Nacelle for a wind turbine, the nacelle comprising side units

A method for erecting a wind turbine comprising a nacelle comprising:

• erecting a wind turbine tower,
• mounting a main unit on the wind turbine tower, via a yawing arrangement, the main unit having a top, a bottom, and at least one side between the top and bottom, the at least one side defining a mounting plane,
• hoisting at least one side unit to a position adjacent to the at least one side of the main unit, wherein no structural component associated with the main unit protrudes through the mounting plane such that the at least one side unit is hoisted directly adjacent and substantially parallel to the mounting plane of the main unit, and
• connecting the at least one side unit to the at least one side of the main unit in such a manner that the main unit and the at least one side unit are distributed side-by-side along a substantially horizontal direction which is substantially traverse to a rotational axis of a rotor of the wind turbine.

A nacelle for a wind turbine, comprising:

• a main unit arranged to be connected to a wind turbine tower, via a yawing arrangement, the main unit having a top, a bottom, and at least one side between the top and bottom, the main unit having an interior;
• and
• a first side unit and a second side unit mounted along the at least one side of the main unit in such a manner that the main unit and each of the first side unit and the second side unit are distributed side-by-side along a substantially horizontal direction which is substantially transverse to a rotational axis of a rotor of the wind turbine, each of the first side unit and the second side unit having an interior,
• wherein a substantially vertical wall extends between the main unit and the first side unit and the second side unit to separate the interior of the main unit and the interior of the first side unit and the second side unit, the wall including a first door to allow passage between the interior of the main unit and the interior of one of the first side unit or the second side unit in the substantially horizontal direction, and
• wherein at least one wind turbine component is mounted within the interior of and supported by one of the first side unit or the second side unit.