Abstract:
The invention provides a method for handling a wind turbine blade using an airship (2), comprising arranging the blade (101) at least partly inside the airship (2), such that a longitudinal axis (BLA) of the blade (101) is substantially parallel to a longitudinal axis (ALA) of the airship (2).
Abstract:
The invention provides a method for servicing a wind turbine (1), comprising a sequence of steps as follows: shutting the wind turbine (1) down, attaching a workshop (3) to the wind turbine (1), moving a wind turbine component (111, 112) from the wind turbine (1) into the workshop (3), performing a service measure on the component (111, 112) in the workshop (3), moving the component (111, 112) from the workshop (3) to the wind turbine (1), and starting the wind turbine (1).
Abstract:
A multirotor wind turbine (1) comprising a tower structure (2) and at least one load carrying structure (3), each load carrying structure (3) being arranged to carry two or more energy generating units (5), is disclosed. The wind turbine (1) further comprises a yawing arrangement (6) comprising a first part (9) being fixedly connected to the tower structure (2) and a second part (10) being fixedly connected to at least one of the load carrying structure(s) (3). The first part (9) and the second part (10) are configured to perform rotating movements relative to each other, thereby allowing the load carrying structure (3) to perform yawing movements relative to the tower structure (2). At least one guy wire (7) is connected between an anchoring point (8) at the ground and the first part (9) of the yawing arrangement (6). The invention further provides a yawing arrangement (6) for such a multirotor wind turbine (1).
Abstract:
The invention relates to a method for dismantling a wind turbine and erecting a wind energy generating system, wherein the wind turbine comprises a tower placed on a foundation on a wind turbine site and a nacelle with a rotor mounted on the tower. The method comprises the steps of removing the rotor from the wind turbine, mounting an airborne wind energy system for generating electrical power on a part of the remaining wind turbine via a cable, and electrically connecting the airborne wind energy system to a power grid via a power transmission line.
Abstract:
A method for erecting a multirotor wind turbine (10) is disclosed. A carrier structure (1, 1a, 1b) is arranged circumferentially with respect to a tower structure (2) and hoisted to an upper part of the tower structure (2), using a hoisting arrangement, such as a wire winch arrangement (3, 4, 8). Furthermore, energy generating units (5) may be hoisted to the carrier structure (1, 1a, 1b) using the hoisting arrangement (3, 4, 8). A similar method for dismantling a multirotor wind turbine (10) is also disclosed. The multirotor wind turbine (10) can be erected or dismantled without the need for an external crane.
Abstract:
The present invention relates to a wind turbine system comprising a plurality of wind turbines mounted to a common support structure (4) by a support arm arrangement (10) comprising a mount portion (12)and at least one arm (13) extending from said mount portion and carrying a respective wind turbine (6).Said support arm arrangement (10) is capable of yawing around said support structure (4); and said wind turbine system comprises an improved arrangement for cable guiding in this connection.
Abstract:
A wind turbine (11) comprising a tower structure (12, 13) and two or more rotors (1). Each rotor (1) comprises a hollow king pin (2) and a hub (4) carrying one or more rotor blades (14). The hollow king pin (2) is formed in a single cylindrical piece, and is mounted on the tower structure (12, 13). The hub (4) is rotatably mounted on the hollow cylindrical king pin (2). A generator (6) is operationally coupled to the hub (4) in such a manner that rotational movements of the hub (4) are transferred to the generator (6).The tower structure comprises a main tower part (12) being anchored, at a lower part, to a foundation structure, and at least two arms (13), each arm (13) extending away from the main tower part (12) along a direction having a horizontal component. Each arm (13) carries at least one rotor (1).
Abstract:
A wind turbine system comprising a plurality of wind turbines mounted to a support structure including a tower, wherein each of the plurality of wind turbines includes a rotor and a power generation system driven by the rotor, and at least one of a rotor blade pitch adjustment means and a generator power control means. The system further includes control means that receives vibration data associated with the support structure and which is configured to determine a damping control command for a respective one of the plurality of wind turbines, wherein the or each of the wind turbines includes a damping controller that receives a damping control command and which is operable to apply a damping control input to one or both of the blade pitch adjustment means and the generator power control means so as to counteract the measured vibration of the support structure. A benefit of the invention is that the operation of the multiple turbines of the system is used to reduce the effects of structural vibration by damping that vibration in an active manner.
Abstract:
A wind turbine comprising, a tower, a nacelle mounted on the tower, and a rotor defining a rotor axis extending in a vertical center plane and configured for harvesting wind energy by rotation of blades in a rotor rotation direction about the rotor axis. The nacelle comprises a rotor-supporting assembly forming a load path from the rotor to the tower and configured for receiving rotor torque caused by the rotation of the rotor. To reduce loading of the tower and potentially provide a cheaper construction, the nacelle has a center of gravity which is offset from the center plane in a direction relative to the rotor rotation direction to counteract the rotor torque.
Abstract:
Aspects of the present invention relate to a method (100) for performing maintenance on a wind turbine generator (60). The method (100) comprises: controlling (102) a first aerial vehicle (20) to navigate to the wind turbine generator (60); establishing (104) a fluid flow path between a component (88a-e) of the wind turbine generator (60) and a first storage container (42) mounted on the aerial vehicle (20); and transferring (106) a first volume of an operational fluid between the component (88a-e) and the storage container (42).