Method of building a hybrid tower for a wind generator

Abstract

In the method of building a hybrid tower, a metal mast is erected and connected to a foundation and a concrete structure having a plurality of superimposed concrete segments is built around the metal mast by using the metal mast as a support. Afterwards, the metal mast is disconnected from the foundation and lifted by telescoping and guiding the metal mast along concrete structure. Finally, the lifted metal mast is connected to the concrete structure. Building of the concrete structure comprises: (a) installing at least one first segment of the concrete structure; (b) lifting the installed segment(s) of the concrete structure along the metal mast by guiding the lifted segments of the concrete structure using the metal mast, so as to clear a space having a sufficient height to receive a next segment of the concrete structure; (c) installing the next segment of the concrete structure in said space; and (d) repeating steps (b) and (c) until a last segment of the concrete structure is installed at a bottom part of the concrete structure.

Dependencies are inferred from the claim text.