New test bench can test wind turbine blades up to 130 meters long


Danish engineering firm R&D Take a look at Techniques has delivered the world’s largest dual-axis blade exciter to the US-based Massachusetts Clear Power Heart’s Wind Know-how Testing Heart (WTTC).

The event of recent and bigger wind generators has by no means been quicker than what we’re experiencing at the moment. Due to this fact, the remainder of the availability chain have to be ready and predict what OEMs will want subsequent with a purpose to preserve progress and restrict time-to-market. To accommodate this, the WTTC, which conducts large-scale wind turbine blade testing, ordered a brand new take a look at bench with the scale and energy to check the following era of wind turbine blades. That is a part of a $4 million greenback US DOE and MassCEC’s grant to improve blade testing gear to accommodate new and longer blades for bigger offshore turbine fashions.

With a brand new take a look at bench from R&D Take a look at Techniques, WTTC has a future proof take a look at setup with the chance to conduct dual-axis testing, permitting for extra sensible take a look at hundreds and outcomes. The brand new full-scale multi-axis fatigue blade take a look at system additionally shortens take a look at time, as WTTC can use the identical setup to check flap- and edge-wise fatigue assessments with out altering the take a look at setup.

Enchancment of the present blade take a look at system
In 2021, R&D Take a look at Techniques constructed the primary dual-axis blade exciter for the Danish Blade Take a look at Heart A/S (Blaest). Since then, R&D Take a look at Techniques has been engaged on constructing a bigger take a look at bench for the WTTC. The brand new dual-axis exciter is roughly 40% bigger in dimension and drive and is ready to apply 240 kN to the blade with an excitation energy of 420 kW, which permits the take a look at system to check blades of 130 meters in size.

“Delivering the primary blade take a look at setup of this dimension within the US is a milestone for R&D Take a look at Techniques. That is the primary business dual-axis system we’ve delivered. our US actions,” defined Key Account Supervisor Niels Pedersen from R&D Take a look at Techniques.

The blade exciter consists of two models that may present particular person drive and energy as much as 120kN and 210kW, respectively. The user-friendly software program permits customers to simply configure the take a look at system for various assessments. Each models can be utilized together for parallel or dual-axis operation or individually in different take a look at areas.

Utilizing exciter models in dual-axis operation permits OEMs to save lots of worthwhile time testing their blades. They’ll carry out flap- and edge-wise fatigue assessments utilizing only one take a look at system, saving changeover time when switching between assessments. As well as, the multi-axial setup permits utterly new take a look at situations that intently simulate what the blades are uncovered to onshore.

“As a take a look at facility, we have to be prepared for what the OEMs develop subsequent. And with this take a look at gear, we’ve the setup to fulfill the necessities, enhance the standard of the take a look at, and concurrently cut back an is the time to check the significance,” mentioned Rahul Yarala, Govt Director of WTTC.

After being assembled in Denmark, the take a look at bench was despatched to Boston, US. Throughout April, R&D Take a look at Techniques put in and commissioned the system on website. After a profitable commissioning, the take a look at system was handed over to WTTC, which has already run the primary take a look at cycles with the blade exciter.



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