System and method for power control in wind turbines
AssigneeGeneral Electric Company
InventorsJohn Douglas D'Atre, Anthony Michael Klodowski, Allen Michael Ritter, David Smith, Robert Gregory Wagoner, Luis Jose Garces, Henning Luetze
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Abstract
A system and method for power control in wind turbines are provided. The method includes switching a plurality of switching devices in a power conversion component of the wind turbine system in a normal switching mode to provide power flow through the power conversion component. The method further includes switching the plurality of switches devices in the power conversion component of the wind turbine system in a short circuit switching mode to prevent power flow through the power conversion component.
Claims20
A method for controlling power flow in a wind turbine system, said method comprising:
- switching a plurality of switching devices in a power conversion component of the wind turbine system in a normal switching mode to provide power flow through the power conversion component;
- and
- switching the plurality of switching devices in the power conversion component of the wind turbine system in a short circuit switching mode to prevent power flow through the power conversion component.
A method for protecting a wind turbine system from an excessive operating condition, said method comprising:
- monitoring at least one operating condition of the wind turbine system;
- determining whether the at least one operating condition has exceeded a first predetermined threshold;
- switching a plurality of switches in a rotor side converter of a power conversion unit in a normal switching mode if the first predetermined threshold has not been exceeded;
- and
- switching the plurality of switches in the rotor side converter of the power conversion unit in a short circuit switching mode if the first predetermined threshold has been exceeded.
A wind turbine system comprising:
- a rotor configured for rotation;
- a generator for generating power from the rotation of the rotor;
- a stator bus configured to provide a three-phase power output from a stator of the generator;
- a rotor bus configured to provide three-phase power from a rotor of the generator;
- a power conversion component connected to the rotor bus;
- and
- a control system configured to switch a plurality of switches devices in the power conversion component of the wind turbine system using a short circuit switching mode to prevent power flow through the power conversion component.
Dependencies are inferred from the claim text.