Wind turbine power generating apparatus and method of operating the same
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsMitsuya Baba, Yoshiyuki Hayashi, Wakako Ariki
Life of this patent
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Abstract
A method of operating a wind turbine power generating apparatus including a wind turbine rotor having a wind turbine blade includes: a step of obtaining a load applied to the wind turbine blade; and a step of selecting an operation mode of the wind turbine power generating apparatus on the basis of the load, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode.
Claims12
A method of operating a wind turbine power generating apparatus including a wind turbine rotor having a wind turbine blade, the method comprising:
- a step of obtaining a load applied to the wind turbine blade;
- and
- a step of selecting an operation mode of the wind turbine power generating apparatus on the basis of the load, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode,
- wherein in the step of selecting the operation mode, one of the at least one load-suppressing mode is selected if the load is equal to or greater than a threshold, and
- wherein the threshold of the load is variable in accordance with at least one of a moment Md of the wind turbine rotor about a line in which a rotational plane and a horizontal plane of the wind turbine rotor intersect with each other, or a moment Mq of the wind turbine rotor about a yaw-rotational axis of the wind turbine power generating apparatus.
A method of operating a wind turbine power generating apparatus including a wind turbine rotor having a wind turbine blade, the method comprising:
- a step of obtaining a load applied to the wind turbine blade;
- a step of selecting an operation mode of the wind turbine power generating apparatus on the basis of the load, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode;
- and
- a step of obtaining, on the basis of the load, at least one of a moment Md of the wind turbine rotor about a line in which a rotational plane and a horizontal plane of the wind turbine rotor intersect with each other, or a moment Mq of the wind turbine rotor about a yaw-rotation axis of the wind turbine power generating apparatus,
- wherein, in the step of selecting the operation mode, the operation mode is selected on the basis of the at least one of the moment Md or the moment Mq in addition to the load.
A wind turbine power generating apparatus, comprising:
- a wind turbine rotor having a wind turbine blade;
- a load sensor for obtaining a load applied to the wind turbine blade;
- and
- an operation-mode selecting part configured to select an operation mode of the wind turbine power generating apparatus, on the basis of the load obtained by the load sensor, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode,
- wherein the operation-mode selecting part is configured to select one of the at least one load-suppressing mode if the load is equal to or greater than a threshold, and
- wherein the threshold of the load is variable in accordance with at least one of a moment Md of the wind turbine rotor about a line in which a rotational plane and a horizontal plane of the wind turbine rotor intersect with each other, or a moment Mq of the wind turbine rotor about a yaw-rotational axis of the wind turbine power generating apparatus.
A wind turbine power generating apparatus, comprising:
- a wind turbine rotor having a wind turbine blade;
- a load sensor configured to obtain a load applied to the wind turbine blade;
- an operation-mode selecting part configured to select an operation mode of the wind turbine power generating apparatus, on the basis of the load obtained by the load sensor, from among a plurality of operation modes including a normal operation mode and at least one load-suppressing operation mode in which the load applied to the wind turbine blade is smaller than in the normal operation mode;
- and
- a moment calculating part configured to obtain, on the basis of the load, at least one of a moment Md of the wind turbine rotor about a line in which a rotational plane and a horizontal plane of the wind turbine rotor intersect with each other, or a moment Mq of the wind turbine rotor about a yaw-rotation axis of the wind turbine power generating apparatus, and wherein the operation-mode selecting part is configured to select the operation mode on the basis of the at least one of the moment Md or the moment Mq obtained by the moment calculating part, in addition to the load.
Dependencies are inferred from the claim text.