Comparison Between Predictive Current and Predictive Torque Control Applied to a Doubly-Fed Induction Generator System for Connection to DC Microgrids

The growth of DC microgrids has led to studies of wind energy systems in order to take advantage of this configuration. Thereupon, this paper aims to perform analysis and comparisons between the predictive current control (PCC) and the predictive flux and torque control (PTC) applied to the system with doubly-fed induction generator connected to a DC microgrid (DFIG-DC). Simulation results are presented, showing steady-state responses for a 0.56-kW DFIG operating at unity power factor. Steady-state performance comparison between both methods is performed, showing that PCC provides lower current distortion than PTC, and PTC provides lower torque ripple and flux ripple than PCC.