750kW U54 Wind Power

Schools, Office Buildings, Resort Hotels, Agricultural Businesses, Manufacturing Plants, Remote Islands

Our new and innovative Gearless 750kW Wind Turbine offer simplicity by eliminating gearbox in the nacelle. Our turbines are reliable. They are the result of highest engineering technology and intensive research and development. With a fully encapsulated PM synchronous generator, they are particularly beneficial for weak grids in remote areas.

Turbine System

Model SURU54 177-750
Rated Kilowatt Output 750kW
Cut-In Wind Speed 3.0 m/s (6.7 mph)
Cut-Out Wind Speed 25 m/s (56 mph)
Rated Wind Speed 11.5 m/s (25.7 mph)
Max Design (Survival) Wind Speed 59.5 m/s (133 mph)
Weight (lbs.)  
Design Lifetime (yrs) 20

Turbine Rotor

Number of Blades 3
Orientation Upwind
Axis (nominal) Horizontal
Rotation Clockwise
Blade Material Glass / epoxy compound
Rotor Diameter 54 m (177 ft)
Swept Area 27,405 ft²
Rotor RPM at rated output power 9-28 rpm
Speed Control  
Normal Shutdown Brake Aerodynamic blade pitch
Emergency Shutdown Brake Active hydroloc disk brakes
Blade Pitch Control Control pitch controlled variable speed
Yaw Control Active, electromechanically driven with wind direction / speed sensors


Type Synchronous Permanent Magnet Direct Drive
Voltage 690 VAC
Frequency (Hz) 60/50


Type No gearbox (direct-drive)

Brake System

Type Main brake action rotor blade pitch

Support Towers

Type & Material Tubular steel monopole


Model U54 U57
Rotor Diameter 54m 57m
Hub Height 60m 68m
Wind Speed Region Medium-Low Low
  • For all wind regimes (wind class 1, 2, 3)
  • Maintenance procedures simplified and maintenance time reduced substantially
  • Less noise production than gear-box based turbines

Simple & Compactness:

  • Direct drive concept without gearbox
  • Low speed PM synchronous generator
  • Modular construction & flexibility to up-scaling

High Reliability & Availability:

  • Two separated roller bearings
  • Only torque moment is transmitted to the generator and housing
  • Fully encapsulated generator
  • Low rotational speed for whole component

Optimal Energy Production:

  • Full range variable speed operation at optimal Cp
  • Pitch and torque control with smart controller
  • Improved generator efficiency by permanent magnet

Grid-Friendly Electricity:

  • Generation of electricity power with high efficiency & quality variable operation & pitch control system


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