Abstract:
A transition structure for a tower comprises a plurality of panels that each includes a panel body having opposed upper and lower ends, a lower mounting surface at the lower end, an upper mounting surface at the upper end, and a pair of lateral mounting surfaces at lateral edges. The upper mounting surfaces are generally planar, and the panel bodies taper from their upper mounting surface to their lower mounting surface. Each panel is mounted to at least another of the panels at corresponding lateral surfaces to form, with the upper ends, the shape that conforms to the lower end of the tower to be supported. The transition structure also comprises a plurality of footings,each having an upper end mated to the lower mounting surface of one of the panels, a lower end configured to mate with a post of a foundation, and a footing body between the upper and lower ends.
Abstract:
A generator (5) for a wind turbine (1) and a wind turbine (1) are disclosed. The generator (5) comprises a rotor (3) configured to rotate about a rotational axis, and at least one stator (4) arranged next to the rotor (3), each stator (4) comprising at least one flux-generating module (9) facing the rotor (3) but spaced therefrom. The flux-generating module(s) (9) is/are mounted on a stator support structure (7, 10). The stator support structure (7, 10) defines a preloaded spring force acting against magnetic forces occurring between the rotor (3) and the flux-generating module(s) (9) during operation of the generator (5). The preloaded spring force is adjustable, e.g. by means of a piston arrangement (17). Thereby it is possible to maintain a preloaded spring force which is capable of acting against the magnetic forces occurring between the rotor (3) and the flux-generating module(s) (9), even if operating conditions are changed. Furthermore, the preloaded spring force may be adjusted to compensate for inaccuracies originating from production tolerances of the stator support structure (7, 10). A uniform and constant air gap can thereby be maintained between the rotor (3) and the flux-generating module(s) (9).
Abstract:
A generator (5) for a wind turbine (1) is disclosed. The generator (5) comprises a rotor (3) configured to rotate about a rotational axis, and at least one stator (4) arranged next to the rotor (3). Each stator (4) comprises at least one flux-generating module (9) facing the rotor (3) but spaced therefrom, thereby forming an air gap between the rotor (3) and each flux-generating module (9). Each stator (4) also comprises at least one bearing unit (12), each bearing unit (12) comprising a body (16) defining a cavity (14) with an open end facing the rotor (3). The generator (5) further comprises a source of pressurized fluid communicating with each bearing unit (12), and the body (16) of each bearing unit (12) directs the fluid towards the rotor (3) to help maintain the air gap between the rotor (3) and each flux-generating module (9). Thereby the air gap between the rotor (3) and the flux-generating modules (9) is controlled by means of the fluid bearing units (12). The invention further provides a wind turbine (1) comprising such a generator (5).
Abstract:
A wind energy converter is disclosed, comprising a wind turbine and climate control means operable as dehumidifying means for separating and removing humidity from air within one or more areas of said wind turbine, comprising at least one cooling device for condensing humidity as well as at least one drain device for draining condensed water from said one or more areas being dehumidified. Said wind energy converter comprises cooling flow means for providing a flow of a cooling liquid to the at least one cooling device, thereby providing a heat sink for said cooling device.
Abstract:
The invention relates to a heating system comprising at least one wind turbine, one or more wind turbine components producing surplus heat, and one or more cooling systems for removal of said surplus heat from said wind turbine components. The heating system also comprises means for transporting at least a part of said surplus heat to heating processes in at least one location external to said at least one wind turbine. The invention also relates to a wind turbine or wind park as well as a method for utilizing surplus heat of one or more wind turbine components. Furthermore the invention also relates to use of a method for utilizing surplus heat of one or more wind turbine components in at least one wind turbine.
Abstract:
A heating system includes at least one wind turbine, one or more wind turbine components producing surplus heat, and one or more cooling systems for removal of the surplus heat from the wind turbine components. The heating system also includes a mechanism for transporting at least a part of the surplus heat to heating processes in at least one location external to the at least one wind turbine. A wind turbine or wind park as well as a method for utilizing surplus heat of one or more wind turbine components is also contemplated. Further contemplated is use of a method for utilizing surplus heat of one or more wind turbine components in at least one wind turbine.
Abstract:
A heat exchanger assembly for cooling a heat-generating component, such as a generator or power electronics module, within a wind turbine nacelle comprises a thermoelectric element, such as a Peltier element, having a first section arranged in a first region of relatively high temperature in contact with the heat-generating component or in the vicinity thereof, and a second section arranged in a second region of a relatively low temperature. The thermoelectric element is configured to transfer heat from the first region of relatively high temperature to the second region of relatively low temperature with consumption of electrical energy. A source of electrical energy is provided for the thermoelectric element, and a control unit may be provided for controlling the energy supply in order to control the temperature of the component or surface area cooled by the thermoelectric element. A further cooling element including a so-called heat pipe may be provided to enhance cooling efficiency.
Abstract:
A generator (5) for a wind turbine (1) and a wind turbine (1) are disclosed. The generator (5) comprises a rotor (3) configured to rotate about a rotational axis, and at least one stator (4) arranged next to the rotor (3), each stator (4) comprising at least one flux-generating module (9) facing the rotor (3) but spaced therefrom. The flux-generating module(s) (9) is/are mounted on a stator support structure (7, 10). The stator support structure (7, 10) defines a pre-loaded spring force acting against magnetic forces occurring between the rotor (3) and the flux-generating module(s) (9) during operation of the generator (5). The preloaded spring force is adjustable, e.g. by means of a piston arrangement (17). Thereby it is possible to maintain a preloaded spring force which is capable of acting against the magnetic forces occurring between the rotor (3) and the flux-generating module(s) (9), even if operating conditions are changed. Furthermore, the preloaded spring force may be adjusted to compensate for inaccuracies originating from production tolerances of the stator support structure (7, 10). A uniform and constant air gap can thereby be maintained between the rotor (3) and the flux-generating module(s) (9).
Abstract:
A wind turbine comprising a nacelle (1) is disclosed. The nacelle (1) accommodates at least a generator (3) and power electronics electrically interconnected between the generator (3) and a power grid. At least one power electronic component (10, 11, 12) is removably arranged in the nacelle (1) in a region positioned between a floor level of the nacelle (1) and a lower limiting surface, e.g. a bottom wall, of the nacelle (1). The space available in the interior parts of the nacelle (1) is thereby utilised to a greater extent than in prior art wind turbines, and replacement of a power electronic component (10, 11, 12) can be performed using ordinary lifting equipment. Furthermore, the risk of injury to maintenance personnel is reduced.