Hummer H3.8-2000w wind energy generators

Application of Hummer 2000W wind energy generator

It can drive air-condition (2 horsepower), pump or other electrical appliances (≤2KW).

Well used in:

Housing

Telecommunication Station

TV Transfer Station

Monitoring Station (military, hydrology, observatory)

Water-pumping Station

the wind generator with the following features :

Stable in output&practice

Auto-running the complete system

High-end technolgies&refined material

Excellent in generation

Hummer 3.8-2000w wind generators Main technical data

Rated power(W)	2000
Maximum output powerW	3200
Charging voltage (V)	DC 120
Blade quantity	3
Rotor blade material	GRP
Rotor blade diameterm	3.8
Start-up wind speed (m/s)	3.0
Rated wind speed (m/s)	9.0
Rated rotating rate (r/min)	450
Wind energy utilizing ratio (Cp)	0.45
Generator output	Single-phase frequency conversion AC
Rated charging current (A)	15
The maximum charging current (in a short time )(A)	28
Output AC frequency (Hz)	0~370
Generator efficiency	>0.8
Tower diameter(mm)	114*2000*5 (5pcs)
Tower height(m)	10
The weight of generator(kg)	25
Battery 12V 150Ah/200Ah	10pcs

China Suggests Capping Wind Power On-grid Tariffs

China should cap wind power on-grid tariffs in order to bring tariffs set by local governments into line with those set through the national public bidding system, according to a report recently released that was compiled by the National Development and Reform Commission's Energy Bureau.

While the report did not propose any specific price caps, the adoption of such a system would serve as a blow to foreign developers in China's wind energy market who have relied on favorable local on-grid tariffs for small-scale wind power projects in order to generate acceptable profits

Wind generators projects with over 50 megawatts of capacity need to go through a public bidding process, organized by the NDRC, in which low power tariffs are the primary criterion for winning. Tariffs for projects awarded by local governments tend to be RMB 0.1 ($0.013) per kilowatt hour higher than those awarded through the central government's bidding system.

Beijing aims to drive down the price of wind generated power in order to encourage its use, which it believes can be achieved through such a competition bidding system as well as the localization of wind power equipment production.

However, such an approach has benefited deep-pocketed state-owned power companies that have emission-reduction targets to fulfill. Such companies tend to submit uneconomic bids in order to win the project, and then leave the wind farm either undeveloped or equipped with low-quality equipment in order to cut costs.

By going through local governments though, foreign companies can secure better power on-grid tariff rates as well as more control over key aspects of their projects, such as the location of the wind farm. Such important issues can sometimes make or break a deal, Alberto Mendez, the China general manager of Spain's Gamesa, one of the world's largest wind turbine makers and wind farm developers, said at an industry forum held in May.

At present, wind farm projects planned or awarded via tenders by the central government have a combined power generation capacity of 2,000 MW, while those handled by local governments have a combined capacity of almost 8,000 MW.
Industry insiders have long called for a premium rate for wind power that would be set around RMB 0.25 ($0.03) per kWh higher than power from coal-fired plants in order to create further incentives to attract investors.
The report also said that China should adjust its wind turbine development targets at an appropriate time as, if current trends continue, the country is likely to achieve a wind power capacity triple that of its current 2020 target of 30,000 MW.
China could even achieve 120,000 MW of installed wind power capacity by 2020 if the country's policy environment is improved, according to the report.

The NDRC currently expects over 2,000 MW of wind power generating capacity to go into operation this year, adding to the 2,600 MW of wind generators generating capacity that was installed last year.

