Problem

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Open trailing edge

Solution requested

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Stronger blades w. higher resistance tolerances

Reinforce existing blades to operate additional 10 years

Case details

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1.5 MW

Turbine

34m

Length

2003

Year of commision

Deliverables

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Technical opinion

Root cause analysis

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12 blades with D-String®

12 blades with D-Stiffener™

Case pictures

Results

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Reduction in O&M costs

10 yr. lifetime extension of blade seems feasible

Solution to be installed in more WTG 2020-2021

Cases

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D-Stiffener™

D-Stiffener™ installation on 75 blades in South America

D-Stiffener™

Effective solution against strong winds

D-Stiffener™

Elimination of open trailing edge in mid span