An Integrated Dynamic Modeling and Adaptive Controller Approach for Flywheel Augmented DFIG Based Wind System

This paper presents an integrated Doubly Fed Induction Generator (DFIG) and flywheel energy storage architecture that provide output power stability based on a new dynamic adaptive control approach. First, a grid-connected two-mass DFIG and a grid-supportive single-mass squirrel cage induction generator based flywheel energy storage system models have been considered for controller design and proof of concept exploration. Second, new adaptive dynamic control architecture is designed for active and reactive power balancing from wind farm with flywheel energy storage during normal and abnormal operating conditions. The proposed architecture is very effective in mitigating oscillations, thus providing a novel methodology for a stable microgrid or increasing wind energy penetration to the grid.