Importance

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Abstract

Wind turbine systems and methods for operating wind turbine systems are provided. A method includes monitoring an operating condition of the wind turbine system, and determining whether the operating condition has exceeded a predetermined threshold. The method further includes switching a plurality of switches devices in a rotor side converter of a power converter of the wind turbine system in a normal switching mode if the operating condition is less than the predetermined threshold. The method further includes switching the plurality of switching devices in a short circuit switching mode if the operating condition is greater than or equal to the predetermined threshold. The method further includes switching the plurality of switching devices in the normal switching mode after switching in the short circuit mode if the operating condition decreases below the predetermined threshold and a secondary operating condition is below a secondary predetermined threshold.

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First Claim