Rudong, China - 73 Plus erection


    In an offshore wind farm, wind turbines are inevitably in each other’s wake. As a result, not all energy is captured. Most turbines are not loaded to the full designed capacity due to wind conditions on specific sites or the location of the wind turbine in a wind farm. Hence there is an untapped potential to increase the Annual Energy Production (AEP) of a wind farm, if it could be equipped with various rotor diameters.

    The Hyller project looks at design, material, manufacturing and assembly processes to achieve the most flexible and cost efficient solution to address this. The concept is based on a standard basic blade part with variable tip lengths. It builds on an existing lightweight composite blade design, but innovates by using an assembly process, which leads to a permanent assembly of the two blade parts, adding minimal weight. The result is a larger rotor that increases annual energy production significantly for a relatively small investment. The flexible tips are expected to be manufactured separately, which enables the use of specific techniques and a one-shot manufacturing technology while providing economies of scale. Assembly is expected to be done on or near site. The consortium points to offshore as the area that will benefit most from the method as the improved performance from the blade length optimization will see a quicker pay back at sea. The new rotor blade will also be a universal solution that can be adapted to various turbines and applied in every wind farm. The overall objective is to develop a cost effective, flexible blade length concept with the potential to reduce cost of energy by 8-10%.

    Program: TKI Wind Op Zee (TKI-WoZ)
    Responsible company: LM  Wind Power R&D (Holland) B.V.
    Partners: LMWP (NL), UT Twente  (NL), ECN (NL)
    Period: 2014/4 - 2018/3 (4 years)

    Share this page

    Finished blades in a row outside LM Wind Power production facility in Qinhuangdao in China
    Innovate for Excellence


    Increasing annual energy production offshore.

    Rotor and blade in a wind turbine park.
    Innovate for Excellence


    Intelligent rotor solutions, allowing for longer and lighter blades.

    Innovate for Excellence

    Technology is in our DNA

    Our cutting-edge blade designs make wind power more compelling by reducing the cost of energy.

    Fill 1