Development of low voltage ride-through control strategy for wind power generation using real time digital simulator

Abstract

With real time digital simulator (RTDS), new control strategy for low voltage ride through (LVRT) is developed for a doubly fed wind power induction generator (DFIG). Specifically, adaptive control method is proposed to limit high peak rotor current. Furthermore, current limiters are connected in three-phase rotor circuits, which are strategically controlled by thyristor switches to counter the effect of fault on DFIG operation. Simulation model is constructed in RTDS/RSCAD. Simulation results under various disturbances demonstrate the effectiveness of the new LVRT control strategies.