Of the total capacity added last year, Goldwind from northwestern China's Xinjiang Autonomous Region accounted for 33.2 percent of the addition, followed by Denmark's Vestas, one of the world's largest producers of wind turbines, with 23.5 percent. Gamesa accounted for 15.8 percent of newly installed capacity, while U.S.-based GE accounted for 12.6 percent, according to the China Wind Energy Association.
From:Hummer Blog

Hummingbird cost-effective small wind turbines

Small wind turbine is a long-term benefit from an investment of energy products, which generally 10-15 years of life, or even longer, and in a good wind resource areas, 3-year capacity, to recover the full investment costs. After the recovery period, the remaining time for generating all the proceeds, the proceeds of up to 2 times more than investment, so the investment of the product is very cost-effective!

generation small wind turbine costs per unit of electricity (KWH) of about 0.3-0.6 million, which can be seen this value than that of the Municipal Electric electricity is also low! Electricity than the island, much lower! Lower than the oil-generated electricity more!
For example: fuel general generators (medium) of the direct fuel costs about 1.05 yuan / kWh, plus the loss of units, conversion efficiency, small-load loss and so on, electricity costs at least 1.60-2.00 yuan / degree.
Small-scale power generation units of generator fuel costs even higher, and every day with a reduction of resources is bound to a variety of fuel prices rising every day. This shows that the use of small wind turbine is the most practical, most economical and the most cost-effective and best solution to save money. The small wind turbine
the main technical features (see website www.allwindenergy.com)
; hummingbird small wind turbine has the following five characteristics of the three patents:
First, start a gentle breeze, and the other is ultra-light structure (patent pending), and the third is high-performance wide-wind speed (patent pending), the four smart limit pressure, current limiting, speed, V is the protection against strong winds Design (patent pending).
Fully automated control of wide speed wind turbine technology made. (Patent)
technology breeze to start. (Advanced technology)
no need for fully automated control staff. (Advanced technology)
resistant 40 meters / second (equivalent to 13) to protect the design of strong winds. (Patent)
economic, energy-saving and practical as long as more than 15 years of life design.

This year China will become the world's largest producer of wind turbines

Last year, the Global Wind Energy Council (GlobalWindEnergyCouncil / GWEC) Secretary-General SteveSawyer said that in 2009 China will become the world's largest producer of wind turbines, which will rapidly developing field of renewable energy brought new changes. According to the agency's data, although in 2007 the global wind power accounted for only 1% of the electricity supply, but the rapid development of wind power by 2020 will meet 12% of world electricity demand, and this will go a long way to control global warming benefits.

To deal with global climate change, reduce greenhouse gas emissions, renewable energy sector has attracted more and more and more investment, especially wind power, which provides energy than solar power and bio-energy and other renewable sources of energy to many. According to Sawyer introduction to the end of 2009, China's wind power capacity from the current 400 million to about瓦提high 10 million kilowatts, is the world market of more than half of capacity. 2007 World Added 1700-1900 wind generation capacity 10,000 kilowatts, with a total generating capacity of the fan more than 90 million kilowatts by 2008, 10000w wind generators global fan power generation capacity will be more than 100 million kilowatts.

According to Sawyer said the two Chinese fan wind turbine manufacturer and Huarui Jinfeng have been made in 2009 and 2010 large-scale export scheme, there is no Chinese export fans, but once the Government to promote exports will be the rapid development of the members of this Council (more than 50 countries, more than 1,500 enterprises) on the Chinese fan impact on the world market should be prepared.

At present, the world's largest fan manufacturers are Denmark's Vestas, the other more important producers are Spain's Gamesa, General Electric of the United States, India's Suzlon and Germany's Enercon

150KW wind turbine aircraft braking systems

Xinjiang Wind Energy Company Dabancheng existing wind farm and wind turbine Nets 14 Units, 13 Units equipped with hydraulic braking systems, by running over the past year, we found that 60% of the wind turbine from the hydraulic system failure, but at operation as long as a good grasp of maintenance work can be done on prevention, while better safeguarding Ways With even a failure can be found as soon as possible and timely treatment and to exclude, so greatly reduces the wind turbine downtime, improve a wind turbine operating efficiency. The following wind turbine hydraulic braking systems and maintenance of the structure of the principle methods of introduction are as follows:

First, the braking body

150KW wind turbine brake body mainly by the hydraulic system, disc brakes, damping plate when the tip is composed of three parts

International Renewable Energy Agency set up in Bonn, Germany

International Renewable wind Energy Agency January 26 to set up in Bonn, Germany, the agency aimed at promoting renewable energy in the global sustainable development.

