Flying Windmills or Flying Electric Generator (FEG) technology
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.doc   harnessing high altitude wind power.doc (Size: 2.17 MB / Downloads: 564)
Flying Windmills or Flying Electric Generator (FEG) technology

ABSTRACT

High Altitude Wind Power uses flying electric generator (FEG) technology in the form of what have been more popularly called flying windmills, is a proposed renewable energy project and implimentation over rural or low - populated areas, to produce around 12,000 MW of electricity with only 600 well clustered rotorcraft kites that use only simple auto gyro physics to generate far more kinetic energy than a nuclear plant .
According to Sky Wind Power; the overuse of fossil fuels and the overabundance of radioactive waste from nuclear energy plants is taking our planet once again down a path of destruction, for something that is more expensive and far more dangerous in the long run. FEG technology is just cheaper, cleaner and can provide more energy than those environmentally unhealthy methods of the past, making it a desirable substitute/alternative.
The secret to functioning High Altitude Wind Power is efficient tether technology that reaches 15,000 feet in the air, far higher than birds will fly, but creating restricted airspace for planes and other aircraft.
The same materials used in the tethers that hold these balloons in place can also hold flying windmills in place; and with energy cable technology getting ever lighter and stronger .Flying windmills appear to be 90 percent more energy efficient in wind tunnel tests than their land-based counterparts; that is three times more efficiency due to simple yet constantly abundant and effective high altitude wind power, available only 15,000 feet in the air by way of clustered rotor craft kites tethered with existing anti-terrorist technologies like those used on the Mexican/American border radar balloons.
High Altitude wind power offers itself as a clean and more powerful source of power generation than anything available on-the grid at present and if sky wind power corp. has their way, FEG technology and flying windmills will take the lead of a more sustainable future within the decade.
Flying electric generators (FEGs) are proposed to harness kinetic energy in the
powerful, persistent high altitude winds. Average power density can be as high as 20 kW/m2 in a approximately 1000 km wide band around latitude 30in both
Earth hemispheres. At 15,000 feet (4600 m) and above, tethered rotorcraft, with four or more rotors mounted on each unit, could give individual rated outputs of up to 40 MW. These aircraft would be highly controllable and could be flown in arrays, making them a large-scale source of reliable wind power. The aerodynamics, electrics, and control of these craft are described in detail, along with a description of the tether mechanics. A 240 kW craft has been designed to demonstrate the concept at altitude. It is anticipated that large-scale units would make low cost electricity available for grid supply, for hydrogen production, or for hydro-storage from large-scale generating facilities.
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shinju
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#2
19-11-2010, 09:55 AM

please send me ppt of flying electric generator
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computer science crazy
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#3
19-11-2010, 11:55 AM

sorry for ready made ppt of flying electric generator is not available now ..
please make a new one , i may can help you to collect resources ,,,
use this some link to make
topicideashow-to-harnessing-high-altitude-wind-power-full-report
inhabitat2007/07/17/flying-wind-turbines/
googleimages?q=flying%20electric%20generator&hl=en&prmd=iv&um=1&ie=UTF-8&source=og&sa=N&tab=wi&biw=1366&bih=667
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
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#4
07-03-2011, 11:08 AM

Presented BY:
J.S.VISWANATH


.pptx   flying wind mills and wind generators.pptx (Size: 515.56 KB / Downloads: 357)
FLYING WIND MILLS AND FLYING WIND GENERATOR
INTRODUCTION

