TY - JOUR
T1 - Active Damping for Dynamic Improvement of Multiple Grid-Tied Virtual Synchronous Generators
AU - Yu, Yun
AU - Chaudhary, Sanjay K.
AU - Tinajero, Gibran David Agundis
AU - Xu, Luona
AU - Vasquez, Juan C.
AU - Guerrero, Josep M.
N1 - Publisher Copyright:
IEEE
PY - 2024/4/1
Y1 - 2024/4/1
N2 - To eliminate low-frequency oscillations, this article proposes an active-damping method for multiple grid-tied virtual synchronous generators (VSGs) in a power plant. First, using Lyapunov's indirect method, the damping ratio of multiple VSGs in parallel is analyzed. The average damping ratio reveals that this multi-VSG power plant can be poorly damped in a wide range of inertia and damping settings. Then, self- and mutual-damping controllers are developed to suppress self- and mutually induced low-frequency power oscillations, respectively. For practical implementation, an adaptive tuning algorithm that enables automatic realization is proposed. Through a reassessment, a remarkable damping-ratio improvement is validated. Moreover, the inertial response improvement is validated by the frequency response analysis. Finally, simulations in Digsilent/PowerFactory and experiments are performed to demonstrate the accuracy of the analyses and the effectiveness of the proposed method.
AB - To eliminate low-frequency oscillations, this article proposes an active-damping method for multiple grid-tied virtual synchronous generators (VSGs) in a power plant. First, using Lyapunov's indirect method, the damping ratio of multiple VSGs in parallel is analyzed. The average damping ratio reveals that this multi-VSG power plant can be poorly damped in a wide range of inertia and damping settings. Then, self- and mutual-damping controllers are developed to suppress self- and mutually induced low-frequency power oscillations, respectively. For practical implementation, an adaptive tuning algorithm that enables automatic realization is proposed. Through a reassessment, a remarkable damping-ratio improvement is validated. Moreover, the inertial response improvement is validated by the frequency response analysis. Finally, simulations in Digsilent/PowerFactory and experiments are performed to demonstrate the accuracy of the analyses and the effectiveness of the proposed method.
KW - active damping
KW - Damping
KW - Manuals
KW - Microgrids
KW - Oscillators
KW - Power generation
KW - Power oscillation
KW - small-signal stability
KW - Symbols
KW - Tuning
KW - virtual synchronous generator (VSG)
UR - http://www.scopus.com/inward/record.url?scp=85161006986&partnerID=8YFLogxK
U2 - 10.1109/TIE.2023.3277082
DO - 10.1109/TIE.2023.3277082
M3 - Journal article
AN - SCOPUS:85161006986
SN - 0278-0046
VL - 71
SP - 3673
EP - 3683
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 4
ER -