64 results about "Lattice tower" patented technology

A power transmission tower carrying power lines has a wind turbine mounted to an upper portion of the tower. The wind turbine has a rotor which drives a generator for generating electric power. The generated power is stepped up using a transformer before being fed into one of the power lines. Optionally, electric power generated by a plurality of such wind turbines could be accumulated downstream and then transformed and fed into the grid at multiple-tower intervals. The wind turbine can be mounted on a lattice tower, a monopole tower or a hybrid tower. The wind turbine has either a fixed horizontal axis or a variable (but non-vertical) axis. Alternatively, a vertical-axis wind turbine may be used provided the generator is mounted at or near the top of the tower. Using existing infrastructure, the present invention supplements the capacity of a power grid with environmentally friendly power generation.

A wind turbine tower includes a lattice tower structure having a plurality of vertically oriented columns and cross-brace members. An adapter is molded onto a top of the lattice tower structure such that top portions of the columns are embedded into the adapter. The adapter may be a concrete member molded onto the lattice tower structure.

The invention relates to a wind turbine and to the installation of such a wind turbine, particularly offshore. When wind turbines are installed in the previously known manner, a tower of the wind turbine is firstly manufactured, said tower being a steel tower, a concrete tower or a lattice tower. After the tower has been erected, a machine house is mounted on the top of the tower and said machine house then consists of the entire nacelle, the generator, the rotor and other parts. Such a machine house with rotor blades attached thereto and a generator connected thereto is referred to in the following as a rotor unit. The object of the present invention is to provide technical measures enabling the installation of offshore wind turbines in almost any weather, even when waves are small or moderate in height. Wind turbine with a tower that receives a rotatably mounted support, wherein the support receives at least one and preferably a plurality of rotors that are in a plane offset from the tower, and the support is positioned such that the centre of the rotors is lower than the top of the tower.

The present disclosure is directed to a system and method for reducing vibrations of a tower (e.g. a tubular steep tower or a lattice tower structure) of a wind turbine. The method includes continuously determining a torsional movement of the tower based at least in part on measurements obtained from one or more sensors. Another step includes continuously determining, via a controller, a control command for one or more pitch drive mechanisms of the wind turbine based on the torsional movement. Thus, the method also includes operating the one or more pitch drive mechanisms based on the control command so as to dampen the torsional movement of the tower.

A lattice tower for use with a wind turbine. The lattice tower includes at least one support extending from a supporting surface. At least one cross-support member is coupled to the support to form the lattice tower. A reinforcement assembly is coupled to the support to transfer at least a portion of a bending load and a torsional load induced to the support to the reinforcement assembly to facilitate reducing a local distortion of the support.

The present disclosure is directed to a tower assembly for a wind turbine. The tower assembly includes a lattice tower portion, a tubular tower portion, and a transition region therebetween. The lattice tower portion includes a plurality of structural members connected together to define an open lattice tower. Further, the structural members include a plurality of supports and a plurality of cross-support members. The cross-support members are connected between the supports so as to define one or more openings. The tubular tower portion includes a lower portion and an upper portion. The first transition region includes a single-piece connection structure, a plurality of arm members, and a plurality of node connectors. The connection structure has a circumferential body configured to receive the lower portion of the tubular tower portion therein. Further, the node connectors join the plurality of supports of the lattice tower portion to the connection structure via the plurality of arm members.

A tower with exterior cable support preferably includes a tower structure, a base plate, a middle support structure, a top plate and at least three cables. The tower structure may be a tapered monopole tower, a step mono tower or a lattice tower. The base plate is attached to a base of the tower. The middle support structure is attached to substantially a midway height of the tower. The top plate is secured to substantially a top of the tower. One end of the at least three cables are secured to the base plate, a perimeter of the at least three cables are supported by the middle support structure and the other end of the at least three cables are secured to the top plate. The modular base preferably includes at least four foundation base members, a tower base member, a perimeter wall base and at least four wall members.

A method of erecting a wind turbine comprising the following steps: Providing the hub (9), the blades (11), the nacelle (13) and a lattice tower (15) comprising first and second sections (21, 27) pivotally connected along an axis (17) at a height H, in which the tower lower part, below height H, is composed by the second section (27), including the tower lower and upper legs (31, 33) and a first part (23) of the first section (21) and in which the tower upper part, above height H, is composed by a second part (25) of the first section (21). Assembling on ground the wind turbine, with the nacelle (13) resting on a carrier (19). Raising the second section (27) and fixing the upper legs (33) to second foundation corners (43). Raising the first section (21) and fixing its first part (23) to the second section (27).

The present invention provides a portable mobile communication tower (10) use for wireless communication applications comprising a) a portable cage (12) having side panels (38) and supporting frames (26) assembled thereof forming an enclosed base structure for the tower, wherein the structure is provided with adjustable stabilizer stands (30) and supporting legs (18) for leveling and supporting the cage (12) on uneven surface respectively, b) a mast or lattice tower (14) constructed in modular form and having an identical but in different predetermined size of sectional mast permitting the sectional mast to be assembled section-by-section by aid of removeably winch assembly; c) a bracing member (16) for supporting the mast or lattice tower (14) and serve as a supporting means to restricts sway movement of the sectional mast during assembling process; wherein the portable mobile communication tower (10) can be easily transported and rapidly assembled in place of used; and is able to dismantled and removed from the place in a simple, quick and safe mode so that can be readily transportable elsewhere or to be stored.

The invention discloses an all-direction prestressing force antifatigue composite steel structure wind tower and an installing method thereof. The wind tower comprises a steel structure tower tube, a transition section, a lattice tower frame and basic portions. The steel structure tower tube is fixed in the transition section, the transition section is located at the top of the lattice tower frame, and the lattice tower frame is arranged on the basic portions; the lattice tower frame comprises a tower pillar, prestressing force double steel stranded wires, oblique rods, horizontal rods and diaphragms, and the prestressing force double steel stranded wires penetrate through the tower pillar from the bottom to the top of the tower pillar; bottom ends of the prestressing force double steel stranded wires are fixed in the basic portions in an anchor mode, and the tops of the prestressing force double steel stranded wires are fixed on the top of the tower pillar in a stretch-draw mode; and the oblique rods are fixed on the tower pillar in an intersectional mode, and the horizontal rods and the diaphragms are fixed on the tower pillar in a spaced mode. The structure is reasonable, the force-carrying capability is reliable; and prestressing force is imposed on all sides, the fatigue life is prolonged, material consumption is little, and the construction through the installing method is convenient.

An assembly system for use in assembling a lattice tower section is provided. The system comprises a platform, a first mounting assembly coupled to the platform, and, a second mounting assembly coupled to the platform, the first and second mounting assemblies are configured to secure opposite ends of a plurality of leg members used in assembling the lattice tower section such that each of the plurality of leg members is suspended a distance from the platform, at least one of the first and second mounting assemblies is configured to selectively rotate a leg member of the plurality of leg members suspended therefrom.