An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation
This paper presents a current suppression method based on a droop control strategy under distorted grid voltage with inter-harmonics and fundamental frequency fluctuation. In this proposed strategy, the current incomplete derivation controller is employed to decrease the negative impact caused by ha...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/10/15/1827 |
| _version_ | 1797525706298621952 |
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| author | Wanwan Xu Bin Wang Jiang Liu Da Li |
| author_facet | Wanwan Xu Bin Wang Jiang Liu Da Li |
| author_sort | Wanwan Xu |
| collection | DOAJ |
| description | This paper presents a current suppression method based on a droop control strategy under distorted grid voltage with inter-harmonics and fundamental frequency fluctuation. In this proposed strategy, the current incomplete derivation controller is employed to decrease the negative impact caused by harmonic and inter-harmonic grid voltage. This method provides a good dynamic response and has low complexity against the inter-harmonics with unfixed fundamental frequency. Based on a mathematical model of the grid-connected inverter, we designed novel instantaneous frequency detection and feed-forward methods to suppress the grid fundamental frequency fluctuation impacts. Then the main parameters were analyzed. The simulation and experimental results verified the feasibility and effectiveness of the proposed method. |
| first_indexed | 2024-03-10T09:16:51Z |
| format | Article |
| id | doaj.art-390e5a668f004834b1d969ab109b7426 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T09:16:51Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-390e5a668f004834b1d969ab109b74262023-11-22T05:31:32ZengMDPI AGElectronics2079-92922021-07-011015182710.3390/electronics10151827An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency FluctuationWanwan Xu0Bin Wang1Jiang Liu2Da Li3School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, ChinaSchool of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, ChinaSchool of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, ChinaShenzhen Hopewind Electric Co., Ltd., Shenzhen 518127, ChinaThis paper presents a current suppression method based on a droop control strategy under distorted grid voltage with inter-harmonics and fundamental frequency fluctuation. In this proposed strategy, the current incomplete derivation controller is employed to decrease the negative impact caused by harmonic and inter-harmonic grid voltage. This method provides a good dynamic response and has low complexity against the inter-harmonics with unfixed fundamental frequency. Based on a mathematical model of the grid-connected inverter, we designed novel instantaneous frequency detection and feed-forward methods to suppress the grid fundamental frequency fluctuation impacts. Then the main parameters were analyzed. The simulation and experimental results verified the feasibility and effectiveness of the proposed method.https://www.mdpi.com/2079-9292/10/15/1827droop controlgrid-connectedinter-harmonicsincomplete derivationinstantaneous frequency detection |
| spellingShingle | Wanwan Xu Bin Wang Jiang Liu Da Li An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation Electronics droop control grid-connected inter-harmonics incomplete derivation instantaneous frequency detection |
| title | An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation |
| title_full | An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation |
| title_fullStr | An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation |
| title_full_unstemmed | An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation |
| title_short | An Improved Droop Control Strategy for Grid-Connected Inverter Applied in Grid Voltage Inter-Harmonics and Fundamental Frequency Fluctuation |
| title_sort | improved droop control strategy for grid connected inverter applied in grid voltage inter harmonics and fundamental frequency fluctuation |
| topic | droop control grid-connected inter-harmonics incomplete derivation instantaneous frequency detection |
| url | https://www.mdpi.com/2079-9292/10/15/1827 |
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