Wind Power

Systems enable a reliable conversion of wind into electrical energy in the wind turbines. The optimised and application-oriented design for the respective function required ensures a considerably prolonged service life for components and machines. HYDAC subsystems support the modules and secure the technical availability of your WEC.


Solutions from HYDAC

  • Rotor blade adjustment (Pitch System)

Gears are positioned ahead of the generator. In order to generate electrical energy, the asynchronous or synchronous generators must be kept at a constant rpm. Because of the slowly turning rotors, transmission ratio is used to bring the rpm up to the maximum required generator rpm. HYDAC lubrication and cooling systems ensure safe and reliable availability of the gears.

  • Main gear

Gears are positioned ahead of the generator. In order to generate electrical energy, the asynchronous or synchronous generators must be kept at a constant rpm. Because of the slowly turning rotors, transmission ratio is used to bring the rpm up to the maximum required generator rpm. HYDAC lubrication and cooling systems ensure safe and reliable availability of the gears.

  • Generator, converter and transformer

Gears are positioned ahead of the generator. In order to generate electrical energy, the asynchronous or synchronous generators must be kept at a constant rpm. Because of the slowly turning rotors, transmission ratio is used to bring the rpm up to the maximum required generator rpm. HYDAC lubrication and cooling systems ensure safe and reliable availability of the gears.

  • Braking systems

The hydraulic pressure supply to the brake systems is supplied, either centralised or decentralised, by HPU (Hydraulic Power Units). The drive train brake acts upon a brake disk connected by either shaft or coupling and acts as the secondary braking system in wind power plants which have a pitch system. Due to safety considerations, bolts or slides are locked by means of hydraulic cylinder for maintenance work in or on the rotor. The gondola (engine house) is maintained in position by means of an Azimuth brake system. Compact hydraulic power units supply the energy for the hydraulic brake systems.

  • Azimuth direction angle

The turning of the nacelle on the tower is realised by means of electric or hydraulic drives. In the case of hydraulic drives, the drives also obtain their energy from the hydraulic system.

  • Mounting technology

The robust and modular design of the mounting systems which were specially developed for this application ensures an installation of the power cables in the tower which is not only simple and professionally correct but also optimised in terms of both time and expenditure, with "leaning tower" pre-installation and final installation in the "erected tower". The modular system also permits great flexibility with respect to quantity and alignment (individual, bundles of three, static, flexible) of the power cables in the tower, in the transition to the gondola, to the loop and also in the engine house itself.