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With the increasing wind power penetration, the wind farms are directly influencing the power systems. The majority of wind farms are using variable speed wind turbines equipped with doubly-fed induction generators (DFIG) due to their advantages over other wind turbine generators. Therefore, the analysis of wind power dynamics with the DFIG wind turbines has become a very important research issue,...
This paper presents a novel brushless doubly fed generator for wind power generation. In contrast to conventional brushless doubly fed machine, the novel machine has a simple winding structure together with two stators and rotating modulation steels in the airgap. With the machine being intrinsically designed for gearless low speed operation, it could be an attractive direct drive system for small...
An axial flux permanent magnet (AFPM) machine with dual rotors and single air-cored stator is studied in this paper. The machine is applied for vertical-shaft small power off-grid wind generating system. A 2-dimensional (2D) finite element analysis (FEA) method is proposed to approximately solve to the 3-dimensional (3D) magnetic field inside the AFPM machine. And a 2D analytical method is also presented...
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