Renewable energy-based power systems, despite their numerous advantages, can lead to problems such as frequency fluctuations, voltage drops, and unstable power outputs. This paper suggests a control method for a doubly-fed induction generator (DFIG), equipped with battery energy storage system (BESS) to frequency, voltage control, and improve the fault tolerant ability. In the proposed strategy, the main purpose is to provide a method for decoupled control of voltage and frequency of the rotor before injected into the network as well as to improve network stability in the presence of stabilizers and BESS. The proposed control strategy is applied to BESS and the rotor side of the converter of DFIG. In this strategy, each loop controller used a conventional PI controller with additional stabilizers to damp out the oscillations of frequency and voltage. In such a way, under various disturbances condition, system in the presence of a BESS has a fast response with fewer range of oscillation. Finally, parameters of the controllers and stabilizers are adjusted simultaneously by an intelligent algorithm. All the results are obtained by simulation in real-time condition with Simulink of MATLAB 2016b.
