title: An improved low-voltage ride-through performance of DFIG based wind plant using stator dynamic composite fault current limiter.
abstract: In this paper, an enhanced low-voltage ride-through (LVRT) performance of a grid connected doubly fed induction generator (DFIG) has been presented with the usage of stator dynamic composite fault current limiter (SDCFCL). This protection circuit comprises of a suitable series resistor-inductor combination and parallel bidirectional semiconductor switch. The SDCFCL facilitates double benefits such as reduction of rotor induced open circuit voltage due to increased value of stator total inductance and concurrent increase of rotor impedance. Both effects will limit rotor circuit over current and over voltage situation more secured way in comparison to the conventional scheme like the dynamic rotor current limiter (RCL) during any type of fault situation. The proposed concept is validated through the simulation study of the grid integrated 2.0MW DFIG.
authors.affiliation: Electrical Engineering Department, Kalyani Government Engineering College, Kalyani, Nadia 741235, India. Electronic address: pkgtar@gmail.com.
authors.forename: P K
authors.initials: PK
authors.lastname: Gayen
authors.affiliation: Electrical Engineering Department, Jadavpur University, Kolkata 700032, India. Electronic address: debashisju@yahoo.com.
authors.forename: D
authors.initials: D
authors.lastname: Chatterjee
authors.affiliation: Electrical Engineering Department, Jadavpur University, Kolkata 700032, India. Electronic address: skgoswami_ju@yahoo.co.in.
authors.forename: S K
authors.initials: SK
authors.lastname: Goswami
keywords: Doubly fed induction generator; Low-voltage ride-through; Rotor side converter; Stator dynamic composite fault current limiter