Resonance Monitoring of a Horizontal Wind Turbine by Strain-Based Automated Operational Modal Analysis

Wei-Hua Hu; De-Hui Tang; Ming Wang; Jun-Le Liu; Zuo-Hua Li; Wei Lu; Jun Teng; Samir Said; Rolf.  G. Rohrmann

doi:10.3390/en13030579

Energies (Jan 2020)

Resonance Monitoring of a Horizontal Wind Turbine by Strain-Based Automated Operational Modal Analysis

Wei-Hua Hu,
De-Hui Tang,
Ming Wang,
Jun-Le Liu,
Zuo-Hua Li,
Wei Lu,
Jun Teng,
Samir Said,
Rolf. G. Rohrmann

Affiliations

Wei-Hua Hu: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
De-Hui Tang: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Ming Wang: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Jun-Le Liu: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Zuo-Hua Li: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Wei Lu: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Jun Teng: School of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China
Samir Said: Federal Institute for Materials Research and Testing (BAM), 12205 Berlin, Germany
Rolf. G. Rohrmann: Struktur Analyse & Bauwerks Monitoring (SABM) GbR, 10965 Berlin, Germany

DOI: https://doi.org/10.3390/en13030579
Journal volume & issue: Vol. 13, no. 3
p. 579

Abstract

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A strain-based automated operational modal analysis algorithm is proposed to track the long-term dynamic behavior of a horizontal wind turbine under operational conditions. This algorithm is firstly validated by a scaled wind turbine model, and then it is applied to the dynamic strain responses recorded from a 5 MW wind turbine system. We observed variations in the fundamental frequency and 1f, 3f excitation frequencies due to the mass imbalance of the blades and aerodynamic excitation by the tower dam or tower wake. Inspection of the Campbell diagram revealed that the adverse resonance phenomenon and Sommerfeld effect causing excessive vibrations of the wind tower.

Published in Energies

ISSN: 1996-1073 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: http://www.mdpi.com/journal/energies

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