Wind turbine shadow flicker protection system having a driving mechanism allowing a single light sensor to receive light at different times and directions
AssigneeGeneral Electric Company
InventorsRong Li, Shijiang Liu, Chenggang Huang, Weiguo Zhang, Qi Zhang, Stefan Rieken
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Abstract
A light intensity detection system for a wind turbine including a single light sensor adapted to measure the intensity of light, a housing for protecting the single light sensor from environmental influences, and a driving mechanism configured to allow the single light sensor to receive light from a first direction at a first time and from a second direction at a second time.
Claims20
A light intensity detection system for a wind turbine, comprising:
- a) a single light sensor adapted to measure the intensity of light;
- b) a housing for protecting the single light sensor from environmental influences;
- and,
- c) a driving mechanism configured to allow the single light sensor to receive light from a first direction at a first time and from a second direction at a second time.
A wind turbine, comprising:
- a) a nacelle supported by a tower;
- b) at least one rotor blade to capture wind energy;
- c) a light intensity detection system including a single light sensor adapted to measure the intensity of light;
- a housing for protecting the single light sensor from environmental influences;
- and a driving mechanism configured to allow the single light sensor to receive light from a first direction at a first time and from a second direction at a second time, respectively;
- and
- d) a control system for operating the wind turbine, wherein the control system is operatively connected with the light intensity detection system.
A method for operation of a wind turbine, the wind turbine comprises a light intensity detection system including a single light sensor, said method comprising:
- a) measuring with the single light sensor a first intensity of light from a first direction at a first time;
- b) measuring with the single light sensor a second intensity of light from a second direction at a second time;
- and
- c) changing the operational state of the wind turbine based on the obtained measurements when a predetermined light intensity condition is exceeded.
Dependencies are inferred from the claim text.