• Mission: To convert the power in high altitude winds into clean energy for a better world.
• The energy in the high altitude winds is far more than enough to meet the world's energy needs, and means of capturing this energy are available through a little further development of technologies that do not require any fundamental scientific breakthroughs.
WIND ENERGY BASICS
• Wind Energy and Wind Power
Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and rotation of the earth. Wind flow patterns are modified by the earth's terrain, bodies of water, and vegetative cover. This wind flow, or motion energy, when "harvested" by modernwind turbines, can be used to generate electricity.
How Wind Power Is Generated
The terms "wind energy" or "wind power" describe the process by which the wind is used to generate mechanical power or electricity. Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity to power homes, businesses, schools, and the like.
WIND TURBINES
• Wind turbines, like aircraft propeller blades, turn in the moving air and power an electric generator that supplies an electric current. Simply stated, a wind turbine is the opposite of a fan. Instead of using electricity to make wind, like a fan, wind turbines use wind to make electricity. The wind turns the blades, which spin a shaft, which connects to a generator and makes electricity.
Wind Turbine Types
Modern wind turbines fall into two basic groups; the horizontal-axis variety, like the traditional farm windmills used for pumping water, and the vertical-axis design, like the eggbeater-style Darrieus model, named after its French inventor. Most large modern wind turbines are horizontal-axis turbines.
TURBINE COMPONENTS
Horizontal turbine components include:
a. blade or rotor, which converts the energy in the wind to rotational shaft energy;
b. a drive train, usually including a gearbox and a generator;
c. a tower that supports the rotor and drive train; and
d. other equipment, including controls, electrical cables, ground support equipment, and
interconnection equipment.
• Tether is the connecting media between the turbines up in the air to the grid on the surface
• Electrodynamics tethers are long conducting wires, which can operate on electromagnetic principles as generators, by converting their kinetic energy to electrical energy, or as motors, converting electrical energy to kinetic energy. Electric potential is generated across a conductive tether by its motion through the Earth's magnetic field
• The choice of the metal conductor to be used in an electrodynamics tether is determined by a variety of factors.
1. Primary factors usually include high electrical conductivity, and low density.
2. Secondary factors, depending on the application, include cost, strength, and melting point.
• An electrodynamic tether is attached to an object, the tether being oriented at an angle to the local vertical between the object and a planet with a magnetic field. When the tether cuts the planet's magnetic field, it generates a current, and thereby converts some of the orbiting body's kinetic energy to electrical energy. As a result of this process, an electrodynamic force acts on the tether and attached object, slowing their orbital motion.
• Functionally, electrons flow from the space plasma into the conductive tether, are passed through a resistive load in a control unit and are emitted into the space plasma by an electron emitter as free electrons. In principle, compact high-current tether power generators are possible and, with basic hardware, 10 to 25 kilowatts appears to be attainable.
• The flying generator’s for a typical flight configuration in a wind of velocity V. A single tether of length Lc is attached to the craft at a point A on the craft’s plane of symmetry. The aircraft’s center of mass is at C. The tether is assumed, herein for simplicity, to be mass-less and non-extendible.
• For low altitude flight, around 1500 ft (< 500 m), the assumption of a straight, mass-less tether is reasonable. However, for higher altitudes, the analysis has been extended to included tether mass and tether air-loads. Higher altitudes are achievable using an aluminium-Kevlar composite or an aluminium-Spectra composite for the
electro-mechanical tethering cable.
• If the generators capacity is above a minimum level , a System Impact Study is required to connect a new generator to the grid.
• FEG ,in single units of 20MW or more , can achieve about 80% availability with suitable siting at land or sea locations.
• FEG transmits power over lengths of between 4 and 8 km.
• Flying generator / tether voltages between 11kV and 25kV ac could be used on units of 30MW at the most extreme altitudes.
• Arrays of flying generators could move north or south to follow seasonal shifts in wind patterns or power demand.
• Tether arrangement contains three conductors-two could form the single-phase circuit , third could be the ground wire and control cabling function.
• Generator and tether performance depends on a good lightning storm detection system.
• The wind speed data from across the globe is recorded at heights from 263 feet to almost 40,000 feet over the last 30 years, and calculated which regions would generate the most power. According to the study, Tokyo, Seoul, Sydney and New York City all sit on a goldmine of stratospheric wind power.
• IN INDIA , During the summer months, Delhi and Mumbai could also benefit from sky high turbines. But unfortunately for India, the gusts die down in the fall and spring, reducing the energy density in the atmosphere.
• Lower electricity production cost.
• Bird and bat friendly.
• Low noise emissions.
• Operation over a wide range of wind speeds.
• Operation at high altitudes from 400 to 1,000 feet above ground, possible without towers.
• Mobility.
• Restricted airspace for airplanes to fly.
• Not suitable for highly populated areas, unless there are adequate safety measures provided.
• Seasonal variations in jet streams speed across the globe can create dull periods for electricity production by FEG.
It has been shown that flying electric generators can harness the powerful and persistent winds aloft to supply electricity for grid connection, for hydrogen production or for hydro-storage. Globally, upper atmospheric winds provide an enormous resource for this application. The environmental impacts at altitude are minimal with virtually no visual, or noise intrusion and no bird strikes. The proposed systems lead logically to rural/remote area installations in regions of restricted airspace. Full-scale facilities, using individual FEG units of rated power around 30 MW, could easily form wind-farms equivalent in output to regular coal, gas and nuclear facilities. These wind-farms would give capacity (generating) factors around three times greater than that from conventional wind-farms. The estimated bulk electricity cost for the power so produced is estimated to be of the order of $20/MWh. High altitude wind power is not science fiction. It depends on currently available technologies and engineering knowhow, building on decades of experience with wind turbine and gyroplane technologies. Harnessing high altitude wind energy, using a combination of essentially existing technologies, appears to be thoroughly practical and suggests that this energy source can play an important part in addressing the world's energy and global warming problems.
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#5
08-03-2012, 12:18 PM

