A damper position-limiting device is provided, which is mounted in a tower to limit the swing amplitude of a damper installed in the tower. The damper position-limiting device includes at least one web and a position-limiting ring. The web is provided with a mounting hole and at least one stress relief hole. A first side wall of the web has a first specified length along a circumferential direction of the inner wall of the tower, and is connected to the inner wall of the tower. The position-limiting ring is positioned within the mounting hole and connected to the mounting hole and is configured to accommodate an impacting plate of the damper.

A device for damping vibrations in a structure including a first (or inner) element rotatably mounted around a rotational axis and a second (or outer) element rotatably mounted around said rotational axis. A radius (R1) of a circle portion delimitating the first element with respect to the rotational axis, being smaller than a radius (r2) of a circle portion delimitating the second element with respect to the rotational axis.

A wind turbine comprising a tower, a pod, at least one smoke detector in the region of the tower and/or in the region of the pod, at least one fan arranged in the tower and/or in the pod, and a control unit which detects a fire situation or smoke development in the wind turbine by means of the smoke detectors and activates the fans disposed in the tower and/or in the pod in order to suck away the smoke produced.

A wind turbine comprising a tower, a pod, at least one smoke detector in the region of the tower and/or in the region of the pod, at least one fan arranged in the tower and/or in the pod, and a control unit which detects a fire situation or smoke development in the wind turbine by means of the smoke detectors and activates the fans disposed in the tower and/or in the pod in order to suck away the smoke produced.

New down-wind horizontal axis turbine (DWHAT) systems or apparatus and methods for making and using same, wherein the DWHAT systems or apparatus include a base structure, a tower assembly or a derrick assembly anchored to the base structure, a drive assembly, a sail assembly, and a generator assembly, wherein the sails of the sail assembly are configured to catch wind downwind of the apparatuses or systems and wherein the drive assembly converts horizontal rotation of the horizontal shaft into vertical rotation of the vertical shaft that turns the generator generating electrical power that is transmitted to a power grid.

A wind turbine noise suppression system can include a sound absorbing batting and a fabric sheet within a column of the wind turbine. The sheet can hang within the column whereas the batting can be placed in at least a bottom and top region. A vibration isolation pad at the top of the column can mitigate a megaphone effect. The pad can be combined with an isolation washer. The pad can be less than a half inch thick, whereas the isolation washer can be less than a quarter inch thick. A sound curtain can be installed at a base of the column to suppress bell resonance. The system can, for example, reduce wind turbine noise up to ninety percent.

A wind turbine system able to withstand up to 150 mph winds, comprising the electricity generating components moved from the nacelle to the top of the tower, positioned vertically, and comprising: a main-shaft bearing; a gearbox; a brake assembly; a high-speed shaft; a generator; and an electrical control cabinet. The purpose of positioning in the tower is to protect the components from high winds, tornados, etc. and to regulate the rotation of the propellers to make more electricity. The turbine can be easily repaired onsite by removing covers on the upper tower; and with snap in replacement parts. Drone, which are stored in the top horizontal housing, can surveil and protect the turbine and the surrounding area. And, solar panels on the sides and/or cover of the top horizontal housing provide energy to the turbine in low and no wind conditions.

A wind turbine system able to withstand up to 150 mph winds, comprising the electricity generating components moved from the nacelle to the top of the tower, positioned vertically, and comprising: a main-shaft bearing; a gearbox; a brake assembly; a high-speed shaft; a generator; and an electrical control cabinet. The purpose of positioning in the tower is to protect the components from high winds, tornados, etc. and to regulate the rotation of the propellers to make more electricity. The turbine can be easily repaired onsite by removing covers on the upper tower; and with snap in replacement parts. Drone, which are stored in the top horizontal housing, can surveil and protect the turbine and the surrounding area. And, solar panels on the sides and/or cover of the top horizontal housing provide energy to the turbine in low and no wind conditions.

A set of units for assembly to form a wind turbine nacelle. The nacelle comprises a rotor-supporting assembly and generator, and a power conversion assembly and the set of units comprises a main unit arranged to be connected to a wind turbine tower and housing the rotor-supporting assembly and the generator, and at least two different auxiliary units each housing an operative component forming part of the power conversion assembly. To allow different wind turbine configurations, one of the auxiliary units can be selected from the at least two auxiliary units and assembled with the main unit to form the nacelle.

A seal arrangement is disclosed for sealing an interior space between a bearing housing and a rotatable shaft with respect to a surrounding area. The seal arrangement includes a seal body which can be fastened to the bearing housing with a first end and a second end. The seal body is extended in an elongate manner along a main extent direction and is configured to be arranged in an annular manner around the rotatable shaft in a mounted state. The first end and the second end have a common butt joint. A projecting region is arranged at the first end of the seal body and projects tangentially with respect to the rotatable shaft in the direction of a predefined main rotational direction of the rotatable shaft. The projecting region projects beyond the seal body and overlaps the butt joint.