Advanced modeling of a doubly fed induction generator with open stator for soft grid synchronization

This paper presents a new, extended flux model of the doubly fed induction generator (DFIG). This extended flux model describes the operation at no-load with open stator connections, as well as the operation when connected to the grid. With this model, it is possible to simulate the soft synchronization of the DFIG to the grid. Also the synchronization process itself is modified using the new flux model. This paper presents simulations of the new flux model and the synchronization procedure. Measurements at a test bench complete the paper.