Robust decentralized voltage control of an islanded microgrid under unbalanced and nonlinear load conditions
2013 (English)Conference paper (Refereed)
This paper presents a new decentralized control strategy for the islanded operation of a microgrid under unknown load conditions. In the islanded mode of operation, the microgrid should provide the load with a set of regulated balanced three-phase voltages. The load which is parametrically and topologically uncertain can also be unbalanced and/or nonlinear. Thus, the use of conventional control strategies results in the poor performance and even instability of the microgrid system. The proposed method assumes that the load current is a measurable disturbance signal. The robust optimal controlapproaches are used to design a controller to overcome the disturbances resulting from the unknownloads dynamics. The optimization problem is converted to a convex problem and is solved using the linear matrix inequalities (LMIs). The performance of the designed controller is verified using time-domain simulations carried out in PSCAD/EMTDC software.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2013.
IdentifiersURN: urn:nbn:se:kth:diva-183159DOI: 10.1109/ICIT.2013.6505953ISI: 000322785200282ScopusID: 2-s2.0-84877622153OAI: oai:DiVA.org:kth-183159DiVA: diva2:908393
2013 IEEE International Conference on Industrial Technology (ICIT)
QC 201603032016-03-022016-03-022016-03-03Bibliographically approved