Wind Turbine Nacelle Yawing for Downwind Storm Protection

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Solution Overview

Problem

Conventional methods fail to effectively protect wind turbines from extreme weather conditions such as hurricanes and typhoons by reliably reducing damage to components and minimizing energy consumption.

Innovation Solution

A method and arrangement that involves rotating the nacelle of a wind turbine to a downwind orientation using a yawing actuator, reducing the load on the yawing system and minimizing energy consumption by yawing with the wind rather than against it, and utilizing power backup systems when disconnected from the utility grid.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the nacelle is oriented upwind during normal operation to maximize energy generation, then productivity is improved, but structural loading increases during extreme weather conditions

Engineering Contradiction:

Improveenergy generationVSAvoidstructural loading

Core Design Contradiction:

ProductivityVSStrength

Solution Approach 1:

The wind turbine system dynamically changes its operational state based on wind conditions. During normal operation, the nacelle is oriented upwind to maximize energy capture. When extreme weather conditions are detected (wind speeds exceeding threshold), the system automatically transitions to a survival mode where the nacelle is reoriented downwind, reducing structural loading while maintaining operational readiness.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the orientation parameter of the nacelle from upwind (during normal operation) to downwind (during extreme weather). This parameter change is triggered when wind speed exceeds a predetermined threshold, transforming the turbine from an energy-generating state to a protected state, thereby reducing structural loading during hurricanes or typhoons.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the nacelle is actively reoriented to downwind position during extreme weather using the yawing actuator, then reliability is improved, but energy consumption increases

Engineering Contradiction:

Improveprotection against damageVSAvoidenergy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary action by reorienting the nacelle to the downwind position before the extreme weather causes damage. When wind speeds exceed the threshold, the yawing actuator is activated to rotate the nacelle to a safe orientation, preparing the turbine for storm conditions in advance, thereby protecting components before they are exposed to damaging forces.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system converts the harmful effect of high wind loads into a beneficial protective mechanism. By allowing the wind to push the nacelle into a downwind orientation (where the rotor faces away from the wind), the same high winds that could cause damage are instead used to naturally reposition the turbine into a safer configuration, reducing the energy required for active reorientation and minimizing structural stress.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Device complexity

If conventional methods are used to handle extreme weather, then device complexity is reduced, but reliability of protection is insufficient

Engineering Contradiction:

Improvehandling system complexityVSAvoidprotection effectiveness

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system employs feedback control by continuously monitoring wind speed through sensors and comparing it against a predetermined threshold. When the wind speed exceeds the threshold, the control system automatically triggers the yawing actuator to reorient the nacelle to the downwind position. This closed-loop feedback mechanism ensures reliable protection during extreme weather while maintaining relatively simple device architecture.

Inventive Principle:

Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Reduces structural loading on the wind turbine during extreme weather conditions and minimizes energy consumption by positioning the nacelle downwind, thereby protecting components and maintaining operational efficiency.

Implementation Method 1

exerting, by the yawing actuator, a torque to the nacelle relative to the tower, thereby turning the nacelle to a second orientation being a downwind orientation

Methodology Applied

Scientific EffectTorque: Torque

Data Source

PatentUS12467432B2Handling a wind turbine in a severe weather condition

Publication Date: 2025.11.11 SIEMENS GAMESA RENEWABLE ENERGY AS

AI summary

A method of handling a wind turbine is provided including a nacelle coupled via a yawing system to a tower for protection against high wind load, the method including: supplying a control signal to a yawing actuator of the yawing system, while the nacelle is in a first orientation; exerting, by the yawing actuator, a torque to the nacelle relative to the tower, thereby turning the nacelle to a second orientation being a downwind orientation.