German Environment Minister Sigmar Gabriel at the International Renewable Energy Agency to set up the ceremony, said that renewable energy has enormous potential, but we need to give more support to achieve their global breakthrough. International Renewable Energy Agency to set up renewable energy will become the "new spokesperson" greatly facilitate its development throughout the world.



International Renewable wind Energy Agency will become and the International Energy Agency and the International Atomic Energy Agency's international energy organizations tied. It will provide recommendations developed and developing countries, helping them to reduce dependence on fossil fuels and the promotion of solar, wind, hydropower and geothermal renewable wind energy development. At the same time, the agency will also actively promote wind generators renewable energy technologies to the relevant resource-rich developing countries.



German Foreign Ministry on behalf of CMG, wind generators OBESearle said that the development of renewable energy technologies is not only beneficial to the environment, but also create new economic opportunities, as well as developed countries to promote partnerships with developing countries, "Germany, as in the field leading his country to be highly beneficial. "



Take part in the opening ceremony of the Thailand Department of Energy's efforts rath satisfied Cheung Wong Kung said: "At present, Thailand encountered in the development of solar energy on a number of difficulties, we required the adoption of International Renewable Energy Agency to obtain the relevant technology."



According to reports, the establishment of International Renewable wind Energy Agency, the proposal was first introduced by Germany, Spain, Denmark and other countries put forward, and last year in Madrid, Spain in October reached a preliminary framework agreement. The inaugural meeting of a total of more than 100 countries were represented, including Germany, France, Netherlands and other country is expected to more than 60 pm on the same day the signing of the Treaty on the establishment of the institution, but the United States, Britain and other countries to sign the treaty is unlikely

Hummer 5kw On-grid inverter controller

After 6 month's test, the new 5kw on-grid inverter has been put into market. In the following introduced several features of the new on-grid inverter controller

Control System

1. The power efficiency has been highly improved by using IGBT.

2.With the automatic program optimization of MPPT the generator capacity is highly improved.

3. LCD indicates kinds of information simultaneously.

4. Real-time work curve can be saw from the PC interface.

5.Several optional communication interface includes power line carrier, RS485, wireless data transmission.

6. Comprehensive protection function with highly reliability

7. Wide AC voltage range

8. Freely set working curve chart

9. Simple, reliable and special plug connection

If any questions, please contact us.wind generators wind turbine

CE of hummer grid-tied inverter

After several months testing. Hummer grid-tied inverter has acquired the CE certificate.

The CE certificate number is LC090109-60-CE and LC090109-59-CE.

From:wind turbine manufacturer

Wind and solar energy utilization and development

Wind turbine and solar energy utilization and development have been three thousand years of history, is an old and the young science, and practical and living close to science, renewable and able to protect the environment science, and now sustainable The development of science, a multi-year investment to benefit from the project. Among the many new areas of energy, wind power and solar energy development and utilization of the first to be affected by giving priority to the development of present-day international is a major hot spots, as photovoltaic and wind power use, not exploitation, do not have transportation, do not have to discharge waste, the environment has not Pollution technology, to protect our planet for the benefit of future generations of long-term project.wind turbine wind generators manufacturer


Wind power and solar power generation from production to deal with the whole process of recovery do not have any pollution, it can increase the supply of electricity and will reduce environmental pollution caused by fuel, so as to protect the Earth's ecological environment is a real green Energy. In 2000, for example, in China's total wind power for the 7.01GW, in place of thermal power can save 278,800 tons of standard coal, reducing SO2 emissions MSO2 to 5668.5 tons, reducing CO2 emissions MCO2 to 718,653 tons and reduce NOX emissions to MNOX 8986 tons, to reduce airborne dust emission MTSP to 251 tons, 1,280,000,000 tons of water-saving. But also because of its reduced air pollution brought about by the indirect benefits are even more enormous.
from:http://www.allwindenergy.com/hummer/post/wind-and-solar-enenrgy.htm

Why small hummingbird fan resistant to strong winds

Hummingbird wind power generators, light weight, small size, the tail wind turbines under a special light and Weiduo small. 300-watt conventional wind turbine end of a long rod, Weiduo large (as big motors, heavy), wind generators and Wei Duo Mei-under total weight of almost 10 kilograms, while the hummingbird 500-watt wind turbine tail-under Weiduo + Only the weight of 1.7 kg. Do not light a small, non-use of building materials in general, the bar is the end of high-strength side manganese steel pipes, stainless steel is Weiduo.

Small fan using anti-wind-Orio, its tail hummingbird fan in particular small light, wind, Orio is very sensitive and reliable. Wind is not more than 9, the work of hummingbird fans are stable and reliable.

Special Tip: If a typhoon or strong winds forecast over 10 and must end bolt down or tipped over to fans. Because more than 10 highly destructive winds, even if the full fan Orio, 12 are also likely to wind round the wind has been growing too fast, dangerous, even if the round but the wind speed, air Pole may be blown high winds, causing damage and danger. That the small fan to the anti-12 wind view is irresponsible and dangerous.

Endless ocean of endless energy - the development of ocean wave energy

From the 1970s oil crisis began, the beginning of attention to the use of local resources and find appropriate low-cost energy. The ocean is the cradle of human birth, 75% of the Earth's oceans are an area of human resources to be obtained from the sea has become an inevitable trend. Following the tidal wave is the generation after generation of the fastest growing forms of marine energy, so far, the world has been Japan, the United Kingdom, Ireland, Norway, Spain, Sweden, Denmark, India, the United States and other countries have been established on the sea waves power generation Device. 100 scientists from various countries over the years made more than 300 kinds of ideas invented a wide range of power generation equipment, power generation, but the prevalence of small, poor quality of power generation, single-kilowatt capacity in the level below, and other defects. Wave power generation technology and thus have not yet reached the level of universal application.

Wave energy is a renewable energy in the most volatile energy, the wave can not produce on a regular basis, with energy and strong, but slower and the changes in the characteristics of the cycle. The current wave-related power generation technology is inadequate, to take the low efficiency, can be converted to the secondary instability, as well as the marine environment of poor adaptability.

Is to introduce the relevant ocean wave energy development and utilization of the two technologies related to the above-mentioned wave power generation technology with the inadequacies of the substantive breakthrough.

Fluctuations in the exchange booster pump to installations

I hope this device to address the shortcomings of existing technology with a view to achieving efficient and can be adopted into a stable direct application of secondary energy. Fluctuations in the exchange booster pump to installations, including the 2 parts floating in the sea for the construction of a receiver and transducer function of the devices, including devices for the high-pressure chamber set the float, the Pistons room, and Pistons room and through the float through the center located along the Sea to pump in the tube. Pistons room on the crossing to open, and even by the high-pressure airway to float high-pressure gas-open side of the room, set in the high-pressure chamber side of the opening set only to return one-way valve piston in the room at the top of the channel is also on both sides of the mouth There are open dish by a small valve controlling the air intake. Another part of the Pistons and the indoor-Pistons even set up to promote the piston rod, the lower end of the piston rod forward even set up a resistance barrier over the plate.

It is worth noting that some of the 2: 1 float above the piston and rod to promote non-rigid connection of the combination of the two, both to ensure that the turbulence in the marine environment and to achieve relative motion with each other in reaction force to maintain vertical; Second, The above-mentioned pressurized gas chamber at the bottom of the sea level should be higher than that of the Pistons-diameter should be greater than the diameter of piston rod forward.

