LVRT improvement of DFIG driven wind generator with rotor control

Abstract

The grid faults generally perturb the performance of wind turbine (WT) generator. Consequently, these issues offer the low voltage ride through (LVRT) as a solution for the grid associated wind generator under the fault conditions. This paper presents the enhancement of the LVRT capabilities of the DFIG based wind generator through the rotor side controller. The active and reactive power controls are used along with the proposed PID controller. Furthermore, the performance of the proposed PID controller is compared with the results of the PI controller. In addition, the drawbacks/failures of the PI controller are also highlighted. Finally, the simulation results with the PID controller exhibits the LVRT enhancement and stability of the DFIG system. © 2020 IEEE