Wind turbine nacelle structure and a method of assembling a wind turbine nacelle structure

A nacelle of a wind turbine generator, comprising:

• a base frame that is separate from and which supports a main bearing housing, in use, the base frame being configured to connect with a lower portion of the main bearing housing;
• and
• a nacelle structure that is separate from and which is connected to the base frame at a first connection, wherein that nacelle structure extends away from the base frame and defines at least in part an interior nacelle volume,
• wherein the nacelle structure is separate from and connected to the main bearing housing by way of a second connection at a point arranged above a plane of a rotor axis of the main bearing housing,
• wherein the second connection comprises a connecting member that extends from the nacelle structure and is adapted for connection to the main bearing housing, and
• wherein the connecting member connects to the main bearing housing at an axially forward end thereof.

A nacelle of a wind turbine generator, comprising:

• a base frame that is separate from and which supports a main bearing housing, in use, the base frame being configured to connect with a lower portion of the main bearing housing;
• and
• a nacelle structure that is separate from and which is connected to the base frame at a first connection, wherein that nacelle structure extends away from the base frame and defines at least in part an interior nacelle volume;
• wherein the nacelle structure is connected to the main bearing housing by way of a second connection at a point arranged above a plane of a rotor axis of the main bearing housing,
• wherein the main bearing housing is substantially contained within the interior nacelle volume.

A method of assembling a nacelle for a wind turbine generator, the nacelle comprising a main bearing housing and a nacelle structure when assembled, the method comprising:

• transporting the nacelle structure and the main bearing housing separately to a site for construction of the wind turbine generator;
• arranging the main bearing housing directly onto a base frame of the nacelle, the base frame defining a first connection with the nacelle structure, the nacelle structure extending away from the base frame and defining at least in part an interior nacelle volume;
• and
• connecting the nacelle structure to the main bearing housing by way of a second connection at a point arranged above a plane of a rotor axis of the main bearing housing.

A method of assembling a nacelle for a wind turbine generator, the nacelle comprising a main bearing housing and a nacelle structure when assembled, the method comprising:

• transporting the nacelle structure and the main bearing housing separately to a site for construction of the wind turbine generator;
• arranging the main bearing housing directly onto a base frame of the nacelle, the base frame defining a first connection with the nacelle structure, the nacelle structure extending away from the base frame and defining at least in part an interior nacelle volume;
• and
• connecting the nacelle structure to the main bearing housing by way of a second connection at a point arranged above a plane of a rotor axis of the main bearing housing,
• wherein the method comprises connecting a reinforcing member between the nacelle structure and the base frame, prior to transporting the nacelle structure.