Grid Integration Model for Doubly-Fed Induction Generator Wind Power Systems

This paper introduces the grid integration model for doubly-fed induction generator (DFIG) wind power systems and analyzes its impact on voltage stability. In this model, the rotor of the DFIG is controlled by a current source connected to the grid. The implementation typically involves rotor-side converter control algorithms that regulate active and reactive power injection using techniques like vector control with proportional-integral (PI) controllers. Additionally, we examine key characteristics of DFIG systems, including their power output capabilities under high wind speeds and their dynamic response during grid fault conditions. The low-voltage ride-through (LVRT) capability can be programmed using fault detection algorithms and crowbar protection circuits that maintain grid synchronization. Through detailed analysis of these characteristics, we gain deeper insights into DFIG system performance and their practical applications in modern power systems.