Systems and methods for monitoring a condition of a rotor blade for a wind turbine
First Claim
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1. A method for monitoring a condition of a rotor blade of a wind turbine, said method comprising:
- transmitting, from a plurality of sensors to a controller, at least one monitoring signal indicative of a vibration of the rotor blade, wherein the plurality of sensors includes a first sensor coupled to a support frame of the wind turbine for monitoring the vibration of the rotor blade;
calculating, by the controller, a range of operating vibration frequency values indicative of a normal operation of the rotor blade based at least in part on the monitoring signal;
calculating, the condition of the rotor blade based on the monitoring signal; and
,determining the calculated condition of the rotor blade to be less than a predefined condition when a sensed vibration frequency is different than the calculated range of operating vibration frequency values.
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Abstract
A method for monitoring a condition of a rotor blade of a wind turbine is provided. The method includes transmitting, from a sensor to a controller, at least one monitoring signal indicative of a vibration of the rotor blade. The condition of the rotor blade is calculated by the controller based on the monitoring signal.
40 Citations
20 Claims
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1. A method for monitoring a condition of a rotor blade of a wind turbine, said method comprising:
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transmitting, from a plurality of sensors to a controller, at least one monitoring signal indicative of a vibration of the rotor blade, wherein the plurality of sensors includes a first sensor coupled to a support frame of the wind turbine for monitoring the vibration of the rotor blade; calculating, by the controller, a range of operating vibration frequency values indicative of a normal operation of the rotor blade based at least in part on the monitoring signal; calculating, the condition of the rotor blade based on the monitoring signal; and
,determining the calculated condition of the rotor blade to be less than a predefined condition when a sensed vibration frequency is different than the calculated range of operating vibration frequency values. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A rotor blade condition monitoring system for use with a wind turbine, the wind turbine including at least one rotor blade, said rotor blade condition monitoring system comprising:
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a plurality of sensors configured to sense a vibration of the rotor blade and to transmit at least one monitoring signal indicative of the sensed vibration, said plurality of sensors comprising a first sensor coupled to a support frame of the wind turbine for monitoring the vibration of the rotor blade; and
,a controller communicatively coupled to said sensor for receiving the monitoring signal from said sensor, said controller configured to; calculate a range of operating vibration frequency values indicative of a normal operation of the rotor blade based at least in part on the monitoring signal; and
,determine a condition of the rotor blade to be less than a predefined condition when a sensed vibration frequency is different than the calculated range of operating vibration frequency values. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A wind turbine, comprising:
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a tower; a nacelle coupled to said tower; a generator positioned within said nacelle; a rotor; a rotor shaft rotatably coupling said rotor to said generator; at least one rotor blade coupled to said rotor; a pitch drive system coupled to said rotor blade; and
,a rotor blade condition monitoring system comprising; a plurality of sensors configured to sense a vibration of the rotor blade, said sensor further configured to transmit at least one monitoring signal indicative of the sensed vibration, said plurality of sensors comprising a first sensor coupled to a support frame of the wind turbine for monitoring the vibration of the rotor blade; and
,a controller communicatively coupled to said sensor for receiving the monitoring signal from said sensor, said controller configured to; calculate a range of operating vibration frequency values indicative of a normal operation of the rotor blade based at least in part on the monitoring signal; and
,determine a condition of the rotor blade to be less than a predefined condition when a sensed vibration frequency is different than the calculated range of operating vibration frequency values. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification