The principle of wind power generation
The principle of wind power is the use of wind-driven windmill blades rotate, and then through the growth machine will increase the speed of rotation, to encourage generators. According to the current windmill technology, is about three meters per second, the speed of the breeze (the breeze of the level), they can begin to generate electricity.
Wind power is in the world to form a craze for wind power without fuel problems, it does not produce radiation or air pollution.
Wind power generation in Finland, Denmark and other countries are popular; the western region of China is also strongly advocated. Small-scale wind power generation system very efficient, but it is not only composed by a generator head, but a certain scientific and technological content of the small systems: wind turbine + Charger + digital inverter. Wind turbines by the nose, swivel, tail, leaf form. Each part is very important for all of some functions as follows: leaves used to receive through the nose into the wind power; tail so that leaves always opposite to the direction of the wind to get the most out of the wind energy; swivel head allows the flexibility to rotate in order to achieve tail reorientation functions; nose of the rotor is a permanent body, the stator windings cutting magnetic field lines to generate electricity.
Fluctuating wind turbine due to wind, so its output is 13 ~ 25V AC changes, subject to charger rectifier, and then build the battery for charging, so that electricity generated by wind turbines into chemical energy. Then to protect the circuit inverter power supply, the battery inside the AC 220V chemical energy into electricity in order to guarantee stability use.
Usually people think of wind power generation wind turbine power solely by the decision, always want to buy bigger wind turbine, which is not correct. The current wind turbine is to provide battery charging, the energy stored by the battery up, people end-use electrical power for the size and battery size is more closely related. Power depends on the size of the more important the size of the wind, while the power is not only the size of the nose. On the mainland, a small wind turbine would be more appropriate than large. Because it is more likely to be a small amount of wind driven power generation, continuous small wind, strong wind better than 1:00 a larger supply of energy. When no wind, when the people can also be caused by normal use of wind power, that is a 200W wind turbine can also be large battery and inverter with the use, access to 500W or even 1000W or even more power out of.
The use of wind generators, wind energy is continuously put into our family to use the standard electricity, its level of savings is obvious, a family only 20 yuan a year of electricity cost of battery fluid. And now the wind turbine performance than a few years ago a significant improvement, previously used only in a few remote areas, wind generators then a 15W light bulb directly to electricity, one out of a dark and will keep the damage to bulbs. And now because of technological advances, the use of advanced chargers, inverters, wind power into a certain scientific and technological content of the small systems, and can under certain conditions, instead of the normal electricity. Mountain can take this system to be a perennial of the street at no cost; highway signs can be used it to do the night lights; mountain children can study up on it under fluorescent; urban high-rise rooftop wind motors can also be used, which not only save but also a real green power. Home wind generators, not only can prevent blackouts, but also increase the interest in life. In the tourism area, border, schools, troops and even behind the mountains, the wind generators are becoming the people’s purchasing hot. Radio enthusiasts use their own technology in wind power generation for the mountain people services to enable people to watch television and lighting, electricity and urban synchronization, but also to make himself rich labor.
Wind power as a clean, renewable energy, more and more countries around the world attention. Yun amount of its huge, global wind energy is about 2.74 × 109MW, of which wind energy can be used for the 2 × 107MW, than the Earth can be development and utilization of water volume 10 times bigger. China’s wind energy reserves are large, wide distribution, only land-based wind energy reserve is about 253 million kilowatts.
With the global economic development, wind energy market has developed rapidly. The past five years, the world wind energy market with an annual growth rate of 40%. In 1997 the world is only 7,000 megawatts of wind power installed capacity in 2007, has 90000 megawatts, by 2010 this figure will be 16 megawatts. The next 20-25 years, the world’s wind energy market will increase 25% annually. With the technological advances and development of environmental protection, wind power generation in the business will be fully competitive with coal-fired generation.
“Tenth Five-Year” period, China’s wind power grid to be developed rapidly. As of June 2006 the total national wind power installed capacity of 1.26 million kilowatts, ranking the world’s first 10-bit, Asia’s third-place, has joined Europe, the United States and India after the development of wind power, one of the major markets.
In 2006, China’s total wind power installed capacity has reached 2.6 million kilowatts, when additional installed capacity of 1.33 million kilowatts, an increase of 166%. Estimated the exception of Tibet, Yunnan, Xinjiang and other five provinces, domestic remaining 26 provinces there are 3.2 billion kilowatts of wind energy resources capacity available for exploitation. Among them, Inner Mongolia Autonomous Region for the development of wind energy resources accounted for half of the 26 provinces, reaching 1.46 billion kilowatts.
Expect that the future demand for wind turbine will continue rapid growth expected in 2008 and 2010, respectively, up to 3.61 million kilowatts, 5.05 million kilowatts and 657 kilowatts, respectively, year on year increase of 50%, 40% and 30%, three-year compound annual growth rate of 40%.
Wind power development to the current stage, its cost is the formation and coal, hydropower competitive advantage. Advantages of wind power: the ability for each doubling of the cost of the 15% decline in recent years, the world’s wind power growth has been maintained at over 30%. As China’s domestic production of wind power installed capacity and generation of large-scale, wind power costs are expected to lower and lower. Therefore, wind power started to become more and more investors by golden land.
China Investment Consultation Network “issued in 2008 China’s wind power industry analysis and Investment Consulting report” a total of 15 chapters.specifically describes the development of wind power equipment at home and abroad. Subsequently, the report of the wind power industry has done a regional development analysis, focusing on status of business operations analysis, cost-price analysis, the concession project analysis, investment analysis, and analysis of future prospects and finally set out in detail and resolved with the wind power industry is closely related to the policy of and regulations. If you wish on the wind energy industry has a system to understand or want to invest in wind power, this report is an important tool for your indispensable.
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