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This paper presents a wind turbine concept based on a dual-stator-single-rotor (or sandwich-typed) PMSG and a novel converter. First, the structure of the sandwich-typed PMSG is explained. Then, according to the principle of the PMSG, a novel converter topology is proposed. Finally, a detailed direct drive wind turbine model based on the converter and the PMSG is built in the Matlab/Simulink. Thorough...
Nowadays the variable speed constant frequency wind turbines with doubly-fed induction generators (DFIG) have been widely used in the wind power generation system. Vector control is introduced to the DFIG control strategies, which decouples DFIG active and reactive powers, and achieves good performances in the wind power system. However, decoupling is still present, when the flux varies. Moreover,...
In wind power system, the fault ride-through capability of doubly fed induction generators (DFIG) has become the focus of study. The analysis and calculation of fault currents are of important directive significance for implementing DFIG fault ride-through. This paper analyzes dynamic responses of DFIG stator and rotor currents when three phase short circuit occurs at stator terminal, and also proposes...
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