TY - GEN
T1 - A Communication-independent Reactive Power Sharing Scheme with Adaptive Virtual Impedance for Parallel Connected Inverters
AU - An, Ronghui
AU - Liu, Zeng
AU - Liu, Jinjun
AU - Wang, Shike
N1 - Publisher Copyright:
© 2018 IEEJ Industry Application Society.
PY - 2018/10/22
Y1 - 2018/10/22
N2 - Droop control method has been widely applied to achieve equal power sharing among distributed generations in microgrids. However, the reactive power sharing performance is barely satisfactory for the absence of sharing accuracy under conditions of imbalanced line impedances. This paper proposed a communication-independent reactive power sharing scheme for parallel connected inverters. In this scheme, constant voltage control is applied to inverters, and the changing rate of virtual impedance is drooped with reactive power, hence accurate reactive power sharing could be achieved with no impact on voltage regulation performance. In addition, since the virtual impedance is adaptive to changing of reactive power, extra information from PCC voltage, line impedance or other communications is not needed in the implementation. The effectiveness of the proposed method is verified by simulations.
AB - Droop control method has been widely applied to achieve equal power sharing among distributed generations in microgrids. However, the reactive power sharing performance is barely satisfactory for the absence of sharing accuracy under conditions of imbalanced line impedances. This paper proposed a communication-independent reactive power sharing scheme for parallel connected inverters. In this scheme, constant voltage control is applied to inverters, and the changing rate of virtual impedance is drooped with reactive power, hence accurate reactive power sharing could be achieved with no impact on voltage regulation performance. In addition, since the virtual impedance is adaptive to changing of reactive power, extra information from PCC voltage, line impedance or other communications is not needed in the implementation. The effectiveness of the proposed method is verified by simulations.
KW - adaptive virtual impedance
KW - communication-independent
KW - droop control
KW - reactive power sharing
UR - https://www.scopus.com/pages/publications/85057336930
U2 - 10.23919/IPEC.2018.8507425
DO - 10.23919/IPEC.2018.8507425
M3 - 会议稿件
AN - SCOPUS:85057336930
T3 - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
SP - 3692
EP - 3697
BT - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Y2 - 20 May 2018 through 24 May 2018
ER -