Wind Turbine Yaw Control Dynamic Threshold Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wind turbines face inefficiencies due to yaw system activation in turbulent wind conditions, leading to excessive energy consumption and stress without significant yaw direction changes, as existing systems are not effectively optimized for dynamic wind changes.
Innovation Solution
A method for controlling yawing based on efficiency information derived from previous yaw activities, which considers the relationship between effective angular change and accumulated angular movement within a defined time interval, adjusting filter and threshold settings dynamically to optimize yaw activities and reduce unnecessary actuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the yaw system is repeatedly activated under turbulent wind conditions, then the yaw direction is adjusted frequently, but the energy consumption increases and the yaw system experiences excessive stress without significant benefit
Solution Approach 1:
The patent dynamically adjusts the threshold for yaw activation based on wind turbulence conditions. When turbulence is detected, the threshold is raised to prevent unnecessary yaw activations, thereby reducing energy consumption while maintaining effective yaw control during stable conditions
Solution Approach 2:
The system transitions from static threshold-based yaw control to dynamic threshold adjustment based on real-time wind condition assessment. The yaw control parameters are continuously adapted to match the current wind regime, optimizing the balance between yaw effectiveness and energy consumption
2Use of energy by moving object
If the yaw system is restricted to reduce energy consumption, then unnecessary activations are reduced, but necessary yawing may be prevented or delayed during significant wind direction changes
Solution Approach 1:
The system dynamically modifies the yaw activation threshold based on wind turbulence characteristics. During turbulent conditions, a higher threshold prevents spurious activations, while during stable conditions, the threshold lowers to ensure responsive yaw adjustment, thus maintaining productivity while reducing energy consumption
Solution Approach 2:
The system continuously monitors wind direction changes and turbulence levels, using this feedback to adjust yaw activation criteria in real-time. This feedback mechanism ensures that necessary yawing is not prevented or delayed, as the system adapts its sensitivity to match actual wind conditions
3Device complexity
If the yaw system acts discretely with predefined thresholds, then the control is simple, but the system cannot adapt to varying wind dynamics and turbulence conditions
Solution Approach 1:
The patent transforms the static, predefined threshold system into a dynamic system that adapts its parameters based on real-time wind condition assessment. The control logic remains relatively simple, but the thresholds themselves become variable, allowing the system to respond appropriately to different wind regimes without excessive complexity
Data Source
AI summary
A method for controlling yawing of a wind turbine,wherein an efficiency information is determined based on previous yaw activities,wherein the efficiency information reflects a relationship betweenan effective angular change between at least two yaw positions of the previous yaw activities, anda corresponding accumulated angular movement between the at least two yaw positions,wherein the yawing is controlled based on the determined efficiency information is provided.Further, a wind turbine and a device as well as a computer program product and a computer readable medium are suggested for performing the method is also provided.