimental tests under various operating conditions. Furthermore, its effectiveness in prolonging the battery lifetime is evaluated using an aging model of a Li-ion battery (without loss of generality) by simulated case studies. National Research Foundation (NRF) Submitted/Accepted version This work was supported in part by the Republic of Singapore's National Research Foundation (NRF) through “Distributed Energy Resource Management System for Energy Grid 2.0” project at Energy Research Institute @ Nanyang Technological University, and in part by the Office of Naval Research Global under Grant N62909-19-1-2081. 2022-10-31T05:02:30Z 2022-10-31T05:02:30Z 2022 Journal Article Yan, H. W., Farivar, G. G., Beniwal, N., Tafti, H. D., Ceballos, S., Pou, J. & Konstantinou, G. (2022). Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system. IEEE Journal of Emerging and Selected Topics in Power Electronics. https://dx.doi.org/10.1109/JESTPE.2022.3212702 2168-6777 https://hdl.handle.net/10356/162534 10.1109/JESTPE.2022.3212702 2-s2.0-85139860208 en N62909-19-1-2081 IEEE Journal of Emerging and Selected Topics in Power Electronics © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: https://doi.org/10.1109/JESTPE.2022.3212702. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering::Power electronics Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution Battery Energy Storage System Battery Lifetime Extension Yan, Hein Wai Farivar, Glen G. Beniwal, Neha Tafti, Hossein Dehghani Ceballos, Salvador Pou, Josep Konstantinou, Georgios Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system |
| title | Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system |
| title_full | Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system |
| title_fullStr | Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system |
| title_full_unstemmed | Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system |
| title_short | Battery lifetime extension in a stand-alone microgrid with flexible power point tracking of photovoltaic system |
| title_sort | battery lifetime extension in a stand alone microgrid with flexible power point tracking of photovoltaic system |
| topic | Engineering::Electrical and electronic engineering::Power electronics Engineering::Electrical and electronic engineering::Electric power::Production, transmission and distribution Battery Energy Storage System Battery Lifetime Extension |
| url | https://hdl.handle.net/10356/162534 |
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