An exemplary system for determining an operating condition for a wind turbine having a rotor, generator, and gearbox, includes a plurality of sensors mounted within the nacelle of the wind turbine. The system also includes a pair proximity sensors are mounted adjacent to the rotor for measuring rotor displacement. A first processor is connected to receive sensor data from the pair of proximity sensors and is configured to partition the received sensor data into predefined datasets, and a second processor configured to format the predefined datasets for transmission over a network to a processing computer.

An exemplary system for determining an operating condition for a wind turbine having a rotor, generator, and gearbox, includes a plurality of sensors mounted within the nacelle of the wind turbine. The system also includes a pair proximity sensors are mounted adjacent to the rotor for measuring rotor displacement. A first processor is connected to receive sensor data from the pair of proximity sensors and is configured to partition the received sensor data into predefined datasets, and a second processor configured to format the predefined datasets for transmission over a network to a processing computer.

A wind turbine has an object position and/or speed detection device including: at least one leaky feeder, at least one electromagnetic transmitter connected to the least one leaky feeder for transmitting a first electromagnetic signal along the at least one leaky feeder towards a target object, whose position is to be detected, at least one electromagnetic receiver connected to the least one leaky feeder for receiving from the at least one leaky feeder a second electromagnetic signal, the second electromagnetic signal reflected from the target object when the first electromagnetic signal hits the target object, a processing unit connected to the electromagnetic transmitter and the electromagnetic receiver and configured to analyze the first electromagnetic signal and the second electromagnetic signal for determining the position and/or speed and/or direction and/or the size of the target object.

A system and method are provided for determining deflection of a tower of a wind turbine, the wind turbine including a nacelle with a machine head and a rotor atop of the tower. A fixed location relative to the tower is established, and a total deflection of a geographic location (geo-location) of the fixed location is determined. Components of the total deflection are determined that are generated by non-thrust loads acting on the tower. The non-thrust loads deflection components are subtracted from the total deflection to determine a thrust loads deflection component corresponding to deflection of the tower from operational thrust loads on the rotor.

A system and method are configured to monitor changes associated with an air gap in a brake assembly of a wind turbine yaw drive by: (1) receiving one or more sensor signals from one or more sensors that are indicative of changes associated with the air gap; and (2) comparing the changes associated with the air gap to certain thresholds to determine if the air gap is in need of attention. The system includes at least one proximity sensor arranged adjacent to the air gap, to monitor the air gap, and a controller. The controller is configured to receive the sensor signal(s) indicative of the changes associated with the air gap. The controller also is configured to compare the changes associated with the air gap to one or more air gap thresholds, and to implement a control action based on this comparison.

Provided is a power generation system capable of reducing an outer diameter of a wheel with which an arm mechanism is brought into contact after a rotational speed of a rotation body increases to a first value by applying a large torque to the rotation body until the rotational speed of the rotation body increases to the first value. A power generation system 1 of the present invention is a power generation system in which a cam member 7 is rotated by hydroelectric power or wind power to bring a cam 6 into contact with an arm mechanism 3 and to rotate the arm mechanism 3, and the arm mechanism 3 comes into contact with either of wheels 42 and 41 of a rotation body 44 during the rotation of the arm mechanism 3 to rotate the rotation body 44. The power generation system 1 includes operation control means for transitioning to an operation in a second mode in which the arm mechanism 3 is brought into contact with a small-diameter wheel 41 in response to an increase in a rotational speed of the rotation body 44 to a first value during an operation in the first mode in which the arm mechanism 3 is brought into contact with the large-diameter wheel 42, and transitioning to the operation in the first mode in response to a decrease in the rotational speed of the rotation body 44 to a second value during the operation in the second mode.

The disclosure provides a floating wind turbine foundation, a floating wind turbine, an anti-typhoon method and a wind power generation method. The floating wind turbine foundation includes a tower foundation, multiple floats arranged around the tower foundation, and telescopic expansion mechanisms. Each of the floats corresponds to one of the telescopic expansion mechanisms, and each of the telescopic expansion mechanisms includes hydraulic jacks and a folding hinge. Two ends of each of the hydraulic jacks are respectively hinged with the tower foundation and corresponding one of the floats, and the folding hinge includes multiple mutually hinged folding arms, and two ends of the folding hinge are respectively hinged with the tower foundation and corresponding one of the floats.

It is described a method of performing deformation and/or orientation analysis of a wind turbine rotor blade, the method comprising: acquiring first position data of a first navigation system probe mounted at the blade to provide position at a first location; acquiring second position data of a second navigation system probe mounted at the blade to provide position at a second location; deriving first direction information at least regarding a relative direction of the first location and the second location based on the first position data and the second position data.

Provided is a power generation system capable of reducing an outer diameter of a wheel with which an arm mechanism is brought into contact after a rotational speed of a rotation body increases to a first value by applying a large torque to the rotation body until the rotational speed of the rotation body increases to the first value. A power generation system 1 of the present invention is a power generation system in which a cam member 7 is rotated by hydroelectric power or wind power to bring a cam 6 into contact with an arm mechanism 3 and to rotate the arm mechanism 3, and the arm mechanism 3 comes into contact with either of wheels 42 and 41 of a rotation body 44 during the rotation of the arm mechanism 3 to rotate the rotation body 44. The power generation system 1 includes operation control means for transitioning to an operation in a second mode in which the arm mechanism 3 is brought into contact with a small-diameter wheel 41 in response to an increase in a rotational speed of the rotation body 44 to a first value during an operation in the first mode in which the arm mechanism 3 is brought into contact with the large-diameter wheel 42, and transitioning to the operation in the first mode in response to a decrease in the rotational speed of the rotation body 44 to a second value during the operation in the second mode.

A method is for controlling a wind turbine. The wind turbine has a tower, a nacelle, a rotor with at least two rotor blades and a yaw system with at least one yaw drive configured to rotate the nacelle about a vertical axis of the tower (yaw axis). A control signal for the at least one yaw drive depends on at least one signal indicative of the wind direction. The control signal for the at least one yaw drive further depends on at least one value indicative of a vibration mode of the rotor blades.