This paper deals with the study of a grid tie small power dual rotor counter rotating wind system. The mechanical energy delivered by the two rotors with fixed-pitch blades is converted into electricity by two permanent magnet synchronous generators operating in parallel, each one being equipped with a maximum power point tracking system. The two machines are designed and analyzed by finite element method implemented into the software package Flux ® and the parameters of each machine are extracted and used in a Matlab/Simulink model that includes the turbines, the generators and all the power electronics blocks required for the grid tie energy conversion system.

Keywords: Dual rotor counter rotating wind system, Permanent magnet generators, Finite element, System analysis