A cable holder, in particular for a cable of a wind turbine, to a cable harness, to a tower, to a wind turbine and also to a method for fastening a cable. In particular, a cable holder, in particular for a cable of a wind turbine, preferably for a medium-voltage cable connected to a medium-voltage transformer of a wind turbine, comprising a cable mount with a funnel-like cavity and also comprising an elastic insert, which is arranged within the funnel-like cavity, wherein the cable mount and the elastic insert are arranged and designed such that the cable can extend through the funnel-like cavity and the elastic insert can be clamped in between the cable mount and the cable.

An air blower includes an impeller, a motor, a lead wire, and a casing. The impeller rotates around a central axis extending in a vertical direction. The motor rotates the impeller. The lead wire is connected to the motor. The casing houses the impeller and the motor. The casing includes a bottom plate portion, a side wall portion, and a top plate portion. The bottom plate portion expands from the central axis in the radial direction and holds the motor on the upper surface of the bottom plate portion. The side wall portion extends axially upward from the outer peripheral portion of the bottom plate portion. The top plate portion is disposed axially above the impeller and is connected to the upper end of the side wall portion. The casing includes a lead-out port through which the lead wire is led out to the outside in the radial direction. The lead-out port includes a lower portion provided on the bottom plate portion and an upper portion provided on the side wall portion, and the lower and upper portions are defined by different members.

A wind turbine (10) is disclosed having a hub (14) with electrical power therein and at least one blade (20) attached to the hub. The blade (20) has a blade root (21), a blade tip (26) and a down-wire (30) for the conduction of lightning current to the ground. The wind turbine (10) further has a blade electrical system (99) that takes electrical power from the hub (14) and transmits electrical power into the blade (20) to at least one area located between the blade root (21) and the blade tip (26). The blade electrical system (99) if formed by a power-transfer unit (100) having a power-driver unit (110), a power-conditioner unit (130) and a dielectric (120) separating the power-driver unit (110) and the power-conditioner unit (130). The power-driver unit (110) receives electrical power from the hub (14) and transmit the electrical power through the dielectric (120) to the power-conditioner unit (130). An electrical-power bus (200) is electrically attached to the power-conditioner unit (130) and extends into the blade (20). At least one powered unit (300) is provided which is electrically connected to, and electrically powered by, the electrical-power bus (200).

A device for the control and management of at least one electric pump, comprising: an element for the actuation of the device, a user interface, connected to the actuation element.

The device comprises PLC data link means.

Provide is a lightning discharge system for a wind turbine including a hub, a spinner defining a protection space wherein the hub is arranged, a blade fixed to the hub, and a nacelle. The discharge system includes a blade band attached to the blade, a ring facing the nacelle and attached to the band and to the nacelle, a respective contact device connecting the band to the ring and the ring to the nacelle. The band and the ring are arranged in the space, and the ring is further attached to the hub such that it faces the nacelle through a rear opening of the spinner.

An offshore wind farm (1) comprising a number of wind turbine generator arrays (5). Each wind turbine generator array (5) comprises an array transformer (6) and a number of wind turbine generators (6) connected, in use, electrically to the array transformer (8). The array transformer (8) is associated with one wind turbine generator (6) among said number of wind turbine generators (6) and each array transformer (8) is, in use, electrically connected a bus bar (17) on the offshore substation (4). The bus bar (17) on the offshore substation is, in use, directly connected electrically to an export cable (3) or an HVDC converter (18).

The resonance wind turbine (1) comprises: a base assembly (10, 12, 18) for the fixing of the wind turbine (1) to a base surface (2), on the base assembly being located an oscillating element (3) provided with a proximal portion (4) associated with the base assembly (10, 12, 18) and a distal portion (5) opposed to the proximal portion (4) and adapted to oscillate, due to the effect of the incident wind blowing along a direction of propagation (A), in which the oscillation of the oscillating element (3) occurs along a main direction (B) substantially horizontal and perpendicular to the direction of propagation (A); and an electro-magnetic induction assembly (6, 7) associated with at least one of the base assembly (10, 12, 18) and the oscillating element (3), comprising a magnetic element (6) and an electrical winding (7) arranged in the proximity of the magnetic element (6) and adapted to produce electrical energy by means of the relative motion of the magnetic element (6) and the electrical winding (7) along the main direction (B);
wherein the base assembly (10, 12, 18) comprises a fixed portion (10) adapted to rest on the base surface (2) and a moveable structure (11) associated with the fixed portion (10) by means of oscillation means (18) adapted to allow the resonance oscillation of the moveable structure (11) along the main direction (B) due to the effect of the oscillation of the oscillating element (3).

A blade comprises a blade body and blade de-icer located on the leading edge of the blade body. The blade de-icer comprises a first heater part bonded to an external surface of a face side of the blade body and a separate second heater part bonded to an external surface of a camber side of the blade body. The first and second heater parts each extend to the leading edge of the blade body. Each heater part comprises an electrical heating element arranged therein sandwiched between an inner layer and an outer layer of the heater part.

A blade for a wind turbine including heating means connected to power cables, a lightning protection system including a down conductor, and surge protection devices is provided. The heating means include a first radiant element and a second radiant element arranged adjacent to each other around a leading edge of the blade, the first radiant element being connected to the power supply cables through respective electrical connectors at the respective connection points, and the down conductor is connected to each power supply cable at the connection points through the respective surge protection device, the second radiant element being connected to the first radiant element so that the second radiant element is electrically supplied only through the first radiant element.

A method, system, apparatus, and/or device for generating electrical power from a solar cell and rotational energy from a blade of a wind turbine. The method, system, apparatus, and/or device a blade of a wind turbine, a solar cell, and a rotor system. The blade may be blade configured to catch wind from a surrounding area to rotate the blade and convert kinetic energy into rotational energy. The solar cell may be connected to an exterior surface of the blade. The solar cell may be configured to convert solar energy into electric energy. The rotor system may be electrically connected to the solar cell to receive the electric energy from the solar cell. The rotor system may be configured to remain stationary relative to the blade as the blade rotates about an axis. The rotor system is configured to send the electric energy to a power source.