Modeling and Analysis of Rotor Current of DFIG with Rotor Chopper Circuit Operative Condition During Three-Phase Symmetric Faults

with the continuous development of wind energy as an essential component of renewable energy, the modeling and analysis of rotor currents during three-phase symmetrical short-circuit faults in doubly-fed induction generator (DFIG) systems hold significant importance. However, the mathematical modeling and analysis of rotor currents during three-phase symmetrical faults in DFIG systems utilizing Chopper circuits remains an optimization area. In this paper, a novel rotor circuit modeling approach is proposed by analyzing the rotor circuit and considering the influence of Chopper circuit conduction. This method aims to enhance the alignment between the theoretical and simulated models of short-circuit currents in the rotor circuit.