20-07-2012, 01:44 PM
FLYING ELECTRIC GENERATOR
FLYING ELECTRIC GENERATOR.ppt (Size: 3.08 MB / Downloads: 177)
Flying Electric Generators (FEG)
Several types were investigated: tethered balloons, tethered fixed-winged craft, tether raising and lowering kites, and rotorcraft. Most of the data herein is based off of simulations and several prototypes
Kite plants can be located much closer to demand sites, and can be constructed in places where airspace is already restricted.
Importance of the Tether
Kite’s sole connection to the ground, electricity storage device, without the tether, no electricity would be produced
Non-negligible weight
Power losses through imperfect conductive materials, sigma denotes conductivity and is based on the properties of the material used
Demonstrates the biggest obstacle to implementing wind power on large scales. Altitude affects the transmission efficiency of the tethers. Losses can be as much as 20%.
Rotorkite
What it is: Four rotors that generate power and keep the craft aloft are attached to a sturdy frame. Power is then transferred to the surface via a long conducting cable which doubles as an anchor to the ground, power transporter
How it works: The speed of the rotors produces enough buoyant lift to keep the craft aloft and keeps steady from paired counter-rotation. The rotors are connected to gearboxes that drive four motor/generator devices, which are in turn connected to the tether where the power is transported to the surface.
Cost of production
A 3.4MW FEG is estimated to cost
$2.26 million dollars – this includes ground systems and production profits.
Total initial capital cost for a 100MW array of FEGs: $71.2 million dollars
this includes site preparation, facilities, equipment, spare parts, and construction.
CONCLUSION
FEG uses high altitude wind energy and produces a high capacity of output power and thus this energy source can play an important part in addressing the world’s energy and global warming problems.