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