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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


On the Design of Suboptimal Controller for DC Microgrids with CPL
Constant power load, DC microgrids, State- SDRE control, subop timal control, voltage control
Researchers Zainab Karami ، Hassan Bevrani ، Yazdan Batmani ، Qobad Shafiee


In this paper, a suboptimal controller is proposed for a DC microgrid interfaced with constant power loads (CPLs). Towards this end, a nonlinear model of the DC microgrid is utilized to define an optimal tracking control problem based on a discounted quadratic infinite-horizon cost function. The problem is solved using a State-Dependent Riccati Equation (SDRE) technique. This feedback control technique can regulate the load voltage to its desired value while guaranteeing stability of the closed-loop system. The performance of the proposed SDRE tracking controller is valuated and compared with two other well-known nonlinear controllers, feedback linearization and backstepping, through some numerical simulations. The obtained results verify the effectiveness of the proposed SDRE controller.