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Hassan Bevrani

Hassan Bevrani

Academic rank: Professor
Education: PhD.
ScopusId: 55913436700
Faculty: Faculty of Engineering
Address: Dept. Of Electrical and Computer Eng, University of Kurdistan, Allameh Hamdi Blvd, Sanandaj PO Box 416, P. C: 66177-15175, Kurdistan, Iran
Phone: +98-87-33624001


Communication-less Optimal Frequency Control of Islanded Microgrids
Active power sharing, Autonomus Microgrids, Decentralized secondary control, Linear quadratic regulator
Researchers Frede Blaabjerg ، Tomislav Dragicevic ، Mohammad Fathi ، Qobad Shafiee ، Mobin Naderi ، Yusef Khayat ، Hassan Bevrani


This paper proposes a decentralized linear quadratic regulator (LQR) for secondary control layer of islanded microgrids. This approach regulates the system frequency while guaranteeing accurate active power sharing among all the sources. Unlike the existing works, a systematic approach is introduced to design a communication-less secondary controller based on an appropriate quadratic cost function via the optimal LQR technique. Its decentralized characteristics, simplicity in implementation, optimality, and straightforwardness of the design procedure are the major features of the presented approach. Design procedure is depended only to the cut-off frequency of the droop layer low-pass filter and renders an optimal performance. Simulation results validate the efficiency of the proposed approach.