Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions
This paper presents an improved control strategy to cancel the double grid frequency oscillations in the active power, reactive power, and DC-link voltage of a three-phase grid-connected photovoltaic (PV) system under unbalanced grid condition. To achieve these goals, an enhanced positive–negative-s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/8/1247 |
| _version_ | 1797560365992640512 |
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| author | Saeid Abbasi Ali Asghar Ghadimi Amir Hossein Abolmasoumi Mohammad Reza Miveh Francisco Jurado |
| author_facet | Saeid Abbasi Ali Asghar Ghadimi Amir Hossein Abolmasoumi Mohammad Reza Miveh Francisco Jurado |
| author_sort | Saeid Abbasi |
| collection | DOAJ |
| description | This paper presents an improved control strategy to cancel the double grid frequency oscillations in the active power, reactive power, and DC-link voltage of a three-phase grid-connected photovoltaic (PV) system under unbalanced grid condition. To achieve these goals, an enhanced positive–negative-sequence control (PNSC) to remove oscillations of active power and an instantaneous active–reactive control (IARC) to mitigate the fluctuations of active and reactive power, simultaneously, are suggested. These methods are also effective to reduce the oscillations of the DC-link voltage. To track the desired unbalanced or harmonic reference currents, improved proportional resonant (PR) current controllers have been designed using the Bode frequency analysis. Simulation studies are carried out via Matlab/Simulink<sup>®</sup> software to verify the effectiveness of the suggested control strategies. |
| first_indexed | 2024-03-10T17:59:36Z |
| format | Article |
| id | doaj.art-0028a36d7de847e78559723abb21488b |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T17:59:36Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-0028a36d7de847e78559723abb21488b2023-11-20T08:57:08ZengMDPI AGElectronics2079-92922020-08-0198124710.3390/electronics9081247Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault ConditionsSaeid Abbasi0Ali Asghar Ghadimi1Amir Hossein Abolmasoumi2Mohammad Reza Miveh3Francisco Jurado4Department of Electrical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, IranDepartment of Electrical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, IranDepartment of Electrical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, IranDepartment of Electrical Engineering, Tafresh University, Tafresh 39518-79611, IranDepartment of Electrical Engineering, University of Jaen, 23700 Linares, SpainThis paper presents an improved control strategy to cancel the double grid frequency oscillations in the active power, reactive power, and DC-link voltage of a three-phase grid-connected photovoltaic (PV) system under unbalanced grid condition. To achieve these goals, an enhanced positive–negative-sequence control (PNSC) to remove oscillations of active power and an instantaneous active–reactive control (IARC) to mitigate the fluctuations of active and reactive power, simultaneously, are suggested. These methods are also effective to reduce the oscillations of the DC-link voltage. To track the desired unbalanced or harmonic reference currents, improved proportional resonant (PR) current controllers have been designed using the Bode frequency analysis. Simulation studies are carried out via Matlab/Simulink<sup>®</sup> software to verify the effectiveness of the suggested control strategies.https://www.mdpi.com/2079-9292/9/8/1247current controlfrequency locked-looppower controlpower oscillationunbalanced grid voltage |
| spellingShingle | Saeid Abbasi Ali Asghar Ghadimi Amir Hossein Abolmasoumi Mohammad Reza Miveh Francisco Jurado Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions Electronics current control frequency locked-loop power control power oscillation unbalanced grid voltage |
| title | Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions |
| title_full | Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions |
| title_fullStr | Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions |
| title_full_unstemmed | Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions |
| title_short | Enhanced Control Scheme for a Three-Phase Grid-Connected PV Inverter under Unbalanced Fault Conditions |
| title_sort | enhanced control scheme for a three phase grid connected pv inverter under unbalanced fault conditions |
| topic | current control frequency locked-loop power control power oscillation unbalanced grid voltage |
| url | https://www.mdpi.com/2079-9292/9/8/1247 |
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