Numerical Modeling, Electrical Characteristics Analysis and Experimental Validation of Severe Inter-Turn Short Circuit Fault Conditions on Stator Winding in DFIG of Wind Turbines

Inter-turn short circuit fault (ITSCF) can be a great threat for the safety and effectiveness of generator. In this paper, simulation model with experimental platform is established to diagnose ITSCF in stator windings. A based on Finite Element Method (FEM) designed ANSYS. Stator current used calculating Root-Mean-Square (RMS) value, phase difference, symmetrical components, Park’s vector trajectory’s Total Harmonic Distortion (THD). It was found that when happened, three currents no longer symmetrical. The ratio negative positive sequence raises from 0.40 14.18 0.52 19.89 experiment normal condition 7 turns shorted. same trend seen trajectory analysis where eccentricity 0.03 0.65 0.14 0.75 experiment. Phase difference phases at 120° degree deviation as occurs winding. THD also increased increase level. results show good consistency results. performed research are major indications serious DFIG.