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Energies 2017, 10(8), 1112;

The Concept of Segmented Wind Turbine Blades: A Review

Department of Materials, Textiles and Chemical Engineering, Ghent University, Tech Lane Ghent Science Park—Campus A, Technologiepark-Zwijnaarde 903, 9052 Zwijnaarde, Belgium
Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, 9000 Ghent, Belgium
Author to whom correspondence should be addressed.
Received: 23 June 2017 / Revised: 17 July 2017 / Accepted: 18 July 2017 / Published: 31 July 2017
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There is a trend to increase the length of wind turbine blades in an effort to reduce the cost of energy (COE). This causes manufacturing and transportation issues, which have given rise to the concept of segmented wind turbine blades. In this concept, multiple segments can be transported separately. While this idea is not new, it has recently gained renewed interest. In this review paper, the concept of wind turbine blade segmentation and related literature is discussed. The motivation for dividing blades into segments is explained, and the cost of energy is considered to obtain requirements for such blades. An overview of possible implementations is provided, considering the split location and orientation, as well as the type of joint to be used. Many implementations draw from experience with similar joints such as the joint at the blade root, hub and root extenders and joints used in rotor tips and glider wings. Adhesive bonds are expected to provide structural and economic efficiency, but in-field assembly poses a big issue. Prototype segmented blades using T-bolt joints, studs and spar bridge concepts have proven successful, as well as aerodynamically-shaped root and hub extenders. View Full-Text
Keywords: wind turbine blades; segmented/split blades; modular design; blade joints wind turbine blades; segmented/split blades; modular design; blade joints

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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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Peeters, M.; Santo, G.; Degroote, J.; Paepegem, W.V. The Concept of Segmented Wind Turbine Blades: A Review. Energies 2017, 10, 1112.

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