TY - JOUR
T1 - Decentralized control for parallel operation of distributed generation inverters using resistive output impedance
AU - Guerrero, Josep M.
AU - Matas, José
AU - de Vicuna, Luis Garcia
AU - Castilla, Miguel
AU - Miret, Jaume
PY - 2007/4/1
Y1 - 2007/4/1
N2 - In this paper, a novel wireless load-sharing controller for islanding parallel inverters in an ac-distributed system is proposed. This paper explores the resistive output impedance of the parallel-connected inverters in an island microgrid. The control loops are devised and analyzed, taking into account the special nature of a low-voltage microgrid, in which the line impedance is mainly resistive and the distance between the inverters makes the control intercommunication between them difficult. In contrast with the conventional droop-control method, the proposed controller uses resistive output impedance, and as a result, a different control law is obtained. The controller is implemented by using a digital signal processor board, which only uses local measurements of the unit, thus increasing the modularity, reliability, and flexibility of the distributed system. Experimental results are provided from two 6-kVA inverters connected in parallel, showing the features of the proposed wireless control.
AB - In this paper, a novel wireless load-sharing controller for islanding parallel inverters in an ac-distributed system is proposed. This paper explores the resistive output impedance of the parallel-connected inverters in an island microgrid. The control loops are devised and analyzed, taking into account the special nature of a low-voltage microgrid, in which the line impedance is mainly resistive and the distance between the inverters makes the control intercommunication between them difficult. In contrast with the conventional droop-control method, the proposed controller uses resistive output impedance, and as a result, a different control law is obtained. The controller is implemented by using a digital signal processor board, which only uses local measurements of the unit, thus increasing the modularity, reliability, and flexibility of the distributed system. Experimental results are provided from two 6-kVA inverters connected in parallel, showing the features of the proposed wireless control.
KW - Distributed generation (DG)
KW - Droop method
KW - Inverters
KW - Microgrids
UR - http://www.scopus.com/inward/record.url?scp=34247108253&partnerID=8YFLogxK
U2 - 10.1109/TIE.2007.892621
DO - 10.1109/TIE.2007.892621
M3 - Journal article
AN - SCOPUS:34247108253
SN - 0278-0046
VL - 54
SP - 994
EP - 1004
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
IS - 2
ER -