Optimal Design of a 250 Kw Doubly Fed Induction Generator

Doubly Fed Induction Generator (DFIG) is one of the important generators that is used in the wind turbine structures. In the past few years, DFIG-based wind turbine systems that have been installed in the onshore and offshore wind farms are greater in number, than any other generator. Since the number of references that present the DFIG designing field are limited and equations and the design process are incompletely reviewed, in this paper the complete design process of a 250kW DFIG is presented. First, the optimal design equations of DFIGs are reviewed and then a model for the study of generator operation is presented. The detailed design of the DFIG is done next, and finally the Finite Element Analysis (FEA) is used to verify the design. The results show the effectiveness of the presented design process for the DFIG.