Energy Storage Bidirectional DC-DC Converter Model Predictive Control
Aiming at the voltage fluctuation of DC microgrid bus caused by the power fluctuation of distributed power supply and switching of constant power load (CPL), this paper proposes a model predictive control (MPC) strategy with nonlinear observer, which is applied to bidirectional DC-DC converter for e...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Tamkang University Press
2023-08-01
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| Series: | Journal of Applied Science and Engineering |
| Subjects: | |
| Online Access: | http://jase.tku.edu.tw/articles/jase-202401-27-1-0015 |
| _version_ | 1797740159019515904 |
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| author | Feng Zhao Dong Li Xiaoqiang Chen Ying Wang |
| author_facet | Feng Zhao Dong Li Xiaoqiang Chen Ying Wang |
| author_sort | Feng Zhao |
| collection | DOAJ |
| description | Aiming at the voltage fluctuation of DC microgrid bus caused by the power fluctuation of distributed power supply and switching of constant power load (CPL), this paper proposes a model predictive control (MPC) strategy with nonlinear observer, which is applied to bidirectional DC-DC converter for energy storage. First, a small disturbance model of the system with converter control is established, the influence of photovoltaic unit and constant power load on the system stability is analyzed, and then the objective function is constructed according to the bidirectional DC-DC converter, the optimization equation is established and the optimal control rate is obtained. Second, a nonlinear state observer is established and a composite control strategy is designedto adjust the charging and discharging process of the battery, realize the power balance between the source and load of the DC microgrid, and ensure the stability of the DC microgrid. Finally, a simulation model is built in Simulink and the results are analyzed, and the simulation results show that the proposed control strategy has good dynamics and robustness compared with the traditional double-closed-loop PI control when the constant power load is frequently switched and the photovoltaic power generation power fluctuates. |
| first_indexed | 2024-03-12T14:08:35Z |
| format | Article |
| id | doaj.art-4eff3266d4a94de3b56544fb567d4de5 |
| institution | Directory Open Access Journal |
| issn | 2708-9967 2708-9975 |
| language | English |
| last_indexed | 2024-03-12T14:08:35Z |
| publishDate | 2023-08-01 |
| publisher | Tamkang University Press |
| record_format | Article |
| series | Journal of Applied Science and Engineering |
| spelling | doaj.art-4eff3266d4a94de3b56544fb567d4de52023-08-21T09:08:45ZengTamkang University PressJournal of Applied Science and Engineering2708-99672708-99752023-08-01271975198310.6180/jase.202401_27(1).0015Energy Storage Bidirectional DC-DC Converter Model Predictive ControlFeng Zhao0Dong Li1Xiaoqiang Chen2Ying Wang3School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaSchool of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, ChinaAiming at the voltage fluctuation of DC microgrid bus caused by the power fluctuation of distributed power supply and switching of constant power load (CPL), this paper proposes a model predictive control (MPC) strategy with nonlinear observer, which is applied to bidirectional DC-DC converter for energy storage. First, a small disturbance model of the system with converter control is established, the influence of photovoltaic unit and constant power load on the system stability is analyzed, and then the objective function is constructed according to the bidirectional DC-DC converter, the optimization equation is established and the optimal control rate is obtained. Second, a nonlinear state observer is established and a composite control strategy is designedto adjust the charging and discharging process of the battery, realize the power balance between the source and load of the DC microgrid, and ensure the stability of the DC microgrid. Finally, a simulation model is built in Simulink and the results are analyzed, and the simulation results show that the proposed control strategy has good dynamics and robustness compared with the traditional double-closed-loop PI control when the constant power load is frequently switched and the photovoltaic power generation power fluctuates.http://jase.tku.edu.tw/articles/jase-202401-27-1-0015dc-dc bidirectional converterconstant power loadmodel predictionnonlinear observer |
| spellingShingle | Feng Zhao Dong Li Xiaoqiang Chen Ying Wang Energy Storage Bidirectional DC-DC Converter Model Predictive Control Journal of Applied Science and Engineering dc-dc bidirectional converter constant power load model prediction nonlinear observer |
| title | Energy Storage Bidirectional DC-DC Converter Model Predictive Control |
| title_full | Energy Storage Bidirectional DC-DC Converter Model Predictive Control |
| title_fullStr | Energy Storage Bidirectional DC-DC Converter Model Predictive Control |
| title_full_unstemmed | Energy Storage Bidirectional DC-DC Converter Model Predictive Control |
| title_short | Energy Storage Bidirectional DC-DC Converter Model Predictive Control |
| title_sort | energy storage bidirectional dc dc converter model predictive control |
| topic | dc-dc bidirectional converter constant power load model prediction nonlinear observer |
| url | http://jase.tku.edu.tw/articles/jase-202401-27-1-0015 |
| work_keys_str_mv | AT fengzhao energystoragebidirectionaldcdcconvertermodelpredictivecontrol AT dongli energystoragebidirectionaldcdcconvertermodelpredictivecontrol AT xiaoqiangchen energystoragebidirectionaldcdcconvertermodelpredictivecontrol AT yingwang energystoragebidirectionaldcdcconvertermodelpredictivecontrol |