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Data Acquisition Protocol for Determining Embedded Sensitivity Functions

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Published on: April 20, 2016

UWB Wind Turbine Blade Deflection Sensing for Wind Energy Cost Reduction.

Shuai Zhang¹, Tobias Lindstrøm Jensen², Ondrej Franek³

¹Antennas, Propagation and Radio Networking section at the Department of Electronic Systems, Faculty of Engineering and Science, Aalborg University, Aalborg 9100, Denmark. sz@es.aau.dk.

Sensors (Basel, Switzerland)

|August 15, 2015

Summary

Ultra-wideband (UWB) technology offers a novel method for sensing wind turbine blade deflections, potentially reducing wind energy costs. This system accurately estimates blade deflection and tip-root distance using UWB antennas, even in challenging environments.

Keywords:

UWB blade deflection radio link wind turbine

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Area of Science:

Electrical Engineering
Aerospace Engineering
Renewable Energy Systems

Background:

Wind turbine blade health monitoring is crucial for operational efficiency and cost reduction.
Existing methods for measuring blade deflection can be complex or invasive.
Ultra-wideband (UWB) technology presents a potential non-contact sensing solution.

Purpose of the Study:

To introduce and validate a novel UWB-based system for sensing wind turbine blade deflections.
To investigate the feasibility of using UWB antennas for real-time deflection monitoring.
To explore UWB's application in reducing wind energy costs through improved diagnostics.

Main Methods:

Implementation of a UWB blade deflection sensing system with antennas at the blade root and tip.
Conducting full-blade time-domain measurements under various deflection scenarios.
Focusing on the simplified case of an external tip antenna for initial validation.

Main Results:

Accurate estimation of blade tip-root distance and deflection was achieved.
The UWB radio link demonstrated sufficient signal quality for reliable measurements.
Successful operation was confirmed in complex and lossy wireless channels around the blade.

Conclusions:

The proposed UWB system is a viable technology for accurately sensing wind turbine blade deflections.
This application holds promise for enhancing wind energy cost-effectiveness through advanced monitoring.
Further research is recommended to optimize the system and explore advanced functionalities.