Fluctuations in the booster Oil Painting-Oil Painting Reproduction-Person Oil Painting-China Oil painting-Art Gallery-Famous Oil painting-Seascape oil paintings  pump to installations for the work of the course is that float by waves up to the role of lead pipes pump up campaign, and the piston-pump relative to the tube is relatively fixed points, the Pistons at this time of the pressurized chamber room ( Pistons isolation from the body into the upper chamber) of the volume increase, the disc-valve open, gas was inhaled; when the waves could disappear by the float gravity to the role of a certain speed goes down, so that the pressurized chamber Smaller size, gas pressure, the disc-valve closed, only to return one-way valve to open, high-pressure gas flowing through the catheter into the gas-float high indoor air in order to achieve the waves will be transformed into direct access to the To the second.

Pistons body from the sea by a high proportion of the decision itself, it is the same set of values, and because of a deep-sea waves in the sea level by the impact could be negligible. When it float by the waves to the role, can only advance the piston rod along with the occurrence of the relative role of the center line, pipe and pump piston rod to promote mutual restraint is the use of this method to ensure instability in both the marine environment under Relative motion, reaction force to maintain the vertical direction, the highest conversion efficiency.

In other words Piston fluctuations devices

In other words Piston volatile devices, including some of the 3. First, the sea used to build a receiving transducer and the high dam. Second, the bottom of the reservoir set up to take the system unit, which includes a group of miles into the piston and the cylinder containing the Pistons, Pistons to the top of its body through the pressurized tube at the same time floating on a sea-based units of float Pistons in the pressurized tube and pipe, the pipe in the pressurized in the back with only a single valve, in-Pistons on a one-way valve with pressurized water. Third, the Pistons set up a body at the bottom even more resistance to baffle.

In other words Piston fluctuations in the device can process the work is that the cylinder piston movement, compared with the piston-cylinder piston is a relatively fixed points in the wave role can be, and the pressurized sea water into the reservoir in high energy in order to achieve Conversion.

In other words Piston fluctuations devices should be noted that under the waters of the piston within the cylinder with intron-piston between the length of the home by the sea should be greater than the maximum wave height.

Above the sea to build the high dam and into one of the main structure, which is a high degree of design decisions require a high degree of head, it can be secondary to the application of a fixed-head of a high degree of stability in energy. In the role of the wave energy, and the pressurized sea water into the reservoir of high living, to achieve the purpose of energy conversion.

Float on the surface of the water is the carrier of the device, it is taken to the main body of its geometry, but the funnel-shaped cone, which determines the direction of the wave of its non-selective, all-acquisition wave energy. By the waves, float upward movement, will force the cylinder piston upward movement, as opposed to static float at the Sham-Pistons have a relative displacement, wave energy is in the process of acting, that is to take the course. When the waves will disappear, because of their high quality and the quality of the reservoir by Earth's gravity, to a certain speed of sinking, the momentum completely in the role of contrast-piston fixed at the same time, so that the piston inside the water pressure , To the high pressure reservoir, absorption and float momentum into a high reservoir of potential energy in order to achieve a high mining can and must be translated into a high degree of stability in the potential energy. As the piston body weight determines the distance it from the sea is the same set of values, and because of its deep water at the sea surface by the impact of smaller waves, so as to the role of float by the waves, along the only two in the The relative movement of the axis took place, piston and piston-cylinder with each other constraints. Using this method to ensure instability in both the marine environment, to achieve relative motion, in the opposite direction, maintaining the vertical force, the maximum conversion efficiency.

Fluctuations in the booster pump to installations and fluctuations in exchange for piston devices are structural simple, easy to implement and adapt to a variety of environmental waters, and high energy conversion efficiency, high-quality advantages.

