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DEFORMATION PROPERTIES OF SELF-ADAPTING WIND TURBINE BLADES NUMERICAL APPROACH AND OPTIMIZATION

ABSTRACT
All wind-driven generators need to be equipped with brakes to ensure operational control and safety. Many methods are available to avoid over-speed of the blower. This paper establishes a mechanics model to investigate each point on turbine blades, which are such designed that they would change shape in high winds to reduce the frontal area through adaptive and flexible deformation. In this way, high wind speeds will cause deformation of the blades and decrease of the rotational speed, as a result the turbine slows down. A numerical analysis of the fluid in the fan housing and a force analysis of the blades are performed, and numerical results are used to design the non-uniform arrangement of the hybrid glass/carbon fiber. A wind tunnel experiment is performed on the new blade design. The experimental results show that the new blade achieves an improvement in its mechanical properties and is able to adaptively adjust the torque. During the operation of the wind-driven generator, the new blade could effectively broaden the operational range of wind speeds, thereby improving the power generation when the wind speed is low. A generator without a brake stalls when the wind speed exceeds 13 m/s. After the adoption of the self-adaptive blade made up of the uniform-section complex textile material, the power set shows reduction of noise, avoidance of blade runaway, improvement of the efficiency of the power generation, decrease of cost and enhancement of blade consistency.
KEYWORDS
PAPER SUBMITTED: 2018-05-10
PAPER REVISED: 2018-06-19
PAPER ACCEPTED: 2018-06-23
PUBLISHED ONLINE: 2019-09-14
DOI REFERENCE: https://doi.org/10.2298/TSCI1904397C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Issue 4, PAGES [2397 - 2402]
REFERENCES
  1. Li, J. L., et al., Analyses of the Extensible Blade in Improving Wind Energy Production at Sites with Low-Class Wind Resource, Energies, 10 (2017), 9, pp. 1295
  2. Akour, S. N., et al., Experimental and Theoretical Investigation of Micro Wind Turbine for Low Wind Speed Regions, Renewable Energy, 116 (2017), 2, pp. 215-223
  3. Mishnaevsky, L., et al., Materials for Wind Turbine Blades: An Overview, Materials, 10 (2017), 11, E 1285
  4. Chen, X. D., et al., Innovative Self-Adaptive Composite Wind Turbine With Optimization Design, In-ternational Journal of Applied Mathematics and Statistics, 51 (2013), 22, pp. 386-394
  5. Qiu, L., et al., Macro Fluid Analysis of Laminated Fabric Permeability, Thermal Science, 20 (2016), 3, pp. 835-838
  6. Zhao, Y., et al., An Integrated Dynamic Analysis Method for Simulating Installation of Single Blades for Wind Turbines, Ocean Engineering, 152 (2018), 1, pp.72-88
  7. Li, Y., et al., Glass Fiber Separator Coated by Porous Carbon Nanofiber Derived from Immiscible PAN/PMMA for High-Performance Lithium-Sulfur Batteries, Journal of Membrane Science, 552 (2018), Apr., pp. 31-42
  8. Yu, D. N., et al. Snail-Based Nanofibers, Materials Letters, 220 (2018), June, pp. 5-7

© 2022 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence