Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation
An adaptive droop control with constant voltage regulation is proposed for the power and voltage management of a DC microgrid (DCMG) with multiple power sources, such as a utility grid (UG), a distributed generator (DG), an energy storage system (ESS), and an electric vehicle (EV). In the proposed s...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9982446/ |
| _version_ | 1798004810866229248 |
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| author | Al Faris Habibullah Kyeong-Hwa Kim |
| author_facet | Al Faris Habibullah Kyeong-Hwa Kim |
| author_sort | Al Faris Habibullah |
| collection | DOAJ |
| description | An adaptive droop control with constant voltage regulation is proposed for the power and voltage management of a DC microgrid (DCMG) with multiple power sources, such as a utility grid (UG), a distributed generator (DG), an energy storage system (ESS), and an electric vehicle (EV). In the proposed scheme, the droop characteristics for the UG, ESS, and EV are adaptively changed according to electricity price conditions and state-of-charge (SOC) levels in order to optimize the DCMG operation flexibility as well as electricity cost. The proposed control method not only ensures the power-sharing of DCMG reliably without the use of a communication link, but also regulates the DC bus voltage stably at the nominal value. To achieve this, the proposed scheme consists of primary control and secondary control. The primary control is used to achieve power-sharing in the decentralized DCMG, while the secondary control is used to overcome the disadvantage of conventional droop control, i.e., to remove DC bus voltage deviations. Decentralized power management is also presented to enhance the DCMG system reliability in the presence of uncertainties such as DG generation power, the ESS and EV SOC levels, the grid and EV availabilities, the load demand, and electricity price conditions. The effectiveness of the proposed scheme is demonstrated in a comprehensive simulation and experiment under various conditions. The test results clearly confirm the control flexibility and overall performance of the proposed control scheme for decentralized DCMG system. |
| first_indexed | 2024-04-11T12:29:15Z |
| format | Article |
| id | doaj.art-8e26e246f19d45acbe99ef7112649c46 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-11T12:29:15Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-8e26e246f19d45acbe99ef7112649c462022-12-22T04:23:50ZengIEEEIEEE Access2169-35362022-01-011012949012950410.1109/ACCESS.2022.32287039982446Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage RegulationAl Faris Habibullah0https://orcid.org/0000-0003-0667-8544Kyeong-Hwa Kim1https://orcid.org/0000-0001-5251-6322Department of Electrical and Information Engineering, Research Center for Electrical and Information Technology, Seoul National University of Science and Technology, Nowon, Seoul, South KoreaDepartment of Electrical and Information Engineering, Research Center for Electrical and Information Technology, Seoul National University of Science and Technology, Nowon, Seoul, South KoreaAn adaptive droop control with constant voltage regulation is proposed for the power and voltage management of a DC microgrid (DCMG) with multiple power sources, such as a utility grid (UG), a distributed generator (DG), an energy storage system (ESS), and an electric vehicle (EV). In the proposed scheme, the droop characteristics for the UG, ESS, and EV are adaptively changed according to electricity price conditions and state-of-charge (SOC) levels in order to optimize the DCMG operation flexibility as well as electricity cost. The proposed control method not only ensures the power-sharing of DCMG reliably without the use of a communication link, but also regulates the DC bus voltage stably at the nominal value. To achieve this, the proposed scheme consists of primary control and secondary control. The primary control is used to achieve power-sharing in the decentralized DCMG, while the secondary control is used to overcome the disadvantage of conventional droop control, i.e., to remove DC bus voltage deviations. Decentralized power management is also presented to enhance the DCMG system reliability in the presence of uncertainties such as DG generation power, the ESS and EV SOC levels, the grid and EV availabilities, the load demand, and electricity price conditions. The effectiveness of the proposed scheme is demonstrated in a comprehensive simulation and experiment under various conditions. The test results clearly confirm the control flexibility and overall performance of the proposed control scheme for decentralized DCMG system.https://ieeexplore.ieee.org/document/9982446/Adaptive droop controlconstant voltage regulationDC microgriddecentralized power managementsecondary control |
| spellingShingle | Al Faris Habibullah Kyeong-Hwa Kim Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation IEEE Access Adaptive droop control constant voltage regulation DC microgrid decentralized power management secondary control |
| title | Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation |
| title_full | Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation |
| title_fullStr | Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation |
| title_full_unstemmed | Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation |
| title_short | Decentralized Power Management of DC Microgrid Based on Adaptive Droop Control With Constant Voltage Regulation |
| title_sort | decentralized power management of dc microgrid based on adaptive droop control with constant voltage regulation |
| topic | Adaptive droop control constant voltage regulation DC microgrid decentralized power management secondary control |
| url | https://ieeexplore.ieee.org/document/9982446/ |
| work_keys_str_mv | AT alfarishabibullah decentralizedpowermanagementofdcmicrogridbasedonadaptivedroopcontrolwithconstantvoltageregulation AT kyeonghwakim decentralizedpowermanagementofdcmicrogridbasedonadaptivedroopcontrolwithconstantvoltageregulation |