Fluctuations in the booster pump to installations and fluctuations in exchange for piston devices, the disorder of the wave energy can be converted to a direct use of the stability of secondary energy. These two technologies can be directly used for power generation, the establishment of marine plants, used in desalination, hydrogen production and exploitation of the manganese nodules.

wind power industry is ushered in the golden age

From the convening of Xiangtan in Hunan, China's wind power industry in mechanical and industrial seminars will be understanding, Hunan Yu Jian of the National number one wind power industry cluster. At the meeting, the Standing Committee of the Hunan Provincial Party Committee, vice-governor Xu Xianping predicted in the near future, a national leading wind power equipment industry cluster in Hunan into the sky.

It is understood that from the oil painting ,beginning of 2005, Hunan, began plotting the development of wind power industry, has taken shape in Zhuzhou Southern Co., Ltd., Zhuzhou and Xiangtan Electric Group to lead the two major wind power a small industrial clusters. In September 2005, the National Wind Power Engineering Research Center to do in the locomotive and cars in the world famous South Zhuzhou Electric Co., Ltd. set up. In August 2006, Zhuzhou Southern car and Urumqi in Xinjiang Gold Wind Science and Technology Corporation signed more than 200 wind electric power generation contract.

At present, is located in Zhuzhou (national) high-tech development zone of Zhuzhou wind power equipment manufacturing base is in the planning and construction. The Chinese electrical products enjoy a reputation as the cradle of the Gordon Group of electricity as early as the early 1990s on research and development of the first in China to 200 kilowatt wind turbine, one after another and then developed a 300 kilowatt, 1300 kilowatts, 2200 kilowatts of wind and other Generators. To seize the enormous potential of wind power market, recently, Japan join hands in Xiangtan Electric Group Co., Ltd. production of the original Philip, the joint venture was set up wind power Lake Nan Xiang Co., Ltd., with an annual output of RMB may megawatt-class wind power generating units of 300 to achieve Sales of more than 3.0 billion. January 14, covers an area of 250 acres of the total installed capacity of wind power Xiang factory in Xiangtan (Germany) industrial park foundation.

In addition to the two fat, such as Hunan Zhuzhou Times Group to create high-quality companies are also part of the redoubling its efforts to build wind power equipment production base. As vice-governor Xu said, a large-scale wind power industry cluster, in Hunan Province is taking shape at the beginning. China's wind power industry development in the future is already here referred to the golden age of wind power, more people think of is this: under the blue sky and white clouds, white frame of a windmill, rotating the long leaf fan ... ....

China's hydropower consultants of the Group of Hospitals and South Africa by wind power experts say China's wind energy resources are abundant. According to the more than 900 weather stations nationwide observation data estimated that the land-based wind energy resources in China total reserves of approximately 3,226,000,000 kilowatts, of which wind energy can be developed reserves of 253,000,000 kilowatt, and the wind on the sea reserves are 750,000,000 kilowatts, for a total of 1,000,000,000 kilowatts, which is 10 meters high degree of calculation, if the 50 meters, according to the terms, it would also be doubled.

He said that China's wind generator industry, with Europe and the United States, in particular, there are comparable between the Asian countries. According to the latest data, Europe is the world's major wind power market, as of the end of 2005, the installed capacity of 410,000,000 kilowatts, accounting for the world's total wind power installed capacity of 69%. India's installed capacity of wind power is also the country's total power installed capacity of 3% of the total. However, the deduction of time, the future of China's wind power industry will have grown by leaps and bounds.

According to the State Development and Reform Commission plans, by 2020 China's total wind power installed capacity will increase to 30,000,000 kilowatts. China's hydropower consultants of the Group of Hospitals and South Africa experts believe that the current momentum of the wind power plant construction, will go a long way ahead. He estimated that during the 11th Five-Year Plan, the national total installed capacity of wind power is likely to 20,000,000 kilowatts, wind power equipment market will reach 1,300 billion yuan.

