Dosoglu, M. KenanOzkaraca, OsmanGuvenc, Ugur2021-12-012021-12-0120190948-79211432-0487https://doi.org/10.1007/s00202-019-00857-yhttps://hdl.handle.net/20.500.12684/10518Low-voltage ride-through is important for the operation stability of the system in balanced- and unbalanced-grid-fault-connected doubly fed induction generator-based wind turbines. In this study, a new LVRT capability approach was developed using positive-negative sequences and natural and forcing components in DFIG. Besides, supercapacitor modeling is enhanced depending on the voltage-capacity relation. Rotor electro-motor force is developed to improve low-voltage ride-through capability against not only symmetrical but also asymmetrical faults of DFIG. The performances of the DFIG with and without the novel active-passive compensator-supercapacitor were compared. Novel active-passive compensator-supercapacitor modeling in DFIG was carried out in MATLAB/SIMULINK environment. A comparison of the system behaviors was made between three-phase faults, two-phase faults and a phase-ground fault with and without a novel active-passive compensator-supercapacitor modeling. Parameters for the DFIG including terminal voltage, angular speed, electrical torque variations and d-q axis rotor-stator current variations, in addition to a 34.5 kV bus voltage, were investigated. It was found that the system became stable in a short time and oscillations were damped using novel active-passive compensator-supercapacitor modeling and rotor EMF.en10.1007/s00202-019-00857-yinfo:eu-repo/semantics/closedAccessLow-voltage ride-throughNovel active-passive compensator-supercapacitor modelingDFIG-based wind turbineFed Induction GeneratorGrid-Connected DfigFault-RideControl StrategySide ConverterSystemStatcomImplementationEnhancementImprovementArticle1014111911322-s2.0-85074495215WOS:000490229800002Q2Q4