to get information about the topic"FLYING ELECTRIC GENERATOR" full report ppt and related topic refer the link bellow

topicideashow-to-flying-windmills-or-flying-electric-generator-feg-technology

topicideashow-to-flying-windmills-or-flying-electric-generator-feg-technology?page=2

seminar and presentationproject and implimentationsshowthread.php?tid=6125&google_seo=VqBd+++++++++++++++++++++&pid=66517#pid66517
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#6
23-07-2012, 01:08 PM

Flying Windmills or Flying Electric Generator (FEG) technology

.pdf   Flying Windmills.pdf (Size: 530.94 KB / Downloads: 76)

ABSTRACT

High Altitude Wind Power uses flying electric generator (FEG) technology in the form of what have been more popularly called flying windmills, is a proposed renewable energy project and implimentation over rural or low-populated areas, to produce around 12,000 MW of electricity with only 600 well clustered rotorcraft kites that use only simple autogyro physics to generate far more kinetic energy than a nuclear plant can. According to Sky WindPower; the overuse of fossil fuels and the overabundance of radioactive waste from nuclear energy plants is taking our planet once again down a path of destruction, for something that is more expensive and far more dangerous in the long run. FEG technology is just cheaper, cleaner and can provide more energy than those environmentally unhealthy methods of the past, making it a desirable substitute/alternative. The secret to functioning High Altitude Wind Power is efficient tether technology that reaches 15,000 feet in the air, far higher than birds will fly, but creating restricted airspace for planes and other aircraft.

INTRODUCTION

Two major jet streams, the Sub-Tropical Jet and the Polar Front Jet exist in both Earth hemispheres. These enormous energy streams are formed by the combination of tropical region sunlight falling and Earth rotation. This wind resource is invariably available wherever the sun shines and the Earth rotates. These jet stream winds offer an energy benefit between one and two orders of magnitude greater than equalrotor-
area, ground mounted wind turbines operating in the lowest regions of the Earth’s boundary layer. In the USA,Caldeira and O’Doherty and Roberts have shown that average power densities of around 17 kW/m2 are available. In Australia, Atkinson et al show that 19 kW/m2 is achievable.These winds are available in northern India, China, Japan,Africa, the Mediterranean, and elsewhere.
Various systems have been examined to capture this energy, and these include tethered balloons, tethered fixed-winged craft, tether climbing and descending kites, and rotorcraft.

