Abstract
Small-signal stability studies of ac microgrids have obtained abundant results, however, the large-signal stability is still a great challenge and this topic is little studied. In this article, the nonlinear reduced-order model of small-scale ac microgrids with single storage is established considering the structure changes of converters under large disturbances. Then, the large-signal stability is analyzed and the unstable mechanism is revealed. It is found that the structural changes caused by the limitation links have a great influence on the system stability. Based on the unstable mechanism, the virtual synchronous damping control is proposed to enhance the large-signal stability of ac microgrids. The effectiveness of the proposed analysis and control methods is validated through related case studies.
Sign-in/Register to access full text options 
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 callMore From: IEEE Journal of Emerging and Selected Topics in Power Electronics
Disclaimer: 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.
