TY - GEN
T1 - Impact of DC-Link Voltage Loop on Active Damper Stability
AU - Feng, Yuan
AU - Zhu, Rongwu
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - The active damper (AD) is considered to be an effective and feasible solution to address the oscillation issues in the modern power system caused by high penetration of power-electronics-interfaced resources. However, in current literature the impedance modeling of AD, which is widely used to study the stability of AD, neglects the impacts of the DC-link voltage loop, resulting in incomplete impedance model and reducing the accuracy of stability analysis. Hence, this paper proposes an improved impedance model of AD, which enhances the modeling accuracy by including the DC-link voltage loop. The dq-axis coupling impedance method is used in this paper to investigate the coupling effect of phase-locked loop (PLL) and its impacts on the stability of AD. The dq-axis impedance modeling results show that the DC-link voltage loop reshapes the output admittance and expands the active region of AD, which may lead to oscillation issues. The simulation and OPAL-RT-based test results validate the accuracy of the proposed modeling method.
AB - The active damper (AD) is considered to be an effective and feasible solution to address the oscillation issues in the modern power system caused by high penetration of power-electronics-interfaced resources. However, in current literature the impedance modeling of AD, which is widely used to study the stability of AD, neglects the impacts of the DC-link voltage loop, resulting in incomplete impedance model and reducing the accuracy of stability analysis. Hence, this paper proposes an improved impedance model of AD, which enhances the modeling accuracy by including the DC-link voltage loop. The dq-axis coupling impedance method is used in this paper to investigate the coupling effect of phase-locked loop (PLL) and its impacts on the stability of AD. The dq-axis impedance modeling results show that the DC-link voltage loop reshapes the output admittance and expands the active region of AD, which may lead to oscillation issues. The simulation and OPAL-RT-based test results validate the accuracy of the proposed modeling method.
KW - Active damper
KW - DC-link voltage loop
KW - impedance modeling
KW - interaction stability
UR - https://www.scopus.com/pages/publications/105011730753
U2 - 10.1109/PEDG62294.2025.11060169
DO - 10.1109/PEDG62294.2025.11060169
M3 - 会议稿件
AN - SCOPUS:105011730753
T3 - PEDG 2025 - 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems
SP - 1193
EP - 1198
BT - PEDG 2025 - 2025 IEEE 16th International Symposium on Power Electronics for Distributed Generation Systems
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th IEEE International Symposium on Power Electronics for Distributed Generation Systems, PEDG 2025
Y2 - 28 March 2025
ER -