An Enhanced Control Methodology for LVRT Improvement of DFIG under Fault Condition

In the modern power generation era, wind power is one of the emerging power sources but at the same time there are challenges regarding its smooth operation at grid level. Low voltage ride through (LVRT) is one of these challenges to be tackled, as it is the requirement of the revised grid code. The present paper proposes an enhanced control for crowbar circuit to tackle this problem of doubly fed induction generator (DFIG) based wind turbine. In the present paper, the behaviour of DFIG during a fault has been analyzed using ‘power wind DFIG model’ available in the MATLAB Simulink library. A 9 MW wind farm model composed of 6 DFIGs (1.5 MW each) has been considered and simulated for various faults.