Hydrautrans has patented a mechanical-hydraulic-electrical wind turbine drivetrain solution, which is unique in offering superior lower LCoE performance through multiple technology-related and other benefits for next-generation offshore wind turbines.
Hydrautrans was awarded a European and PCT patent for its mechanical-hydraulic drive system in 2012 (European) and 2017 (PCT). An additional European,US, Chinese and Japanese patent covering different technology aspects was filed in 2013 and awarded.
Hydrautrans has developed a hydraulic drive train (HDT) with a higher power to weight ratio (kW/kg) and comparable cost per kg can make a new step in development possible. A solution is a hydraulic transmission. High power density for hydraulics is long time known but the efficiency of hydraulic pumps and motors is too low. HDT makes use of floating cup technology (FCT) what due to absence of metal to metal contact in pumps and motors lead to a high efficiency and absence of wear and tear.