TY - GEN
T1 - Large-Signal Stabilization of the Energy Storage System Interface Converter in DC Microgrid
AU - Fan, Enquan
AU - Jiang, Wentao
AU - Zhou, Yang
AU - Ma, Rui
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - The LLC resonant converter (LLC)possesses the features of high efficiency, high power density and galvanic isolation, which makes it a promising candidate for the energy storage converter in DC microgrid applications. In DC microgrid, power electronic loads are widely used, such as motor drivers. The negative impedance characteristics of these constant power loads (CPL) will affect the stability of the source converter. In this paper, a control method is proposed for the LLC resonant converter in the energy storage system. By adopting the nonlinear disturbance observer (NDO), the negative impedances caused by the power electronics loads are compensated. In addition, a reduced-order model for the LLC resonant converter is used to simplify the controller design. A Lyapunov based stability analysis is carried out, and the simulation results of using Matlab/Simulink are given to show the advantages of the proposed control method.
AB - The LLC resonant converter (LLC)possesses the features of high efficiency, high power density and galvanic isolation, which makes it a promising candidate for the energy storage converter in DC microgrid applications. In DC microgrid, power electronic loads are widely used, such as motor drivers. The negative impedance characteristics of these constant power loads (CPL) will affect the stability of the source converter. In this paper, a control method is proposed for the LLC resonant converter in the energy storage system. By adopting the nonlinear disturbance observer (NDO), the negative impedances caused by the power electronics loads are compensated. In addition, a reduced-order model for the LLC resonant converter is used to simplify the controller design. A Lyapunov based stability analysis is carried out, and the simulation results of using Matlab/Simulink are given to show the advantages of the proposed control method.
KW - Constant power load
KW - DC microgrid
KW - Energy storage system
KW - Large-signal stability
KW - LLC resonant converter
KW - Sliding mode control
KW - Stability analysis
UR - https://www.scopus.com/pages/publications/85179500580
U2 - 10.1109/IECON51785.2023.10311825
DO - 10.1109/IECON51785.2023.10311825
M3 - 会议稿件
AN - SCOPUS:85179500580
T3 - IECON Proceedings (Industrial Electronics Conference)
BT - IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society
PB - IEEE Computer Society
T2 - 49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023
Y2 - 16 October 2023 through 19 October 2023
ER -