ITFI20110088A1 - HIGH ALTITUDE WIND GENERATOR VIA THE PRESSURIZED WHEEL AND GROUND MOVEMENT TRANSMISSION THROUGH CABLE STRENGTH, CALLED ENERGYSUPPORT-GEA - Google Patents

Description

DESCRIPTION of the invention having as TITLE:

HIGH ALTITUDE WIND GENERATOR VIA PRESSURIZED WING AND GROUND MOVEMENT TRANSMISSION BY CABLE UNWIND, CALLED ENERGYSUPPORT-GEA

SUMMARY

High altitude wind generator by means of a pressurized wing and transmission of ground movement by unwinding of cable, wrapped around a coil that transmits the rotary movement to an electric generator. The intensity of the energy produced is sampled by a circuit that controls the unwinding speed in order to extract the maximum energy from the wind.

Description

The subject of the present claim is a High Altitude Wind Generator, consisting of one or more pressurized wings (1,2), held by a cable (4) wrapped around a coil (5) which unwinds with the force of the wind applied. to the wings and transmitted by the cable (4), which transmits the rotary movement to an electric generator (6) and whose intensity is sampled by a system (7) which controls the unrolling speed (9) through the electronic circuit (8) in order to extract the maximum energy from the wind.

In the state of the art, it is possible to exploit wind energy only in the first 80 - 100 meters above the ground, that is, where the speed, therefore the energy per square meter that can be extracted, is lower than the winds at high altitude.

To our knowledge, current systems exploitation of wind energy from high altitudes is carried out with kites similar to parachutes, for example for towing merchant ships, and suffer from poor maneuverability, difficulty in starting and recovering, limited useful relative angle between the direction of the ship and wind, energy transfer mismatch due to the inability to regulate the speed of the wing relative to the wind.

The purpose of the present subject matter is to allow an effective exploitation of the energy contained in the winds at high altitude by transferring it to the ground through the same traction of the cable. For example, for the production of electricity by exploiting the mechanical energy contained in the currents of altitudes around 1000 meters by dragging a double opposed wing by the wind capable of optimizing the horizontal component of the force exerted by the wind and unrolling the traction cable at a speed that maximizes the energy extracted.

The control of the inclination of the double-wing system with respect to the direction of the cable also allows, after the traction phase, to position the system almost vertically with respect to the point of application of the force on the ground and therefore to recover by providing a minimum amount of energy.

For example, for a ground-based electricity production system, in detail, the relevant advantages that can be obtained are:

1. Being able to draw on an energy source with a specific power between 200 and 1000 W / sq m instead of the 50 \\ 7 sq m at 80 meters.

2. Remarkable efficiency achievable as opposed to that of ground-mounted wind turbines even with small plants.

3. For the towing of merchant ships, all wind directions can be used with respect to the direction of navigation.

4. Sheltering of the equipment on the ground in case of too strong winds. Not feasible for wind turbines with consequent oversizing.

5. Maintenance can take place on the ground.

6. Very low disposal costs of disused plants.

Give another application example:

The application of an EnergySupport-GEA high-altitude wind system to merchant ships consisting of an electricity production system or an elastic system for storing the mechanical traction energy of the cable brings the following advantages:

1. All wind directions relative to the sailing direction are exploitable.

2. In the event that the direction of navigation is concordant with that of the winds at high altitude, a combination of towing and generation of electricity is obtained. 3. Stability and control of the towing direction with respect to the wind.

4. Energy production for the ship even in the event of a stop, for example while waiting at anchor.

Another example of application: Sport towing.

The pressurized wing can advantageously replace the kite used for skv sailing and kite-surfing.

If only the double wing is used and the cable fixed to the boat in the case of kite sailing or to the handles to which the surfer will hook. The advantages are:

- Greater towing force and greater stability.

- greater maneuverability and simplicity both during installation and withdrawal.

- Possibility of zeroing the towing force in case of need or danger.

Description of a Specific Realization

Specifically, an embodiment of the claimed material is described in its essential lines consisting of an energy generation plant of 5 KW of power intended to power the normal 220 V 50 Hz electrical network.

- A single wing is made of pressurized plastic material according to the parameters:

o Rope: 1.06m

o Width: 20.07 m

o Total area: m ^ 21.4

o Angle of attack: 9.72

o Chamber:% chord 18.04

o Thickness: 19.81% rope

o Wind speed: m / s 15.

Winds of 15 m / s are obtained at altitudes of 200 m with onshore winds of 10 m / s or at altitudes of 800 meters with onshore winds of 8 m / s.

By calculating the shape and therefore the forces generated according to the standard methodologies for passive wings, we obtain:

or vertical force: 786 Newtonians

or horizontal force: 108 newtons

o total force on the traction cable: 793 newtons

o power that can be generated by unwinding the cable at 7.5 m / s: Watt 5950

- The energy production system is composed of a dynamo in which the magnetic fields are represented partly by permanent magnets and partly by coils powered by the control system consisting of the circuit illustrated in the drawing relating to point (8).

- The cable and wing recovery system takes place in two phases: thanks to the auxiliary cable for controlling the angle of attack, the wings are brought as vertically as possible above the ground anchor and then the angle is varied up to to lose lift. Then we proceed to the recovery.

Claims (5)

Claims: 1) High Altitude Wind Generator, called EnergySupport-GEA consists of one or more pressurized wings (1,2), held together by a spacer (3), held by a cable fixed to the ground (4) where it is wrapped around a a coil (5) that unwinds with the force of the wind applied to the wings (1,2) and transmitted by the cable (4), which transmits the rotary movement to an electric generator (6) and whose intensity is sampled by a system (7) which controls the unrolling speed (9) through the electronic circuit (8) in order to extract the maximum energy from the wind. 2) The wings according to claim 1 can be arranged in pairs and opposite each other, shaped and inclined so as to obtain both the maximum energy transfer from the wind and an adequate lift. 3) The electronic circuit (8) is based on the memory of the signal of the instantaneous power produced by the dynamo (6) and sampled by the circuit 7 and averaged over a long period and a short period. The difference between the two periods determines the direction of the correction in the release speed of the cable to obtain the maximum of the extracted energy. The control circuit (8) consists of a first part with two circuits consisting of a resistor and a capacitor and an operational for comparison. The output signal from the operational is the input for a switching power supply. 4) In general the circuit (8) is able to drive systems both towards the maximization and towards the minimization of a dependent variable by controlling the independent variable which represents the input value of the circuit. The memory of the dependent variable consists of a short-term and a long-term part. In the case of maximization, when the long-term part is less than the short-term part, the circuit will induce an increase in the control variable, represented by the circuit output. When the long-term part is greater than the short-term part, the circuit will induce a decrease in the control variable. Conversely, in the case of minimization, when the long-term part is greater than the short-term part, the circuit will induce an increase in the control variable. When the long term part is less than the short term part, the circuit will induce a decrease in the control variable. 5) In the specific case, the electronic circuit (8) pursues the maximization of the energy output from the power generator (6), and is based on the memory of the signal output from the power generator (6) and is able to correct the speed of unwinding of the coil (5) by varying the efficiency of the generator (6) so as to decrease efficiency in case the energy extracted from the wind is decreasing. In other words, if the energy extracted in the short term is greater than that extracted in the long term, an increase in efficiency will be requested from the generator (6). If, on the other hand, the energy extracted in the short term is less than the energy extracted in the long term, a decrease in the efficiency of the generator will be required (6).