Abstract
This paper proposes a smooth transfer control strategy for distributed generation (DG) units between grid-connected (GC) mode and stand-alone (SA) mode. In the GC mode, the DG unit is controlled as a current source. When islanding happens, the DG unit can transfer from current source to voltage source automatically. In the SA mode, the DG unit is based on current droop control. The advantages of this proposed strategy are as follows. Firstly, compared with indirect current control, the reliability of microgrid system can be improved in the SA mode. Secondly, compared with the droop control method, the proposed control strategy can improve the grid current quality and output constant power when the grid voltage has oscillation in the GC mode, and can provide faster dynamic performance. The simulation results are provided to verify the effectiveness of the proposed method.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
