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| Content Provider | IET Digital Library |
|---|---|
| Author | Bhattacharya, Somesh Mishra, Sukumar |
| Abstract | A control strategy is formulated for photovoltaic generators (PVG) operating in parallel in a Microgrid. A radial microgrid is considered and when it is isolated from the utility grid, the PVG's must operate in the voltage-frequency control mode in the absence of a storage or a diesel generator unit. It is observed that the conventional P-f and Q-v droop control method fails to deliver correct power references for inverters operating in parallel when network impedance is unequal, and therefore an active power-reactive power-frequency-derivative (PQFD) droop control is proposed to achieve an error free power sharing. Seamless operation from the grid connected mode to isolated mode and vice-versa is achieved with the help of the aforementioned control, which in addition assists in the alleviation of sluggish response in the presence of Induction motor (IM) loads by providing appropriate damping. For a transient free transfer from isolated mode to grid connected mode, a synchronisation control is formulated which helps in the proper reconnection. The controller designed is tested in both Microgrid and the grid connected mode and during transition. The controller gains used in the paper have been obtained with the help of a small signal analysis of the system considered. |
| Starting Page | 973 |
| Ending Page | 987 |
| Page Count | 15 |
| ISSN | 17521416 |
| Volume Number | 10 |
| e-ISSN | 17521424 |
| Issue Number | Issue 7, Aug (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/10/7 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2015.0518 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2016-08-01 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Control of Electric Power System Diesel Generator Unit Distributed Power Generation Frequency Control Grid-connected Microgrid Induction Motor Load Maximum Power Point Trackers MPPT Mode Network Impedance Photovoltaic Generation Photovoltaic Power System Power Reference Power Sharing Approach Power Transfer PQFD Droop Control PVG Radial Network Small Signal Analysis Solar Power Stations Synchronisation Synchronisation Procedure Voltage Control Voltage–frequency Control |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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