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Proceedings 2017, 1(4), 577; doi:10.3390/proceedings1040577

Energy Harvesting for Sensors of Structural Integrity in Wind Power Stations

KEmikro, RWTH Aachen University, Aachen 52062, Germany
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
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Published: 8 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Abstract

The structural integrity of the rotors of wind power stations can be monitored by a variety of sensors. However, the power supply of the employed sensors should not be connected by cable because lightning strikes are provoked that way. Therefore, energy harvesting systems are an interesting alternative. Three concepts for electrical power generation by harvesting the energy from the movements inside of rotor blades of wind power stations are described and compared to each other. Inside of such rotor blades, large vibration amplitudes of up to 15 cm are available but only at a frequency of a few Hertz. The available space is on the order of 20 × 20 × 40 cm3. A beam equipped with piezos and repelling magnets turned out being the most promising solution.
Keywords: low-frequency; energy harvesting; wind power station low-frequency; energy harvesting; wind power station
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Behnke, C.; Schomburg, W.K. Energy Harvesting for Sensors of Structural Integrity in Wind Power Stations. Proceedings 2017, 1, 577.

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