TY - GEN
T1 - A novel unbalanced power sharing control method for an islanded microgrid
AU - Liu, Baojin
AU - Liu, Zeng
AU - Liu, Jinjun
AU - Wu, Teng
AU - An, Ronghui
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/25
Y1 - 2017/7/25
N2 - This paper proposes a novel control method to realize unbalanced load power sharing in an islanded microgrid. The proposed method consists of typical real-power-frequency (P-f) and reactive-power-voltage (Q-V) droop control, virtual impedance control which only functions at fundamental negative sequence, and unbalanced-power-small-signal-frequency (SU-ωss) droop control. The typical droop control can ensure the sharing of real and reactive power, however, is incapable of sharing the unbalanced power. So, the negative sequence virtual impedance is introduced to regulate the distribution of unbalanced power. The proposed SU-ωss droop relationship, which is based on the injection of an independent small ac signal, is added to completely compensate the unbalanced power sharing error. This novel method doesn't employ any communication links among the distributed generation (DG) units, and it doesn't need the information of feeder impedance. Simulation and experimental results are provided to validate the proposed method.
AB - This paper proposes a novel control method to realize unbalanced load power sharing in an islanded microgrid. The proposed method consists of typical real-power-frequency (P-f) and reactive-power-voltage (Q-V) droop control, virtual impedance control which only functions at fundamental negative sequence, and unbalanced-power-small-signal-frequency (SU-ωss) droop control. The typical droop control can ensure the sharing of real and reactive power, however, is incapable of sharing the unbalanced power. So, the negative sequence virtual impedance is introduced to regulate the distribution of unbalanced power. The proposed SU-ωss droop relationship, which is based on the injection of an independent small ac signal, is added to completely compensate the unbalanced power sharing error. This novel method doesn't employ any communication links among the distributed generation (DG) units, and it doesn't need the information of feeder impedance. Simulation and experimental results are provided to validate the proposed method.
KW - islanded
KW - microgrid
KW - power sharing
KW - unbalanced load
UR - https://www.scopus.com/pages/publications/85034116026
U2 - 10.1109/IFEEC.2017.7992289
DO - 10.1109/IFEEC.2017.7992289
M3 - 会议稿件
AN - SCOPUS:85034116026
T3 - 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
SP - 1617
EP - 1622
BT - 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017
Y2 - 3 June 2017 through 7 June 2017
ER -