The present invention relates to a method for controlling airborne wind energy systems (AWES), e.g. with kites, in a wind energy park connected to an electrical grid. By appropriately controlling these AWES to produce electrical power to the electrical grid by alternating between a power production phase and a recovery phase by cable control or changing kite aerodynamics, it is possible to better balance the supply of the net power production to the electrical grid. In this way, the invention may stabilize the electrical grid and can have a grid forming capability. Furthermore, the wind energy park may stabilize the grid during a fault ride-through (FRT) event.

An aerial vehicle (10) has an aerial platform (12) that supports lift elements (11), an engine (14) and a fuel supply (15) and that has a coupling mechanism (16) adapted for coupling to a removable load (17). The lift elements include a soft or flexible wing (11) flexibly coupled to the aerial platform at points of suspension on opposite sides of the aerial platform whose location (A, B) relative to a longitudinal axis of the platform is such that the aerial platform and the attached load has a center of gravity (C.G.) which maintains balance of the aerial platform. An adjustment system (18) is coupled to the points of suspension and is operative for moving the points of suspension relative to the longitudinal axis of the platform when cargo is unloaded from the flying platform to preserve balance.

The present invention relates to wind energy park connected to an electrical grid, having airborne wind energy systems (AWES), e.g. with kites. The wind energy park has an electrical DC network connecting the plurality of AWES and a grid converter unit for converting DC to AC, and transmit AC to the electrical grid. The wind energy park control unit controls the AWES to produce electrical power to the electrical grid by alternating between a power production phase, and a recovery phase so to balance the supply of power to the electrical grid according a demanded setpoint. An advantage is that the grid converter may be smaller, as compared to an AC network, because the power is evened out with the negative power from the AWES being in recovery phase. In this way, the invention stabilizes the grid and has a grid forming capability.

A kite control system for controlling a kite which includes a plurality of rotators, a plurality of guiding elements locatable between each of the plurality of rotators and the kite, a plurality of adjustable deflectors, a plurality of deflector guides configured to adjust the operational length of the kite connecting line upon adjustment of the deflector, at least one invert correlator for, when in use, inversely correlate the adjustment of the operative length of the respective kite connecting lines, wherein the plurality of kite connecting lines includes the connection of at least one of the kite connecting lines at the kite biased towards the leading end region of the kite, and the connection of at least another kite connecting line biased towards the trailing end region of the kite.

Flying artefact for aerial advertising to be pulled from the surface or tied up to a fixed point, which includes an element of elevation and suspension in the air (1) with advertising medium function, built in a very light and resistant material, with the shape of an aerodynamic profile, which has an opening (4) at its front part reinforced with light and resistant tubes, and an opening (5) on its back, which has a curved upper surface (6), a flat lower surface (7), and two vertical lateral surfaces (9), which acquires its shape when the air passes through its four surfaces; a pulling or clamping line (3) which is tied up to the chosen pulling means or fixed point; at least two ropes (2) that connect the pulling or clamping line (3) with the front opening (4); the advertising message (10) being placed and directly exhibited on both sides and all along the element of elevation and suspension (1).

In the current invention, the parafoil follows a longitudinal trajectory away or towards the generator. The work is created along the path of the line, not across. When the parafoil is extended away from the vehicle generating power, the parafoil is set by the control system in a high drag configuration. When the parafoil reaches the end of the line (or close to it), the controller sets up the parafoil in the retraction mode. In this mode, the parafoil still creates lift, but, at a significantly lower drag, and therefore, the ground station can easily retrieve it by pulling the line towards the vehicles.

In the current invention, the parafoil follows a longitudinal trajectory away or towards the generator. The work is created along the path of the line, not across. When the parafoil is extended away from the vehicle generating power, the parafoil is set by the control system in a high drag configuration. When the parafoil reaches the end of the line (or close to it), the controller sets up the parafoil in the retraction mode. In this mode, the parafoil still creates lift, but, at a significantly lower drag, and therefore, the ground station can easily retrieve it by pulling the line towards the vehicles.

A control bar stopper includes a stopper body having a sleeved line receiving slip groove that allows sleeved line slippage. The stopper body has an underlying control bar bumper. A brake body is provided having a sleeved line receiving stop groove that resists sleeved line slippage. The brake body is smaller than the stopper body and is positioned above and at a distance from the control bar bumper with the stop groove facing the slip groove. A pivotal link connects the stopper body and the brake body. In response to a control bar striking the control bar bumper, the slip groove allows the stopper body to slide along a sleeved line and as the stopper body slides along the sleeved line, the brake body pivots about the pivotal link into stop contact with the sleeved line with the stop groove resisting further slippage.

A control bar stopper includes a stopper body having a sleeved line receiving slip groove that allows sleeved line slippage. The stopper body has an underlying control bar bumper. A brake body is provided having a sleeved line receiving stop groove that resists sleeved line slippage. The brake body is smaller than the stopper body and is positioned above and at a distance from the control bar bumper with the stop groove facing the slip groove. A pivotal link connects the stopper body and the brake body. In response to a control bar striking the control bar bumper, the slip groove allows the stopper body to slide along a sleeved line and as the stopper body slides along the sleeved line, the brake body pivots about the pivotal link into stop contact with the sleeved line with the stop groove resisting further slippage.

The invention discloses a light kite comprising a body. The body includes a wing, a supporting member, and a tying place, the supporting member is arranged on the wing and integrally formed with the wing, the body of the kite is made of a blister material or a material capable of being embossed or indented, and the supporting member is made by blistering or embossing or indenting on the wing, so that the supporting member is integrally formed with the wing and maintains a shape of the body. The kite is made of a blister material or composite paper, the durability and plasticity are high; moreover, the support member is made by means of plastic package, some existing kite production processes can be omitted, and the local production in large scale can be achieved.