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Title: Improvement of frequency regulation in VSG-based AC microgrid via adaptive virtual inertia
Authors: Hou, Xiaochao
Sun, Yao
Zhang, Xin
Lu, Jinghang
Wang, Peng
Guerrero, Josep M.
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Hou, X., Sun, Y., Zhang, X., Lu, J., Wang, P. & Guerrero, J. M. (2019). Improvement of frequency regulation in VSG-based AC microgrid via adaptive virtual inertia. IEEE Transactions On Power Electronics, 35(2), 1589-1602.
Journal: IEEE Transactions on Power Electronics 
Abstract: A virtual synchronous generator (VSG) control based on adaptive virtual inertia is proposed to improve dynamic frequency regulation of microgrid. When the system frequency deviates from the nominal steady-state value, the adaptive inertia control can exhibit a large inertia to slow the dynamic process and, thus, improve frequency nadir. And when the system frequency starts to return, a small inertia is shaped to accelerate system dynamics with a quick transient process. As a result, this flexible inertia property combines the merits of large inertia and small inertia, which contributes to the improvement of dynamic frequency response. The stability of the proposed algorithm is proved by Lyapunov stability theory, and the guidelines on the key control parameters are provided. Finally, both hardware-in-the-loop and experimental results demonstrate the effectiveness of the proposed control algorithm.
ISSN: 0885-8993
DOI: 10.1109/TPEL.2019.2923734
Schools: School of Electrical and Electronic Engineering 
Rights: © 2019 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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