Proposal and Simulation of a Doubly Fed Induction Generator for the Coastal Zone of Benin

This paper presents the sizing of a Doubly Fed Induction Generator (DFIG) with a power of 690.747 kW for the coastal area of Benin. The sizing of the proposed DFIG starts from the power density of the offshore wind potential of Benin obtained at 80 m at the sea surface to determine the power of the generator. Thanks to the geometrical, electrical and magnetic parameters obtained after sizing, the simulation of the generator operation was done using the finite element analysis (FEA). This simulation is done by running the generator at nominal speed in supersynchronous mode. The results of this simulation show that the powers obtained are close to the expected theoretical values. The curves of the powers and those of the flux densities in the air gap of the generator are presented. Electromagnetic model results are then used to develop the thermal model of the generator. The results of the thermal analysis obtained after simulation by the FEA allowed us to know the temperature values in each region of the DFIG.