Robust control of hybrid distributed generation for frequency regulation

This paper presents the frequency regulation in the hybrid distributed generation system (HDGS). Being a critical problem it directly affects the reliability and quality of the HDGS. Therefore a roboust controller is designed for the frequency regulation of HDGS. The proposed hybrid system consists of conventional thermal source and distributed generation resources including wind turbine, fuel cell, aqua electrolyzer, diesel engine generator and super capacitor. H-infinity (H∞) controller for frequency regulation, is considered using linear matrix inequalities. The robustness of this controller is presented for the proposed hybrid power system with varying load and wind power conditions. The performance of the proposed controller is verified by performing simulations.

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