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Robust decentralized voltage control of an islanded microgrid under unbalanced and nonlinear load conditions
, Article Proceedings of the IEEE International Conference on Industrial Technology, Cape Town, South Africa ; Feb , 2013 , Pages 1825-1830 ; 9781467345699 (ISBN) ; Hamzeh, M ; Paridari, K ; Karimi, H ; Bakhshai, A ; Sharif University of Technology
2013
Abstract
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 control approaches are used to design a controller to overcome the disturbances resulting from the unknown...