Pitch drive system for a wind turbine
AssigneeGeneral Electric Company
InventorsPeter Rogall, Patrick Achenbach
Life of this patent
Estimating the term…
Abstract
A pitch drive system for a wind turbine is provided which comprises a regulation drive for regulating the pitch of a rotor blade of the wind turbine during normal operation, the regulation drive comprising at least one drive train, and an emergency drive for pitching the rotor blade in case of emergency, the emergency drive comprising at least one drive train, wherein the at least one drive train of the emergency drive is separate from the at least one drive train of the regulation drive.
Claims15
A pitch drive system for a wind turbine, comprising:
- a regulation drive for regulating the pitch of a rotor blade of the wind turbine during normal operation, the regulation drive comprising at least one drive train and first and second motorized actuators;
- an emergency drive for pitching the rotor blade in case of emergency, the emergency drive comprising at least one drive train and an actuator having a mechanical energy storage element;
- and
- wherein the at least one drive train of the emergency drive is separate from the at least one drive train of the regulation drive.
A pitch drive system for a wind turbine, comprising:
- a regulation drive for regulating the pitch of a rotor blade of the wind turbine during normal operation, the regulation drive comprising at least one drive train, wherein the regulation drive comprises:
- a pinion wheel for meshing with a toothed wheel;
- a gear box coupled to the pinion wheel;
- and
- at least two motors coupled to the gear box, wherein the at least to motors electric motors;
- an emergency drive for pitching the rotor blade in case of emergency, the emergency drive comprising at least one drive train and an actuator having a mechanical energy storage element;
- and
- wherein the at least one drive train of the emergency drive is separate from the at least one drive train of the regulation drive.
A wind turbine comprising:
- a rotor blade;
- and
- a pitch drive system comprising:
- a regulation drive for regulating the pitch of the rotor blade during normal operation the regulation drive comprising at least one drive train and first and second motorized actuators;
- an emergency drive for pitching the rotor blade in case of emergency, the emergency drive comprising at least one drive train and an actuator having a mechanical energy storage element;
- and
- wherein the at least one drive train of the emergency drive is separate from the at least one drive train of the regulation drive.
Dependencies are inferred from the claim text.