TY - JOUR
T1 - A Consensus-Based Algorithm for Power Sharing and Voltage Regulation in DC Microgrids
AU - Fan, Bo
AU - Guo, Shilin
AU - Peng, Jiangkai
AU - Yang, Qinmin
AU - Liu, Wenxin
AU - Liu, Liming
N1 - Funding Information:
Manuscript received August 7, 2019; accepted August 30, 2019. Date of publication September 13, 2019; date of current version February 28, 2020. This work was supported in part by the National Natural Science Foundation of China under Grant 61673347, Grant U1609214, and Grant 61751205, in part by the Key R&D Program of Zhejiang Province (No. 2019C01050), and in part by the U.S. Office of Naval Research under Grant N00014-16-1-3121 and Grant N00014-18-1-2185. Paper no. TII-19-3655. (Corresponding author: Qinmin Yang.) B. Fan and Q. Yang are with the State Key Laboratory of Industrial Control Technology, College of Control Science and Engineering, Zhe-jiang University, Hangzhou 310027, China (e-mail:,kanade@zju.edu.cn; qmyang@zju.edu.cn).
Publisher Copyright:
© 2005-2012 IEEE.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6
Y1 - 2020/6
N2 - In dc microgrids, load power sharing and bus voltage regulation are two common control objectives. In this article, a consensus-based algorithm is presented to achieve proportional power sharing and regulation of weighted geometric mean of bus voltages in dc microgrids with ZIP (constant impedance, constant current, and constant power) loads simultaneously. By using the virtue of the Laplacian matrices of undirected connected graphs, a lemma is derived to assist the stability analysis of the dc microgrids. Thus, a sufficient condition that stabilizes the system with ZIP loads is established. In addition, with the help of a distributed voltage regulation error estimator, the tuning of the bus voltages can be realized without the requirement on initial voltage conditions. Through the Lyapunov synthesis, the large-signal stability of the closed-loop system is theoretically ensured for a wide range of load conditions. Finally, simulation studies are performed to validate the merits of the proposed consensus-based algorithm.
AB - In dc microgrids, load power sharing and bus voltage regulation are two common control objectives. In this article, a consensus-based algorithm is presented to achieve proportional power sharing and regulation of weighted geometric mean of bus voltages in dc microgrids with ZIP (constant impedance, constant current, and constant power) loads simultaneously. By using the virtue of the Laplacian matrices of undirected connected graphs, a lemma is derived to assist the stability analysis of the dc microgrids. Thus, a sufficient condition that stabilizes the system with ZIP loads is established. In addition, with the help of a distributed voltage regulation error estimator, the tuning of the bus voltages can be realized without the requirement on initial voltage conditions. Through the Lyapunov synthesis, the large-signal stability of the closed-loop system is theoretically ensured for a wide range of load conditions. Finally, simulation studies are performed to validate the merits of the proposed consensus-based algorithm.
KW - Consensus algorithm
KW - dc microgrid
KW - Laplacian matrix
KW - power sharing
KW - voltage regulation
UR - http://www.scopus.com/inward/record.url?scp=85077610162&partnerID=8YFLogxK
U2 - 10.1109/TII.2019.2941268
DO - 10.1109/TII.2019.2941268
M3 - Journal article
AN - SCOPUS:85077610162
SN - 1551-3203
VL - 16
SP - 3987
EP - 3996
JO - IEEE Transactions on Industrial Informatics
JF - IEEE Transactions on Industrial Informatics
IS - 6
M1 - 8836491
ER -