Model-Based Design of Coordinated Grid-Forming Control for FESS-DFIG Systems Using Load-Current Feedforward and Sigmoid-Based Rotor-Energy Regulation
Grid-forming doubly fed induction generator (DFIG) systems integrated with flywheel energy storage systems (FESSs), hereafter referred to as FESS-DFIG systems, must be designed to provide rapid frequency support while maintaining DC-link voltage stiffness and respecting rotor-speed limits under finite kinetic-energy re...