THE BEST SPOTS TO PLACE FEGs

Based on the ERA-15 reanalysis of the European Centre for Medium-Range Weather Forecasts, we calculated the seasonal-mean, climate-zone wind power density from December 1978 to February 1994 .Computed power densities in high altitude winds exceed a 10 kW/m2 seasonal average at the jet stream’s typical latitudes and altitudes. This is the highest power density for a large renewable energy resource anywhere on Earth. It exceeds the power densities of sunlight, near surface winds, ocean currents, hydropower, tides, geothermal, and other large-scale renewable resources. For comparison, Earth surface solar energy is typically about 0.24 kW/m2 , and photovoltaic cell conversion of energy into electricity has an efficiency several times less than that of wind power.

Electrodynamic tether

Tether is the connecting media between the turbines up in the air to the grid on the surface. Electrodynamic tethers are long conducting wires, such as the one deployed from the tether satellite, which can operate on electromagnetic principles as generators, by converting their kinetic energy to electrical energy, or as motors, converting electrical energy to kinetic energy. Electric potential is generated across a conductive tether by its motion through the Earth's magnetic field. The choice of the metal conductor to be used in an electrodynamic tether is determined by a variety of factors. Primary factors usually include high electrical conductivity, and low density. Secondary factors, depending on the application, include cost, strength, and melting point.
An electrodynamic tether is attached to an object, the tether being oriented at an angle to the local vertical between the object and a planet with a magnetic field. When the tether cuts the planet's magnetic field, it generates a current, and thereby converts some of the orbiting body's kinetic energy to electrical energy. As a result of this process, an electrodynamic force acts on the tether and attached object, slowing their orbital motion. The tether's far end can be left bare, making electrical contact with the ionosphere via the phantom loop. Functionally, electrons flow from the space plasma into the conductive tether, are passed through a resistive load in a control unit and are emitted into the space plasma by an electron emitter as free electrons. In principle, compact high-current tether power generators are possible and, with basic hardware, 10 to 25 kilowatts appears to be attainable.

FLYING GENERATORS AERODYNAMIC PERFORMANCE

The flying generator’s side view in Fig. 3 is for a typical flight configuration in a wind of velocity V. A single tether of length Lc is attached to the craft at a point A on the craft’s plane of symmetry. The aircraft’s center of mass is at C. The tether is assumed, herein for simplicity, to be mass-less and non-extendible.
For low altitude flight, around 1500 ft (< 500 m), the assumption of a straight, mass-less tether is reasonable. However, for higher altitudes, the analysis has been extended to included tether mass and tether air-loads. Higher altitudes are achievable using an aluminium-Kevlar composite or an aluminium-Spectra composite for the
electro-mechanical tethering cable.

ELECTRICAL SYSTEM DETAILS

Flying electric generators need to ascend and remain aloft for short periods on grid-sourced energy. In low-wind conditions, only a small proportion of output rating as grid sourced energy is required to raise or maintain the craft aloft. Voltages at the terminals of both the generator/motor and at the grid interface need to be kept within designed tolerances and/or be adjusted by timely voltage regulation.
In a national regulated electricity market, such as that found in Europe and elsewhere, a System Impact Study (SIS) is required to connect a new generator to the grid if the generator’s capacity is above a minimum level, e.g. 5 MW. Even non-dispatchable “embedded generators“ require Grid System Impact Assessments. The generator proponent usually pays for the generator-to-grid network connection. Land and sea locations for generation from renewable energy sources, especially wind energy, are often remote from the existing grid, hence, connection costs are often 50% of the total investment for new generating capacity. Also where a renewable energy source generator is not n-1 reliable for availability, the Network Connection Contracts usually include the costs of back-up supply contingencies. These relate to
network charges when the renewable generator is not supplying.
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#7
09-08-2012, 02:46 PM

is there any journals published this topic
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06-05-2013, 03:00 PM