Wind energy technology in china

Wind turbines produce electricity by using the natural power of the wind to drive a generator. The wind is a clean and sustainable fuel source, it does not create pollution and it will never run out. Wind energy technology is developing fast, turbines are becoming cheaper and more powerful, bringing the cost of renewably-generated electricity down. Europe is at the hub of this high-tech industry.

The need for clean energy

Conventional methods of generating electricity burn fuel to provide the energy to drive a wind generator, usually by using the heat to provide steam to drive a turbine. These technologies may use fossil fuels, - coal, oil or gas - or nuclear fuel. Using fossil fuels creates pollution, such as oxides of sulphur and nitrogen which contribute to acid rain, and carbon dioxide which contributes to global climate change.

Although conventional sources of power dominate the energy needs of European countries, wind energy is growing rapidly. Renewable energy sources currently provide nearly 5.4% of the European Union's primary energy needs1 and have the potential to provide much more.

How wind turbines work

Almost all wind turbines producing electricity for the national grid consist of rotor blades which rotate around a horizontal hub. The hub is connected to a gearbox and generator, which are located inside the nacelle. The nacelle houses the electrical components and is mounted at the top of the tower. This type of turbine is referred to as a 'horizontal axis' machine.

Rotor diameters range up to 80 metres, smaller machines (around 30 meters) are typical in developing countries

Wind turbines can have three, two or just one rotor blades. Most have three.

Blades are made of fibreglass-reinforced polyester or wood-epoxy.

The blades rotate at 10-30 revolutions per minute at constant speed, although an increasing number of machines operate at a variable speed.

Power is controlled automatically as wind speed varies and machines are stopped at very high wind speeds to protect them from damage.

Most have gearboxes although there are increasing numbers with direct drives.

The yaw mechanism turns the turbine so that it faces the wind. Sensors are used to monitor wind direction and the tower head is turned to line up with the wind.

Towers are mostly cylindrical and made of steel, generally painted light grey. Lattice towers are used in some locations. Towers range from 25 to 75 meters in height.

Commercial turbines range in capacity from a few hundred kilowatts to over 2 megawatts. The crucial parameter is the diameter of the rotor blades - the longer the blades, the larger the area 'swept' by the rotor and the greater the energy output. At present the average size of new machines being installed is now super megawatt, 1.3-1.85MW, and there are larger machines on the market. The trend is towards moving to these larger machines as they can produce electricity at a lower price.

There are many different turbine designs, with plenty of scope for innovation and technological development. The dominant wind turbine design is the up-wind, three bladed, stall controlled, constant speed machine. The next most common design is similar, but is pitch controlled. Gearless and variable speed machines follow, again with three blades. A smaller number of turbines have 2 blades, or use other concepts, such as a vertical axis.

Most turbines are upwind of the tower - they face into the wind with the nacelle and tower behind. However, there are also downwind designs, where the wind passes the tower before reaching the blades.

Stall and pitch control

There are two main methods of controlling the power output from the rotor blades. The angle of the rotor blades can be actively adjusted by the machine control system. This is known as pitch control. This system has built-in braking, as the blades become stationary when they are fully 'feathered'.

The other method is known as stall control. This is sometimes known as passive control, since it is the inherent aerodynamic properties of the blade which determine power output; there are no moving parts to adjust. The twist and thickness of the rotor blade vary along its length in such a way that turbulence occurs behind the blade whenever the wind speed becomes too high. This turbulence means that less of the energy in the air is transfered, minimising power output at higher speeds. Stall control machines also have brakes on the blade tips to bring the rotor to a standstill, if the turbine needs to be stopped for any reason.

Most wind turbines start operating at a speed of 4-5 metres per second and reach maximum power at about 15 m/s.

