Developing a Novel Ice Protection System for Wind Turbine Blades Using Vibrations of Both Short and Long Wavelengths

Hossein Habibi, Graham Edwards, Liang Cheng, Haitao Zheng, Adam Marks, Vassilios Kappatos, Cem Selcuk, Tat Hean Gan

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Icing conditions in cold regions of the world may cause problems for wind turbine operations, since accreted ice can reduce the efficiency of power generation and create concerns regarding ice-shedding. This paper covers modelling studies and some experimental development for an ongoing ice protection system that provides both deicing and anti-icing actions for wind turbine blades. The modelling process contained two main sections. The first part involved simulation of vibrations with very short wavelength or ultrasonic guided waves (UGW) on the blade to determine optimal excitation frequency and transducer configuration. This excitation creates horizontal shear stress at the interface between ice and blade and focuses energy at the leading edge for de-bonding ice layers. The second modelling approach simulated the effects of vibrations with very long wavelength along with estimation of fatigue life due to harmonic forces to characterise the best parameters for shaker (s) mounted on blades. In parallel with this study, an empirical array of novel resonating shear transducers has been developed using a Design of Experiments (DoE) approach to demonstrate the practicability of inducing shear horizontal waves at the leading edge of wind turbine blades. This experimental verification also makes it possible to investigate the many parameters influencing ice-removal. In addition, piezo-electric and macro-fibre composite actuators have been investigated in place of conventional electro-magnetic shakers, in order to save weight and simplify integration of the deicing system components. The ongoing research is intended to provide an active solution for icing prevention and deicing, enabling safe and reliable operation of wind turbines in adverse weather conditions.

Original languageEnglish
Title of host publicationSAE Technical Papers
PublisherSAE International
Publication date15. Jun 2015
Article number2015-01-2081
DOIs
Publication statusPublished - 15. Jun 2015
Externally publishedYes
EventSAE International Conference on Icing of Aircraft, Engines, and Structures, ICE 2015 - Prague, Czech Republic
Duration: 22. Jun 201525. Jun 2015

Conference

ConferenceSAE International Conference on Icing of Aircraft, Engines, and Structures, ICE 2015
Country/TerritoryCzech Republic
CityPrague
Period22/06/201525/06/2015

Keywords

  • deicing, ultrasonic guided waves
  • fatigue
  • low frequency vibration
  • Wind turbine blades

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