Flying Windmills or Flying Electric Generator (FEG) technology


.doc   Flying Windmills.doc (Size: 1.56 MB / Downloads: 26)

ABSTRACT

High Altitude Wind Power uses flying electric generator (FEG) technology in the form of what have been more popularly called flying windmills, is a proposed renewable energy project and implimentation over rural or low-populated areas, to produce around 12,000 MW of electricity with only 600 well clustered rotorcraft kites that use only simple autogyro physics to generate far more kinetic energy than a nuclear plant can.
According to Sky WindPower; the overuse of fossil fuels and the overabundance of radioactive waste from nuclear energy plants is taking our planet once again down a path of destruction, for something that is more expensive and far more dangerous in the long run. FEG technology is just cheaper, cleaner and can provide more energy than those environmentally unhealthy methods of the past, making it a desirable substitute/alternative.
The secret to functioning High Altitude Wind Power is efficient tether technology that reaches 15,000 feet in the air, far higher than birds will fly, but creating restricted airspace for pes and other aircraft.
The same materials used in the tethers that hold these balloons in place can also hold flying windmills in place; and with energy cable technology getting ever lighter and stronger .Flying windmills appear to be 90 percent more energy efficient in wind tunnel tests than their land-based counterparts

INTRODUCTION

Two major jet streams, the Sub-Tropical Jet and the Polar Front Jet exist in both Earth hemispheres. These enormous energy streams are formed by the combination of tropical region sunlight falling and Earth rotation. This wind resource is invariably available wherever the sun shines and the Earth rotates. These jet stream winds offer an energy benefit between one and two orders of magnitude greater than equalrotor-
area, ground mounted wind turbines operating in the lowest regions of the Earth’s boundary layer. In the USA,Caldeira and O’Doherty and Roberts have shown that average power densities of around 17 kW/m2 are available. In Australia, Atkinson et al show that 19 kW/m2 is achievable.These winds are available in northern India, China, Japan,Africa, the Mediterranean, and elsewhere.
Various systems have been examined to capture this energy, and these include tethered balloons, tethered fixed-winged craft, tether climbing and descending kites, and rotorcraft.
Our preferred option is a tethered rotorcraft, a variant of the gyroplane, where conventional rotors generate power and simultaneously produce sufficient lift to keep the system aloft. This arrangement, using a twin-rotor configuration, has been
described and flown at low altitude by Roberts and Blackler (Fig. 1). More recent developments have produced a quadruple rotor arrangement (Fig. 2).

THE BEST SPOTS TO PLACE FEGs

Based on the ERA-15 reanalysis of the European Centre for Medium-Range Weather Forecasts, we calculated the seasonal-mean, climate-zone wind power density from December 1978 to February 1994 .Computed power densities in high altitude winds exceed a 10 kW/m2 seasonal average at the jet stream’s typical latitudes and altitudes. This is the highest power density for a large renewable energy resource anywhere on Earth. It exceeds the power densities of sunlight, near surface winds, ocean currents, hydropower, tides, geothermal, and other large-scale renewable resources. For comparison, Earth surface solar energy is typically about 0.24 kW/m2 , and photovoltaic cell conversion of energy into electricity has an efficiency several times less than that of wind power.
High power densities would be uninteresting if only a small amount of total power were available. However, wind power is roughly 100 times the power used by all human civilization. Total power dissipated in winds is about 15 times 10 W. Total
Human thermal power consumption is about 13 times 10 W. Removing 1% of high altitude winds’ available energy is not expected to have adverse environmental consequences.
High altitude winds are a very attractive potential source of power, because this vast energy is high density and persistent. Furthermore, high altitude winds are typically just a few kilometres away from energy users. No other energy source combines potential resource size, density, and proximity so attractively.

