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Energies 2018, 11(12), 3357; https://doi.org/10.3390/en11123357

Pitch Angle Misalignment Correction Based on Benchmarking and Laser Scanner Measurement in Wind Farms

1,†,* , 1,†
,
2,†
and
3,4,†
1
Maxwind, Portuetxe 83, 3, 20018 Donostia, Spain
2
Department of NE and Fluid Mechanics, University of the Basque Country (UPV/EHU), Otaola 29, 20600 Eibar, Spain
3
Department of NE and Fluid Mechanics, University of the Basque Country (UPV/EHU), Alda, Urkijo, 48013 Bilbao, Spain
4
Joint Research Unit (UPV/EHU-IEO) Plentziako Itsas Estazioa (PIE), University of Basque Country (UPV/EHU), Areatza Hiribidea 47, 48620 Plentzia, Spain
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 27 October 2018 / Revised: 14 November 2018 / Accepted: 23 November 2018 / Published: 1 December 2018
(This article belongs to the Special Issue Maintenance Management of Wind Turbines)
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Abstract

In addition to human error, manufacturing tolerances for blades and hubs cause pitch angle misalignment in wind turbines. As a consequence, a significant number of turbines used by existing wind farms experience power production loss and a reduced turbine lifetime. Existing techniques, such as photometric technology and laser-based methods, have been used in the wind industry for on-field pitch measurements. However, in some cases, regular techniques have difficulty achieving good and accurate measurements of pitch angle settings, resulting in pitch angle errors that require cost-effective correction on wind farms. Here, the authors present a novel patented method based on laser scanner measurements. The authors applied this new method and achieved successful improvements in the Annual Energy Production of various wind farms. This technique is a benchmarking-based approach for pitch angle calibration. Two case studies are introduced to demonstrate the effectiveness of the pitch angle calibration method to yield Annual Energy Production increase. View Full-Text
Keywords: wind turbine; laser technology; diagnosis; pitch angle misalignment; efficiency; durability wind turbine; laser technology; diagnosis; pitch angle misalignment; efficiency; durability
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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

Elosegui, U.; Egana, I.; Ulazia, A.; Ibarra-Berastegi, G. Pitch Angle Misalignment Correction Based on Benchmarking and Laser Scanner Measurement in Wind Farms. Energies 2018, 11, 3357.

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