A Novel Power-Angle Control Method of DFIG-DC System Based on Regulating Air Gap Flux Vector

This article presents a novel power-angle control method of the doubly fed induction generator dc system based on regulating air gap flux vector. The relationship between angle electromotive force (EMF) vector and stator output power is revealed in this article, which can be used for controlling directly. Since frequency determined by rotating speed EMF vector, generated loop that avoid classical voltage model or current reduce parameter dependence. regulated through d-axis rotor since product constant. Furthermore, improved direct resonant torque ripple harmonic mitigation still applied because orientation achieved q-axis to zero. Finally, experimental results are presented validate proposed method.