Floating Wind Turbine Control System for Lateral Wind Alignment
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Solution Overview
Problem
Existing control methods for floating wind turbine generators do not effectively address wind direction deviations relative to the rotation axis of wind turbine blades, especially when wind flows from a laterally biased direction, resulting in inefficiencies in converting wind power to electrical energy.
Innovation Solution
A control system that combines a yaw driving device and pitch angle control section, using sensors to detect wind direction deviations and yaw angles to adjust the pitch and yaw of wind turbine blades, ensuring alignment with wind direction and optimizing energy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only yaw control is used to align the rotation plane with wind direction, then the structural complexity is low, but the wind direction deviation cannot be sufficiently reduced when wind flows from laterally biased directions
Solution Approach 1:
The patent combines pitch angle control with yaw control to form an integrated control system. The pitch angle control section adjusts the pitch angles of wind turbine blades while the yaw driving device adjusts the yaw angle, and both work together to reduce wind direction deviation more effectively than either control alone.
Solution Approach 2:
The patent introduces dynamic pitch angle adjustment capability that allows the wind turbine blades to adapt their pitch angles in real-time based on wind direction deviations. This dynamic control enables the system to respond to laterally biased wind directions by adjusting blade pitch angles independently of yaw angle limitations.
2Productivity
If pitch angle control is added to improve wind direction alignment, then the wind power conversion efficiency improves, but the device complexity increases
Solution Approach 1:
The patent merges pitch angle control functionality with the existing yaw control system. The control system integrates both pitch angle control sections and yaw driving devices, allowing them to work synergistically to maximize wind power conversion efficiency while managing overall system complexity through unified control architecture.
Solution Approach 2:
The pitch angle control section serves multiple functions: it adjusts blade pitch angles for optimal wind capture, compensates for laterally biased wind directions, and works in coordination with yaw control. This multi-functionality improves productivity while avoiding the need for completely separate control systems.
3Adaptability or versatility
If the nacelle and tower are designed to be movable relative to each other for yaw control, then the adaptability to wind direction improves, but the stability of the structure decreases
Solution Approach 1:
The patent implements dynamic adjustability through the yaw driving device that enables the nacelle to rotate relative to the tower for yaw control. This dynamic capability allows the system to adapt to different wind directions while maintaining structural integrity through controlled movement within designed mechanical limits.
Solution Approach 2:
The patent changes the yaw angle parameter through the yaw driving device to adjust the orientation of the rotation plane relative to wind direction. By controlling the yaw angle as a variable parameter, the system achieves adaptability to different wind conditions while maintaining structural stability through controlled parameter adjustment within safe operational ranges.
Data Source
AI summary
The control system of this floating wind turbine generator is a control system of a floating wind turbine generator in which the control system controls a pitch angle control section by a pitch angle instruction value calculated on the basis of signals detected by a second sensor detecting a relative angle between a nacelle and a tower and a third sensor detecting a yaw angle from a reference position of the tower so that a signal detected by a first sensor detecting wind direction deviation relative to a vertical direction of a rotation plane of wind turbine blades indicates an angle within a predetermined range from the vertical direction of the rotation plane of the wind turbine blades, and controls a yaw driving device by a yaw driving instruction value calculated on the basis of the signals detected by the second sensor and the third sensor.