Wind Turbine Nacelle Yaw Correction for Sensor Misalignment
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Solution Overview
Problem
Existing wind turbines face inefficiencies due to misalignment of the nacelle with respect to the wind direction, primarily caused by misalignment of the primary wind sensor used for determining the yaw angle, which affects the optimal orientation of the rotor plane.
Innovation Solution
A method utilizing a secondary wind sensor to determine the misalignment of the primary wind sensor, enabling measures such as manual realignment or correction of the yaw angle setpoint to mitigate the nacelle's misalignment, supported by a computer-implemented process involving machine learning models and reference information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a primary wind sensor is used to determine the yaw angle of the nacelle, then the nacelle can be oriented towards the wind direction, but misalignment of the primary wind sensor causes static misalignment of the nacelle reducing operational efficiency
Solution Approach 1:
The system uses a secondary wind sensor to provide feedback information about the actual wind direction, which is then compared with the yaw angle determined by the primary wind sensor. This feedback loop enables detection and correction of misalignment, ensuring the nacelle maintains accurate orientation towards the wind direction for optimal operational efficiency
Solution Approach 2:
A secondary wind sensor is introduced as an intermediary element to verify and correct the measurements of the primary wind sensor. The secondary sensor acts as a mediator that provides reference information for detecting misalignment, allowing the system to compensate for sensor errors and maintain precise nacelle orientation
2Measurement precision
If manual realignment of the primary wind sensor is performed, then misalignment can be reduced, but this requires停机 and manual intervention increasing complexity and time loss
Solution Approach 1:
The system performs self-diagnosis and self-correction by using the secondary wind sensor to detect misalignment of the primary sensor. Instead of requiring manual intervention, the control system automatically identifies the misalignment and compensates for it by adjusting the yaw angle setpoint, enabling the system to maintain accuracy without human intervention or停机
Solution Approach 2:
Rather than physically realigning the primary wind sensor, the system changes the parameter of the yaw angle setpoint to compensate for the sensor misalignment. By adjusting this control parameter based on the detected misalignment, the system achieves accurate nacelle orientation without the complexity of physical sensor realignment
3Measurement precision
If the yaw angle setpoint is corrected based on misalignment detection, then nacelle alignment is improved, but this requires continuous monitoring and control operations
Solution Approach 1:
The control system continuously monitors the wind direction using both primary and secondary wind sensors, compares their readings, and automatically adjusts the yaw angle setpoint when misalignment is detected. This closed-loop feedback control ensures continuous accurate alignment without requiring complex manual control operations
Solution Approach 2:
The system performs automatic self-correction of the yaw angle setpoint based on misalignment detection from the secondary sensor. The control operations are automated, with the system independently monitoring, detecting, and correcting alignment issues without requiring external control intervention, simplifying the overall control process
Data Source
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AI summary
According to an embodiment, the method for mitigating a misalignment of a nacelle (4) of a wind turbine (100) comprises a step of receiving first information (11) which is representative of a first wind related quantity (TI_1). The first information has been determined with the help of a primary wind sensor (1). In a further step, second information (12) is received which is representative of a second wind related quantity (TI_2). The second information has been determined with the help of a secondary wind sensor (2). In a further step, third information (13) is determined depending on the first and the second information. The third information is representative of a misalignment (δ_m) of the primary wind sensor with respect to the nacelle. Then, if the primary wind sensor is misaligned, a measure is executed to cause a reduction of the misalignment of the nacelle resulting from the misalignment of the primary wind sensor.