TY - JOUR
T1 - Fixed-order decentralized/distributed control of islanded inverter-interfaced microgrids
AU - Sadabadi, Mahdieh S.
AU - Karimi, Alireza
AU - Karimi, Houshang
N1 - Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/12/1
Y1 - 2015/12/1
N2 - This paper focuses on the problem of voltage control of islanded inverter-interfaced microgrids consisting of several distributed generation (DG) units with radial structure. The main objectives are to (i) design a decentralized/distributed voltage controller with minimum information exchange between DG units and their local controllers (ii) design a fixed-/low-order dynamic output feedback controller which ensures stability as well as desired performance of the microgrid system in spite of load parameter uncertainties. To this end, the problem is formulated as an optimization problem which is the minimization of the cardinality of a pattern matrix subject to an H∞ performance constraint. Since the problem is intrinsically non-convex, a convex optimization-based design procedure for the controller synthesis is proposed in this paper. The effectiveness of the proposed controller is evaluated through simulation studies and Hardware-In-the-Loop (HIL) verifications. The simulation and experimental results demonstrate the effectiveness of the proposed control strategy.
AB - This paper focuses on the problem of voltage control of islanded inverter-interfaced microgrids consisting of several distributed generation (DG) units with radial structure. The main objectives are to (i) design a decentralized/distributed voltage controller with minimum information exchange between DG units and their local controllers (ii) design a fixed-/low-order dynamic output feedback controller which ensures stability as well as desired performance of the microgrid system in spite of load parameter uncertainties. To this end, the problem is formulated as an optimization problem which is the minimization of the cardinality of a pattern matrix subject to an H∞ performance constraint. Since the problem is intrinsically non-convex, a convex optimization-based design procedure for the controller synthesis is proposed in this paper. The effectiveness of the proposed controller is evaluated through simulation studies and Hardware-In-the-Loop (HIL) verifications. The simulation and experimental results demonstrate the effectiveness of the proposed control strategy.
KW - Control structure design
KW - Distributed/decentralized control
KW - Fixed-order controller
KW - H control
KW - Islanded inverter-interfaced microgrids
KW - Linear Matrix Inequality (LMI)
UR - http://www.scopus.com/inward/record.url?scp=84943741037&partnerID=8YFLogxK
U2 - 10.1016/j.conengprac.2015.09.003
DO - 10.1016/j.conengprac.2015.09.003
M3 - Article
AN - SCOPUS:84943741037
SN - 0967-0661
VL - 45
SP - 174
EP - 193
JO - Control Engineering Practice
JF - Control Engineering Practice
ER -