A FUZZY-SMC-PI LOAD FREQUENCY CONTROL FOR MODERN POWER SYSTEMS WITH RENEWABLE ENERGY SOURCES
Abstract
In this paper, a Fuzzy Sliding Mode and PI (Fuzzy-SMC-PI) controller is presented for the Load Frequency Control (LFC) of hybrid power systems. The fuzzy controller acts as a supervisory controller for the sliding mode control and the conventional PI control. The proposed LFC overcomes the problems of overshoot and slow transient responses of the PI controller in the transient state and the chattering problem related to the robust sliding mode controller in the steady state. The controller is applied to a three-area hybrid power system made up of conventional thermal, solar thermal, and an Electric Vehicle (EV). The results showed lower noise, overshoot and a significant reduction of settling time when compared to existing approaches.
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