Abstract
Due to the double fed induction generatorpsilas (DFIG) advantage of controlling active and reactive power independently and partly power converter, DFIG is becoming a popular type of wind power generation system. However, the converter is quite sensitive to grid disturbance because of its limited partial capacity compared with the generator rating. Nowadays the grid code in European demands that the wind power generator possesses the ability of low voltage ride through (LVRT), in order to prevent the more severe successive grid faults. A simple LVRT system is built in this article. Experiment results on a 22 kW platform prove that active crowbar circuit is able to reduce the transient current and the system realizes the LVRT ability.
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