TY - GEN
T1 - Decentralized Solution Based on Small-AC-Signal Injection for Accurate Power Sharing in Islanded Microgrids with Complex Line Impedances
AU - An, Ronghui
AU - Liu, Zeng
AU - Liu, Jinjun
AU - Liu, Baojin
N1 - Publisher Copyright:
© 2020 IEEE.
PY - 2020/3
Y1 - 2020/3
N2 - To address the power sharing accuracy problem caused by mismatched line impedances in a real distributed microgrid with dispersed sources and loads, a decentralized solution based on the injection of an extra small AC signal into the output voltage of each inverter is proposed in this paper. Without the aid of communication links, appropriate virtual impedances could be obtained to compensate the mismatched line impedances in full frequency range, and hence the active, reactive, unbalanced and harmonic powers could be shared accurately among parallel inverters under various load conditions. Moreover, the proposed method also considers the impact of complex line impedances, and this makes it a promising strategy in practical microgrid applications. Finally, a comprehensive case is provided to validate its effectiveness.
AB - To address the power sharing accuracy problem caused by mismatched line impedances in a real distributed microgrid with dispersed sources and loads, a decentralized solution based on the injection of an extra small AC signal into the output voltage of each inverter is proposed in this paper. Without the aid of communication links, appropriate virtual impedances could be obtained to compensate the mismatched line impedances in full frequency range, and hence the active, reactive, unbalanced and harmonic powers could be shared accurately among parallel inverters under various load conditions. Moreover, the proposed method also considers the impact of complex line impedances, and this makes it a promising strategy in practical microgrid applications. Finally, a comprehensive case is provided to validate its effectiveness.
KW - complex line impedance
KW - decentralized control
KW - microgrid
KW - power sharing
KW - small-signal injection
UR - https://www.scopus.com/pages/publications/85087791627
U2 - 10.1109/APEC39645.2020.9124479
DO - 10.1109/APEC39645.2020.9124479
M3 - 会议稿件
AN - SCOPUS:85087791627
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 3437
EP - 3443
BT - APEC 2020 - 35th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
Y2 - 15 March 2020 through 19 March 2020
ER -