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Resynchronization of Distributed Generation based on the Universal Droop Controller for Seamless Transfer Between Operation Modes

Amin, Mohammad; Zhong, Qing-Chang
Journal article, Peer reviewed
Accepted version
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URI
http://hdl.handle.net/11250/2631208
Date
2019
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  • Institutt for elkraftteknikk [1596]
  • Publikasjoner fra CRIStin - NTNU [20946]
Original version
IEEE transactions on industrial electronics (1982. Print). 2019, .   10.1109/TIE.2019.2942556
Abstract
Distributed generation (DG) inverters can operate in the islanded mode and the grid-connected mode. When these DG inverters operate in the islanded mode, they often form a microgrid. The magnitude and phase of the main grid voltage deviate from the microgrid voltage. If the microgrid is connected to the main grid under such condition, it results in a high transient overcurrent which is harmful to the system. This paper presents a new, simple and effective resynchronization mechanism for the universal droop control (UDC) DG inverters to achieve a seamless transfer from the islanded mode to the grid-connected mode. Simulation and experimental results are provided to verify the effectiveness of the proposed method. The result shows that the high transient overcurrent can be avoided and a seamless connection/reconnection to the main grid can be achieved.
 
Resynchronization of Distributed Generation based on the Universal Droop Controller for Seamless Transfer Between Operation Modes
 
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Journal
IEEE transactions on industrial electronics (1982. Print)

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