Developing the PTO of the first MW-level Oscillating Wave Surge Converter

    Project: EU project

    Project Details


    The MegaRoller project will develop and demonstrate a Power Take-Off (PTO) for wave energy converters. The PTO
    is developed in conjunction with oscillating wave surge converters (OWSCs), a class of wave power technology that
    uses bottom-hinged plates oscillating in pitch following the surge movement of the water particles in the nearshore
    zone (10m-25m water depth). The development and demonstration of the PTO for a 1MW OWSC device is based on
    multiple hardware innovations (modular design, twin drive trains, intelligent cylinders, standardized central power
    unit and novel accumulator arrangement) and software innovations (wave-by-wave damping control, advanced
    efficiency control, energy storage control, power smoothing and prediction). The project will therefore generate
    extensive know-how in the area of PTO design and PTO control systems, with the aim to decrease the LCOE of next
    generation OWSC devices below €150/MWh. The methodologies used in the project (such as wave-by-wave damping
    control and prediction, standardized power units) will be applicable to many other Wave Energy Converter types and
    generate new standards (algorithms) for PTO control, thus benefiting the broader ocean energy community. The fullscale
    PTO will be validated in a PTO test rig available at AW-Energy in Finland, a facility allowing the consortium
    to create power matrices for the wave conditions of different sites, fine-tune the PTO control algorithms, certify the
    operation of the PTO and ensure that the produced electricity conforms to the various grid codes of different market
    areas. In the short term, the developments will increase performance (power conversion from 70 to 88%), increase
    reliability (lifetime x2, service intervals x2, O&M costs -75%), decrease costs (power density x2.8) and improve
    power quality. In the long term, a 40,000 MW roll-out of MegaRoller power plants can generate 400,000 jobs by 2050
    and 110M tons / year CO2 savings in Europe only.
    Short titleMegaRoller
    Effective start/end date1/05/1830/04/21


    • H2020-EU.3.3.2.