Examples of a device for generating electrical power are provided, including a rotor element, a stator element and an electrical generator. The rotor element includes a rotor axis, and the rotor element configured for turning about said rotor axis responsive to an airflow being applied thereto. The stator element is configured for directing the airflow from an outside of the device towards said rotor element. The electrical generator is coupled to the rotor element and is configured for being driven by rotation of the rotor element about the rotor axis to thereby generate electrical power. The device is configured for being affixed with respect to a surface such that the device projects above the surface by an external maximum vertical dimension. The rotor axis is nominally orthogonal to the surface, at least in operation of the device. The external maximum vertical dimension is less than 1 meter.

Provided is a wind power installation for converting the kinetic energy of the wind into the mechanical energy of rotation of a rotor for subsequent conversion of the mechanical energy of rotation into the electrical energy. A wind power installation includes a support frame, a shaft disposed on the support frame, and a blade system mounted on the shaft. The shaft is configured to rotate about a vertical axis and is functionally connected to an electric generator. The support frame is configured to be mounted between at least three radially arranged structures. The wind power installation can include additional blade systems disposed one above another on the shaft. Mounting the support frame between three radially arranged structures results in greater rigidity and robustness of the wind power installation, thus enabling the use of blade systems having a larger blade area and the arrangement of several blade systems on the shaft.

A vertical axis wind turbine (2) includes a vertical rotation shaft (3a) and a plurality of vertical blades (5) arranged around the rotation shaft and attached to the rotation shaft through an arm (6a, 6b). Each of the blades (5) includes a blade main part (5a) and blade-tip inclined parts (5b) extending from upper and lower ends of the blade main part (5a) toward the rotation shaft (3a). Each of the blade-tip inclined parts (5b) has a smaller thickness than a thickness of the blade main part (5a). A wind power generating device (1) includes a vertical axis wind turbine (2) having the above configuration and a generator (3).

A method of manufacturing a tower structure includes providing an additive printing device having at least one printer head atop a support surface. The method also includes positioning a pre-fabricated component adjacent to the support surface. The pre-fabricated component is constructed of a composite material reinforced with a plurality of reinforcement members. Further, portions of the plurality of reinforcement members protrude from the composite material. Moreover, the method includes printing and depositing, via the at least one printer head, a cementitious material onto the support surface to build up the tower structure layer by layer around the pre-fabricated component. Thus, the portions of the plurality of reinforcement members that protrude from the composite material reinforce the cementitious material around the pre-fabricated component.

Air stream-driven power-generating systems for electric vehicles have been described and illustrated.

An energy conversion unit for converting wind energy into electrical energy includes at least one rotor with a substantially horizontal axis of rotation, having a plurality of rotor blades extending radially to the axis of rotation, wherein the rotor has a flow direction which corresponds to the axis of rotation, a wall to be arranged next to a traffic route for vehicles which can move on the traffic route in a direction of travel and the movement of which causes an air flow, wherein the wall has a receptacle in which the rotor is arranged, wherein the receptacle has an opening on a side surface of the wall to be directed towards the traffic route, and wherein the axis of rotation of the at least one rotor is oriented substantially perpendicular to the direction of travel.

A system and method are provided for manufacturing a tower structure. Accordingly, one or more layers of a wall element are deposited with a printhead assembly. At least one recess is defined in the wall element. The recess(es) has a single, circumferential opening positioned along an inner reference curve or an outer reference curve of the wall element. The recess(es) also has a depth which extends in a radial direction and intersects a midline reference curve. A reinforcing element is placed entirely within the recess(es) at the midline reference curve.

A mainframe mounts the drivetrain of a wind turbine, and to an arrangement comprising such a mainframe, and to a wind turbine having a corresponding arrangement. For the purpose of mounting the drivetrain of a wind turbine, the mainframe is realized with two bearing points that are spaced apart from each other, a partial flange, having a fastening region shaped as a circular ring segment, being provided at at least one bearing point. The arrangement comprises, besides the mainframe, at least one ring element configured to radially encompass the drivetrain. At least one ring element is fastened to the fastening region, shaped as a circular ring segment, of a bearing point of the mainframe. In the case of the wind turbine, the drivetrain is mounted by means of the described arrangement.

A wind generator assembly for harnessing wind to charge batteries in electric vehicles and hybrid vehicles includes a housing that is mounted on a roof of a vehicle. The housing has a wind passage extending therethrough and wind passes through the wind passage when the vehicle is driven. A turbine is rotatably positioned in the housing. The turbine is positioned in the wind passage and the turbine is rotated by wind passing through the wind passage. A generator is mounted in the generator space and the generator is in mechanical communication with the turbine. Thus, the turbine rotates the generator when the turbine rotates thereby facilitating the generator to produce electrical current. The generator is electrically coupled to batteries in the vehicle to charge the batteries.

A novel rotation vibration damper and to vibration absorbers having the damper for wind turbines or other high and, relative to the height thereof, narrow installations or buildings. The disclosure particularly relates to vibration absorbers comprising at least one oscillating mass on a pendulum cable or pendulum rod, wherein the mass is caused to vibrate by an excitation frequency which can be damped by a rotation damper and, in particular, a rotating eddy current magnet damper which forms part of the absorber.