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This paper presents two wind converter structures based on an axial flux PM synchronous generator directly coupled to the wind turbine. For the generator model, a 2-D analytical solution of the Maxwell's equations in the machine is used. A rectifier model is developed, taking into account the diodes commutation mode. The first topology which supplies a RL load is composed by a small wind turbine,...
The direct starting of induction motors may cause various problems such as high inrush currents, voltage dips and harmonics. There have been numerous methods proposed to mitigate these stresses that are imposed on the power grid. This paper considers a starting method based on external rotor resistance control scheme that is used with wound-rotor induction machines. The so-called rotor-chopper-controlled...
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