Floating Windmill

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A floating wind turbine system with a tower structure that includes at least one stability arm extending there from and that is anchored to the sea floor with a rotatable position retention device that facilitates deep water installations. Variable buoyancy for the wind turbine system is provided by buoyancy chambers that are integral to the tower itself as well as the stability arm. Pumps are included for adjusting the buoyancy as an aid in system transport, installation, repair and removal. The wind turbine rotor is located downwind of the tower structure to allow the wind turbine to follow the wind direction without an active yaw drive system. The support tower and stability arm structure is designed to balance tension in the tether with buoyancy, gravity and wind forces in such a way that the top of the support tower leans downwind, providing a large clearance between the support tower and the rotor blade tips. This large clearance facilitates the use of articulated rotor hubs to reduced damaging structural dynamic loads. Major components of the turbine can be assembled at the shore and transported to an offshore installation site.

INTRODUCTION

A floating wind turbine is a wind turbine mounted on a floating structure that allows the turbine to generate electricity in water depths where bottom-mounted towers are not feasible. The wind can be stronger and steadier over water due to the absence of topographic features that may disrupt wind flow. The electricity generated is sent to shore through undersea cables. The initial capital cost of floating turbines is competitive with bottom-mounted, near-shore wind turbines while the rate of energy generation is higher out in the sea as the wind flow is often more steady and unobstructed by terrain features. The relocation of wind farms into the sea can reduce visual pollution if the windmills are sited more than 12 miles (19 km) offshore, provide better accommodation of fishing and shipping lanes, and allow siting near heavily developed coastal cities.

Floating wind parks are wind farms that site several floating wind turbines closely together to take advantage of common infrastructure such as power transmission facilities.

NEED FOR FLOATING WINDMILLS

A few hundred meters offshore, winds are twice as strong as on land in much of the world. Offshore wind energy has huge potential, and floating wind turbines is a promising technology. Such turbines are now being developed. They are meant to be used out at sea in deep waters, and they do not need to be permanently moored to the ocean bed. DEEP SEA. Criteria for location of an offshore wind farm is excellent wind conditions and suitable water depth. The wind farm must be situated near a strong onshore power grid and near harbours and shipyards.
_ Energy is a major factor in today’s society
_ Alternative fuel and alternative energy resources are in great demand
_ Most everyone in the world is looking for more energyefficient ways to live
_ Hybrid vehicles and other fuel-efficient technology is arising around the world
_ The world has to change, this emergency that we are experiencing today should have been taken care of long before now.
_ Now we have no choice but to develop new technology in very little time

ADVANTAGES & DISADVANTAGES OF WINDMILLS

Advantages:
Compared to other energy sources,
windmills are very kind to the
enviroment. Compared to power stations
driven by coal they will save the
enviroment for:
• Carbon dioxide (CO2) 850,0g
• Sulphur dioxide (SO2) 2,9g
• Nitrogen dioxide (NO2) 2,6g
• Dust 0,1g
• Cinders, and flying ashes 55,1g

The brand new windmills are today so competitive on good places, that the use of windmillpower is one of the cheapest methods to reduce the emission of CO2 from the production of electrisity.

Windmills have no form of emissions of gases and other harmful substances. The wind which tries to press the blade speed a little longer up causes the generator to start producing power on the net. When the speed of the wind has reached windpower at 13-15 m/s the mill grants on its maximum at 500 kw for a 500 kw mill.

Floating Windmill Seminar Reports

Disadvantages:
Windmills are tall and they stand on places were the terrain is very open and free. Therefore there is also free outlook to the windmills. If the windspeed has reached its maximum the mill is forced to reduce speed to not hurt the mills' machinery. It is a disadvantage that the windmils don't have an engine with a greater capacity. The technology we use on windmills is very valuable and advanced, therefore the government hesitates to exploit windpower. As shown on the drawing below , you can see that this is advanced technology

CONCLUSION
_ Optimized Spar Buoy and TLP Wind Turbine Floaters
_ Low Responses – Use of Onshore Wind Turbines
_ Hybrid Offshore Wind & Wave Farms
_ Optimal Control to Enhance Wind and Wave Power Output
_ Design of Offshore Electric Grids
_ Attractive Economic Attributes
_ Project Finance for Utility Scale Offshore Wind & Wave Farms

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