Patent ID: 8148837

Claim:
A floating offshore wind turbine comprising: a tower structure body that is configured with a tower and a foundation thereof; a rotor that is supported at the top of the tower; a power generator that generates electric power by the rotation of the rotor; a power converter that converts electric power output from the power generator; wherein a cavity is formed in the tower and the foundation; wherein an internal space configured with the cavity in the tower and the foundation is divided into an upper chamber and a lower chamber by a bulkhead between the tower and foundation or in the tower or foundation; wherein the power converter is disposed in the upper chamber; and wherein a first air vent and a second air vent are formed at the bulkhead; and an air circulating channel and an air blower wherein air is circulated from the power converter to the lower chamber through the first air vent, then from the lower chamber to the power converter through the second air vent.