DESCRIPTION OF THE PREFERRED ENERGY CONVERSION
SYSTEM


The currently proposed new tethered craft consists of four identical rotors mounted in an airframe which flies in the powerful and persistent winds. The tether’s insulated aluminum conductors bring power to ground, and are wound with strong Kevlar-family cords. The conductor weight is a critical compromise between power loss and heat generation. We propose employing aluminum conductors with tether transmission voltages of 15 kV and higher, because they are light weight for the energy transmitted. To minimize total per kWh system cost and reduce tether costs, the design allows higher per meter losses and higher conductor heating than does
traditional utility power transmission. Depending on flight altitude, electrical losses between the tether and the converted power’s insertion into the commercial grid are expected to be as much as 20%, and are included in energy cost estimates
described in Section IX.
The flying electric generator units (FEGs) envisioned for commercial power production have a rated capacity in the 3 to 30 MW range. Generators arrays are contemplated for wind farms in airspace restricted from commercial and private
aircraft use. To supply all U.S. energy needs, airspace for power generation is calculated to restrict far less airspace than is already restricted from civil aviation for other purposes. While similar in concept to current wind farms, in most cases
flying generator arrays may be located much closer to demand load centers.
When operating as an electrical power source, four or more rotors are inclined at an adjustable, controllable angle to the on-coming wind. In general the rotors have their open faces at an angle of up to 50to this wind. This disk incidence is reduced in various wind conditions to hold the power output at the rated value without exceeding the design tether load.Rotorcraft can also function as an elementary powered
helicopter as described in section II.

Electrodynamic tether

Tether is the connecting media between the turbines up in the air to the grid on the surface. Electrodynamic tethers are long conducting wires, such as the one deployed from the tether satellite, which can operate on electromagnetic principles as generators, by converting their kinetic energy to electrical energy, or as motors, converting electrical energy to kinetic energy. Electric potential is generated across a conductive tether by its motion through the Earth's magnetic field. The choice of the metal conductor to be used in an electrodynamic tether is determined by a variety of factors. Primary factors usually include high electrical conductivity, and low density. Secondary factors, depending on the application, include cost, strength, and melting point.
An electrodynamic tether is attached to an object, the tether being oriented at an angle to the local vertical between the object and a planet with a magnetic field. When the tether cuts the planet's magnetic field, it generates a current, and thereby converts some of the orbiting body's kinetic energy to electrical energy. As a result of this process, an electrodynamic force acts on the tether and attached object, slowing their orbital motion. The tether's far end can be left bare, making electrical contact with the ionosphere via the phantom loop. Functionally, electrons flow from the space plasma into the conductive tether, are passed through a resistive load in a control unit and are emitted into the space plasma by an electron emitter as free electrons. In principle, compact high-current tether power generators are possible and, with basic hardware, 10 to 25 kilowatts appears to be attainable.

ELECTRICAL SYSTEM DETAILS

Flying electric generators need to ascend and remain aloft for short periods on grid-sourced energy. In low-wind conditions, only a small proportion of output rating as grid sourced energy is required to raise or maintain the craft aloft. Voltages at the terminals of both the generator/motor and at the grid interface need to be kept within designed tolerances and/or be adjusted by timely voltage regulation.
In a national regulated electricity market, such as that found in Europe and elsewhere, a System Impact Study (SIS) is required to connect a new generator to the grid if the generator’s capacity is above a minimum level, e.g. 5 MW. Even non-dispatchable “embedded generators“ require Grid System Impact Assessments. The generator proponent usually pays for the generator-to-grid network connection. Land and sea locations for generation from renewable energy sources, especially wind energy, are often remote from the existing grid, hence, connection costs are often 50% of the total investment for new generating capacity. Also where a renewable energy source generator is not n-1 reliable for availability, the Network Connection Contracts usually include the costs of back-up supply contingencies. These relate to
network charges when the renewable generator is not supplying.
Flying electric generators at altitude will have a relatively high availability, around 80%. Reliability and peak premium sales could be enhanced by a link to a pumped storage facility for off-peak filling/storage and peak-release energy sales and
delivery. Energy could be stored as hydrogen gas produced from electrolysis, or as water pumped-back and re-released for hydroelectric generation.
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