TY - GEN
T1 - Comparison of Three Small-Signal Stability Analysis Methods for Grid-Following Inverter
AU - Huang, Liang
AU - Wu, Chao
AU - Zhou, Dao
AU - Blaabjerg, Frede
PY - 2021
Y1 - 2021
N2 - Conventional vector current control (VCC) based grid-following inverters suffer from stability issues under weak grid, which attracts a lot of attention in recent years. Small-signal linearized model is an effective tool to analyze the stability of such nonlinear systems. In this paper, three small-signal stability analysis methods are compared, which are the state-space method, impedance analysis method, and equivalent single-input single-output (SISO) stability analysis method. These three methods are based on the same primitive system but with different input-output relations. Through strict analysis, it is found that the three methods basically predict the same stability boundary. Finally, the advantages and disadvantages of three methods are summarized and compared.
AB - Conventional vector current control (VCC) based grid-following inverters suffer from stability issues under weak grid, which attracts a lot of attention in recent years. Small-signal linearized model is an effective tool to analyze the stability of such nonlinear systems. In this paper, three small-signal stability analysis methods are compared, which are the state-space method, impedance analysis method, and equivalent single-input single-output (SISO) stability analysis method. These three methods are based on the same primitive system but with different input-output relations. Through strict analysis, it is found that the three methods basically predict the same stability boundary. Finally, the advantages and disadvantages of three methods are summarized and compared.
KW - small-signal model
KW - stability analysis
KW - comparison
KW - vector current control
KW - grid following inverter
UR - http://www.scopus.com/inward/record.url?scp=85119501546&partnerID=8YFLogxK
U2 - 10.1109/OPTIM-ACEMP50812.2021.9590036
DO - 10.1109/OPTIM-ACEMP50812.2021.9590036
M3 - Article in proceeding
SN - 978-1-6654-4827-7
T3 - Optimization of Electrical and Electronic Equipment (OPTIM), Proceedings
SP - 34
EP - 41
BT - 2021 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2021 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)
T2 - 2021 International Aegean Conference on Electrical Machines and Power Electronics (ACEMP) & 2021 International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)
Y2 - 2 September 2021 through 3 September 2021
ER -