Fault Ride-Through Capability Enhancement For Grid-Connected Permanent Magnet Synchronous Generator Driven by Wind Turbines

Wind energy penetration in new power systems increasing to avoid system blackouts misery and scheduled so wind turbine must have fault ride-through” FRT” capability. The most promising generator is permanent magnet synchronous generator” PMSG “which connected back-to-back converter and then to grid. Machine side converter” MSC” applied to maximize output power and grid side converter applied to stabilize the DC link voltage. Voltage oriented control is applied to” GSC “to decouple active and reactive power. Active crowbar is implemented for enhancing ” FRT” and is used to dissipate excessive energy during voltage dips. Active crowbar can overcome transients in wind energy by maintaining the connection to grid during grid faults. TSC device used to enhance” FRT” capability which inject reactive power to the system during grid faults A comparison is done between active crowbar and FACTS device. The studied system is grid-connected “PMSG “Driven by wind turbine. It is modeled and simulated by Simulink/MATLAB. The simulation results indicate the enhancement FRT capability in case of abnormal & normal conditions.