Influence of PLL on synthetic inertia of DFIG wind turbine in droop controlled microgrids

Abstract

Islanded microgrids allow for a continuous supply of customers even when there is an outage in the bulk power system. The frequency control and stability in microgrids is an ongoing field of research. This work investigates the influence of synthetic inertia control of doubly-fed induction generator wind turbines on the dynamics of inverter dominated microgrids with droop control. A special focus is placed on the impact of the phase-locked loop dynamics.

Keywords

• asynchronous generators
• invertors
• distributed power generation
• power grids
• power distribution control
• phase locked loops
• power distribution faults
• frequency control
• power system stability
• power generation control
• wind turbines
• pll
• dfig wind turbine
• droop controlled microgrids
• islanded microgrids
• outage
• bulk power system
• frequency control
• synthetic inertia control
• doubly-fed induction generator wind turbines
• droop control