Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions
The oscillations on output power and distortion of the inverter currents will occur in the case of unbalanced grid voltage faults. Constant output power and good current quality cannot be achieved simultaneously. Aiming at these problems, a coordinate control strategy for suppressing power fluctuati...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Complexity |
| Online Access: | http://dx.doi.org/10.1155/2019/5968984 |
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| _version_ | 1850160075000250368 |
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| author | Chencong Zhao Jun Liu Zhouhua Xie Feihang Zhou |
| author_facet | Chencong Zhao Jun Liu Zhouhua Xie Feihang Zhou |
| author_sort | Chencong Zhao |
| collection | DOAJ |
| description | The oscillations on output power and distortion of the inverter currents will occur in the case of unbalanced grid voltage faults. Constant output power and good current quality cannot be achieved simultaneously. Aiming at these problems, a coordinate control strategy for suppressing power fluctuations and current harmonics is proposed by analyzing instantaneous power control and current balance control. The proposed control is achieved by adjusting the weight coefficient of current reference values to change the current harmonic contents based on proportional complex integral (PCI) controller and proportional multiple complex integral (PMCI) controller. The control strategy with a simple control structure neither needs to detect harmonic components of the inverter currents, nor needs to separate the positive and negative components of voltage and current, which is easy to be realized. The feasibility and effectiveness of the proposed control are verified by the comparison and analysis of simulation. |
| format | Article |
| id | doaj-art-b1fe0071bb684908a48fd486f66c3ad0 |
| institution | OA Journals |
| issn | 1076-2787 1099-0526 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Complexity |
| spelling | doaj-art-b1fe0071bb684908a48fd486f66c3ad02025-08-20T02:23:16ZengWileyComplexity1076-27871099-05262019-01-01201910.1155/2019/59689845968984Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid ConditionsChencong Zhao0Jun Liu1Zhouhua Xie2Feihang Zhou3College of Automation, Xi’an University of Technology, No. 5 Jinhua South Road, Xi’an, ChinaCollege of Automation, Xi’an University of Technology, No. 5 Jinhua South Road, Xi’an, ChinaThermal Power Research Institute CO LTD, No. 136 Xingqing Road, Xi’an, ChinaCollege of Automation, Xi’an University of Technology, No. 5 Jinhua South Road, Xi’an, ChinaThe oscillations on output power and distortion of the inverter currents will occur in the case of unbalanced grid voltage faults. Constant output power and good current quality cannot be achieved simultaneously. Aiming at these problems, a coordinate control strategy for suppressing power fluctuations and current harmonics is proposed by analyzing instantaneous power control and current balance control. The proposed control is achieved by adjusting the weight coefficient of current reference values to change the current harmonic contents based on proportional complex integral (PCI) controller and proportional multiple complex integral (PMCI) controller. The control strategy with a simple control structure neither needs to detect harmonic components of the inverter currents, nor needs to separate the positive and negative components of voltage and current, which is easy to be realized. The feasibility and effectiveness of the proposed control are verified by the comparison and analysis of simulation.http://dx.doi.org/10.1155/2019/5968984 |
| spellingShingle | Chencong Zhao Jun Liu Zhouhua Xie Feihang Zhou Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions Complexity |
| title | Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions |
| title_full | Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions |
| title_fullStr | Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions |
| title_full_unstemmed | Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions |
| title_short | Coordinate Control of Power/Current for Grid-Connected Inverter Based on PCI Controller under Unbalanced Grid Conditions |
| title_sort | coordinate control of power current for grid connected inverter based on pci controller under unbalanced grid conditions |
| url | http://dx.doi.org/10.1155/2019/5968984 |
| work_keys_str_mv | AT chencongzhao coordinatecontrolofpowercurrentforgridconnectedinverterbasedonpcicontrollerunderunbalancedgridconditions AT junliu coordinatecontrolofpowercurrentforgridconnectedinverterbasedonpcicontrollerunderunbalancedgridconditions AT zhouhuaxie coordinatecontrolofpowercurrentforgridconnectedinverterbasedonpcicontrollerunderunbalancedgridconditions AT feihangzhou coordinatecontrolofpowercurrentforgridconnectedinverterbasedonpcicontrollerunderunbalancedgridconditions |