ABSTRACT
The present chapter aims to study the performance of a grid-connected DFIG driven at fixed and variable speeds under the proposed predictive controller. To confirm the validation of the proposed control approach, the DFIG’s performance is evaluated using other control strategies as well. Each control technique is described by presenting its operating principle and how it is used to manage the operation of the DFIG. The main control strategies are SVOC, MPCC, MPDTC, and the formulated PVC technique. A comprehensive comparison is carried out among the performances of the controllers, through which the advantages and disadvantages of each method are outlined, and finally, the most effective approach is identified amongst them. The obtained results reveal that the proposed PVC approach possesses multiple advantages such as a faster dynamic response and simpler control structure when compared with SVOC and a faster dynamic response, reduced ripples, reduced computational burdens, and minimized THD when compared with the MPCC and MPDTC approaches. In addition, the robustness of the proposed PVC scheme is confirmed with the direct-driven operation by performing extensive performance evaluation tests considering the parameters’ variation.
