Nordex has been granted a patent for a wind turbine rotor blade featuring an aerodynamic add-on element. This element includes a tilted baseplate that creates a triangular gap with the rotor blade’s surface, filled with adhesive to enhance bonding and aerodynamic performance during operation. GlobalData’s report on Nordex gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Nordex, Aerial inspection drones was a key innovation area identified from patents. Nordex's grant share as of July 2024 was 64%. Grant share is based on the ratio of number of grants to total number of patents.

Aerodynamic add-on element for wind turbine rotor blades

Source: United States Patent and Trademark Office (USPTO). Credit: Nordex SE

The granted patent US12044202B2 describes a wind turbine rotor blade that incorporates an aerodynamic add-on element designed to enhance performance. The rotor blade features a body with an outer surface and an add-on element that includes a planar baseplate. This baseplate is mounted such that its bottom side faces the rotor blade body, creating a gap that increases in height along the downstream direction of the wind flow. The gap is triangular in shape, and an adhesive fills this space to securely bond the add-on element to the rotor blade. The claims specify various configurations of the gap, including height variations ranging from 0.1 to 1 millimeter, and the presence of structural features like webs and spacers that further define the relationship between the add-on element and the rotor blade body.

Additionally, the patent outlines several design variations for the aerodynamic add-on element. These include the inclination of the baseplate, the use of spacers that can take different forms (line-shaped, cylindrical, or point), and the arrangement of sections of the bottom side of the add-on element. The design aims to create a gradual transition between the add-on element and the rotor blade body, optimizing aerodynamic efficiency. The claims also detail how the adhesive is distributed within the gap, ensuring effective bonding while maintaining structural integrity. Overall, the patent presents a comprehensive approach to improving wind turbine rotor blade design through innovative aerodynamic enhancements.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.