TY - GEN
T1 - An Improved Droop Control Based Smooth Transfer Control Strategy
AU - Meng, Xin
AU - Liu, Jinjun
AU - Liu, Zeng
AU - An, Ronghui
N1 - Publisher Copyright:
© 2018 IEEJ Industry Application Society.
PY - 2018/10/22
Y1 - 2018/10/22
N2 - This paper proposes a smooth transfer control method, which can transfer from the current-source control in the grid connected (GC) mode to droop control in the stand alone (SA) mode automatically. When the grid is normal, the DG unit is based on current-source control. Upon the occurrence of utility outage, the power and voltage control loop are automatically activated to regulate the load voltage. The advantages of this proposed strategy are as follows. Firstly, compared with droop control, the proposed control strategy can improve the grid current quality and output constant power when the grid voltage has oscillation in GC mode. Secondly, compared with the hybrid voltage and current control strategy, the quality of critical load voltage can be maintained during the transferring process, and the reliability of microgrid in SA mode can be improved. The simulation results are provided to verify the effectiveness of the proposed control method.
AB - This paper proposes a smooth transfer control method, which can transfer from the current-source control in the grid connected (GC) mode to droop control in the stand alone (SA) mode automatically. When the grid is normal, the DG unit is based on current-source control. Upon the occurrence of utility outage, the power and voltage control loop are automatically activated to regulate the load voltage. The advantages of this proposed strategy are as follows. Firstly, compared with droop control, the proposed control strategy can improve the grid current quality and output constant power when the grid voltage has oscillation in GC mode. Secondly, compared with the hybrid voltage and current control strategy, the quality of critical load voltage can be maintained during the transferring process, and the reliability of microgrid in SA mode can be improved. The simulation results are provided to verify the effectiveness of the proposed control method.
KW - grid connected mode
KW - improved droop control
KW - smooth transfer
KW - stand alone mode
UR - https://www.scopus.com/pages/publications/85057316617
U2 - 10.23919/IPEC.2018.8507854
DO - 10.23919/IPEC.2018.8507854
M3 - 会议稿件
AN - SCOPUS:85057316617
T3 - 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
SP - 957
EP - 962
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 -