Stability Control for Wind in Weak Grids

4 Hz oscillations and 30 Hz oscillations have been observed in real-world wind farms with weak grid interconnections. Such stability issues limit wind power delivery. This paper proposes mechanism-based feedback control strategies suitable for vector control based voltage source converters employed in Type-3 and Type-4 wind to enhance the overall system stability. Using a simplified linear model, we first demonstrate that the root cause of weak...