@inproceedings{89b037811bf14cd3bf7e1f174b1f4dfa,
title = "Stability analysis and improvement of three-phase grid-connected power converters with virtual inertia control",
abstract = "The lack of inertia issue challenges the frequency control and stability of small-scale modern power systems. To alleviate adverse effects from inertia reduction, three-phase grid-connected power converters are increasingly being used to provide virtual inertia upon system demands. This can be achieved by directly linking the grid frequency and voltage references of DC-link capacitors/ultracapacitors. However, this paper reveals that the virtual inertia control may possibly induce instabilities to power converters under weak grid conditions, which is caused by the coupling between the d- and q-axis as well as the inherent differential operator introduced by the virtual inertia control. To tackle the instability issue, this paper proposes a modified virtual inertia control to mitigate the differential effect. Experimental verifications are provided, which demonstrate the effectiveness of the proposed control in stabilizing three-phase grid-connected power converters for inertia emulation even when connected to weak grids.",
keywords = "Frequency regulation, Power converter, Renewable energy, Stability, Virtual inertia, Weak grid",
author = "Jingyang Fang and Pengfeng Lin and Hongchang Li and Yi Tang and Yongheng Yang",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 ; Conference date: 17-03-2019 Through 21-03-2019",
year = "2019",
month = may,
day = "24",
doi = "10.1109/APEC.2019.8721845",
language = "英语",
series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "2400--2405",
booktitle = "34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019",
}
