An Overview of DFIG Ride through Strategies under Grid Faults

摘要

this paper presents an overview of recent LVRT solutions for Doubly Fed Induction Generators (DFIG) based on hardware and software or a combination of both. The transient behavior of the system under three-phase grid fault is therefore simulated. Among the software solutions, the stator current feedback and demagnetizing current injection strategies are analyzed and simulated, and a coordinated crowbar, rotor side and grid side converter control is provided as the hardware software combination.