Wind Energy
Wind power is the conversion of wind energy into a useful form of energy, such as using wind turbines to make electricity, wind mills for mechanical power, wind pumps for pumping water or drainage, or sails to propel ships.
At the end of 2009, worldwide nameplate capacity of wind-powered generators was 157.9 gigawatts (GW), which is about 1.5% of worldwide electricity usage; and is growing rapidly, having doubled in the three years between 2005 and 2008. Several countries have achieved relatively high levels of wind power penetration (with large governmental subsidies), such as 19% of stationary electricity production in Denmark, 13% in Spain and Portugal, and 7% in Germany and the Republic of Ireland in 2008. As of May 2009, eighty countries around the world are using wind power on a commercial basis.
Large-scale wind farms are connected to the electric power transmission network; smaller facilities are used to provide electricity to isolated locations. Utility companies increasingly buy back surplus electricity produced by small domestic turbines. Wind energy as a power source is attractive as an alternative to fossil fuels, because it is plentiful, renewable, widely distributed, clean, and produces no greenhouse gas emissions. However, the construction of wind farms is not universally welcomed because of their visual impact and other effects on the environment.
Wind power is non-dispatchable, meaning that for economic operation, all of the available output must be taken when it is available. Other resources, such as hydropower, and standard load management techniques must be used to match supply with demand. The intermittency of wind seldom creates problems when using wind power to supply a low proportion of total demand.
Wind Technology
The Earth is unevenly heated by the sun, such that the poles receive less energy from the sun than the equator; along with this, dry land heats up (and cools down) more quickly than the seas do. The differential heating drives a global atmospheric convection system reaching from the Earth's surface to the stratosphere which acts as a virtual ceiling. Most of the energy stored in these wind movements can be found at high altitudes where continuous wind speeds of over 160 km/h (99 mph) occur. Eventually, the wind energy is converted through friction into diffuse heat throughout the Earth's surface and the atmosphere.
The total amount of economically extractable power available from the wind is considerably more than present human power use from all sources.An estimated 72 terawatt (TW) of wind power on the Earth potentially can be commercially viable, compared to about 15 TW average global power consumption from all sources in 2005. Not all the energy of the wind flowing past a given point can be recovered.
Distribution of wind speed
The strength of wind varies, and an average value for a given location does not alone indicate the amount of energy a wind turbine could produce there. To assess the frequency of wind speeds at a particular location, a probability distribution function is often fit to the observed data. Different locations will have different wind speed distributions. The Weibull model closely mirrors the actual distribution of hourly wind speeds at many locations. The Weibull factor is often close to 2 and therefore a Rayleigh distribution can be used as a less accurate, but simpler model.
Because so much power is generated by higher wind speed, much of the energy comes in short bursts. The 2002 Lee Ranch sample is telling; half of the energy available arrived in just 15% of the operating time. The consequence is that wind energy from a particular turbine or wind farm does not have as consistent an output as fuel-fired power plants; utilities that use wind power provide power from starting existing generation for times when the wind is weak thus wind power is primarily a fuel saver rather than a capacity saver. Making wind power more consistent requires that various existing technologies and methods be extended, in particular the use of stronger inter-regional transmission lines to link widely distributed wind farms. Problems of variability are addressed by grid energy storage, batteries, pumped-storage hydroelectricity and energy demand management.
Electricity generation
In a wind farm, individual turbines are interconnected with a medium voltage (often 34.5 kV), power collection system and communications network. At a substation, this medium-voltage electrical current is increased in voltage with a transformer for connection to the high voltage electric power transmission system.
The surplus power produced by domestic microgenerators can, in some jurisdictions, be fed into the network and sold to the utility company, producing a retail credit for the microgenerators' owners to offset their energy costs.
Products
Aero Generators:
We are capable to supply and install standalone/roof mounted aero generators of capacity between 400Watts to 50Kilo Watts. We are confident to set up micro wind farms up to 1000 kilowatts.
We are acquired the capacity to install High efficiency Marine wind generators, which can be installed in Sail/ House boats, Seashore &Islands.
Features
- Whisper quiet
- Neo magnets for long life .
- High output for low winds.
- Unique angle governing.
- Sustained output in high winds.
- Ruggedized body frame.
- Resistance to Rust and Corrosion.
- Lowest cost per watt.
Our products are specially designed and can be implemented in electrification of :
Individual Residential houses, Layouts, Hospitals, Educational Institutions, Apartments, Shopping complex, Resorts, Petrol-Pumps, Factories, Farm houses, Estates, Villages, Parking lots, Gardens, Parks, Sail/House Boats, Temples, Mosques,Churches and can be used in Rural Electrification Programs.
The stand alone wind electric power generator system consists of an aero generator, wind charge controller, long life low maintenance tubular batteries, inverter/ups system, suitable hard-ware, inter connecting cables etc .
Sep 30, 2011
New Order for 5 Kilo Watt from National Enggineering College.
New order from National Engineering College,Tirunelvely for 5.1 Kilowat WInd Turbine.
Sep 22, 2011
Repeat Order From Chandy Group of Educational Institutions,Tutucorinfor 30 Kilo Watt Wind Solar Hybrid System
The order is based on the superior performance of the 1kW wind solar hybrid system, which we have installed last year. The current system comprises 20 Kilowatt Wind and 10 Kilowatt Solar