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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


Robust voltage controller design for an isolated Microgrid using Kharitonov’s theorem and D-stability concept
Distributed Generation (DG), Microgrid (MC), Islanding mode, Robust control, Kharitonov’s theorem D-stability
Journal International Journal of Electrical Power & Energy Systems
Researchers Hassan Bevrani ، Ali Hesami Naghshbandy ، Farshid Habibi


This paper proposes a new robust voltage control strategy for an isolated Microgrid (MG). The MG consists of several Distributed Generation (DG) units and local loads, which should be capable to operate in both connected and disconnected modes. To achieve this goal and suitable performance in both modes, robust control may provide many advantages. The proposed control structure proceeds to design a robust voltage controller based on Kharitonov’s theorem for an isolated MG system. It utilizes an internal oscillator to frequency control and a proportional–integral (PI) controller to maintain voltage stability that is tuned by Kharitonov’s theorem. For fine-tuning of the PI controller, D-stability concept as a complementary method is used. The PI voltage controller endeavors to minimize errors between direct and quadrature voltage components and their reference values. Performance of the robust voltage control method and isolated MG system are evaluated by several simulations in the presence of uncertainty in the system parameters.