Abstract
Renewable energy in the power grid system is one of the most important topics in electricity generating now and into the future. The increasing penetration of this type of energy makes it very important for researchers to put the spot on. Tidal current energy is one of the most rapidly growing technologies for generating electric energy. Within that frame, tidal current energy is surging to the fore. The doubly fed induction generator (DFIG) is one of the most commonly used generators associated with tidal current and offshore wind turbines. The aim of the present work is to dedicate control strategies for the DFIG, enabling the turbines to act as an active component in the power system. This paper describes the overall dynamic models of tidal current turbine driving DFIG connected to a single machine infinite bus system and proposed two PI controllers used for improving the power system stability. DFIG is tested for small signal stability analysis. The overall system is verified. The system is tested using different values of controllers coefficients to determine the preferred ranges of values of the controllers coefficients for the system stability. The overall results are discussed and proved the importance of the proposed controllers.
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