How SENSE works

The nacelle and rotor are assembled at the dockside with the rotor flat and the nacelle vertical. The transport carriage is fitted to the rotor assembly.

The transportation and handling system is mounted to the deck of a large construction vessel and the turbine carriage system interfaces with it. Two or three rotor assemblies can be transported on each vessel.

Dockside assembly

The construction vessel transports the rotor assemblies to the wind farm where towers have been pre-installed by a crane vessel in the usual way. Each rotor assembly slides on rails onto a handling system on the vessel which uses heave-compensated positional control to target and co-ordinate transfer to the tower rails. Once the rotor assembly is locked onto the tower the vessel detaches and moves away to install another turbine.

Construction vessel

A power and control umbilical is plugged into the wind turbine power system and the rotor assembly is raised up the tower on the multi-use transport carriage. This clamps to and climbs the ratchet rails on the tower. The blades lie horizontally and the rotor assembly is supported at its centre of gravity and locked vertical with an hydraulic ram fitted to the transportation unit until it reaches the top of the tower.

Transport carriage

Rotate at tower top

The nacelle and rotor are assembled at the dockside with the rotor flat and the nacelle vertical. The transport carriage is fitted to the rotor assembly.

Rotating at the top of the tower

At the top of the tower the rotor assembly is rotated around the attachment pivot by a hydraulic arm. Once horizontal the transport carriage lowers the rotor assembly on to the top of the tower for bolting. When it is secured the transport carriage is lowered to the bottom of the tower for collection by the construction vessel which heads back to port for more turbines.

A patent covering the SENSE installation system has been filed.