Factors affecting performance

Most important is the windiness of the site. The power available from the wind is a function of the cube of the wind speed. Therefore a doubling of the wind speed gives eight times the power output from the turbine. All other things being equal, a turbine at a site with an average wind speed of 5 meters per second (m/s) will produce nearly twice as much power as a turbine at a location where the wind averages 4 m/s.

Second is the availability of the equipment. This is the capability to operate when the wind is available - an indication of the turbine's reliability. This is typically over 98% for modern machines. Last is turbine arrangement. Turbines in wind farms must be carefully arranged to gain the maximum energy from the wind - this means that they should shelter each other as little as possible from the prevailing wind.

Wind energy production and electricity demand

The wind is an intermittent energy resource - it does not blow all the time - but this does not reduce its value as a source of power. The variable output from wind energy poses no special difficulty for power system operation. Electricity demand is constantly fluctuating, and supply and demand have to be matched on a minute to minute basis, 24 hours of the day, every day of the year. The fluctuation caused by the introduction of wind to the system is not discernible above these normal fluctuations, and will not be until electricity generated from wind turbines reaches approximately 20% of the total system supply.

Wind energy effectively 'shaves off' some of the demand which has to be met by conventional generating plant. This is often described as having a 'negative load' effect on the electricity network.

Wind energy coincides well with period of peak electricity demand. Demand often peaks on cold windy winter days - just when wind turbines are at their most productive. Figure 2 illustrates the concept of negative load. It shows the electricity demand over a seven day period in February 1996 in England and Wales, at a time when demand was at one of the highest levels that year. The wind farm output data is the actual output of four wind farms, scaled up to show the effect of 10,000 megawatts of installed capacity. This would meet 10% of England and Wales' annual electricity demand.

Figure 2 The negative load effect: how wind energy reduces the need for conventional power.

(Source Econnect Ltd, UK, using data from the National Grid Company and wind farms.)

Figure 3 shows how well wind energy is matched to demand around the year. Electricity demand is higher in the winter, and winter months are also the windiest.

Figure 3 Yearly wind energy output and seasonal electricity demand.

(Source Econnect Ltd, UK, using data from the National Grid Company and wind farms.)

Capacity credit

Another way of looking at the value of wind energy is to look at its capacity credit. The capacity credit of a certain amount of wind energy can be thought of as the amount of conventional plant which could be 'replaced' by wind power, without making the system less reliable. In reality wind turbines are not installed in order that conventional power stations can close prematurely; building wind farms does help avoid the need to build new thermal or nuclear power plants.

Studies on how wind energy can best be integrated into electricity networks have been carried out in several European countries. Each study concludes that wind energy does have a significant capacity credit. In Denmark a capacity credit of 20 - 25% is used in comparative studies of the economy of different new energy technologies, and the country now gets around 20% of it's electricity from wind energy!

Other benefits of wind power

Apart from generating electricity without causing pollution, wind energy has numerous other advantages.

It is widely distributed - more countries have sizeable wind power potential than have large resources of hydro-power or fossil fuel reserves.

It is ideal for generating electricity at a local level - European wind schemes are typically clusters of around 10 - 40 turbines, providing enough electricity for 4,000 to 16,000 households. Some countries such as Denmark and Germany also have a high proportion of single turbines. The electricity can be fed directly into the distribution network, reducing electricity distribution and transmission losses. By contrast, electricity from larger power stations has to be transmitted on high voltage power lines and travel long distances before it gets to the point of use.

Wind energy is good for island communities - the supply can be connected to diesel or solar systems to provide back-up when the wind is not blowing.

Wind energy is low risk - the relatively small unit size of each individual wind turbine (or wind scheme) also reduces the risk of technical failure or industrial action compared with larger generating units.

Wind energy encourages energy diversity - it is sensible for any nation to have a balanced portfolio of energy technologies, rather than to rely heavily on a small number of energy sources. The energy mix among different European countries varies widely, with some countries more dependent on energy imports than others. The UK and Germany have a relatively diverse mix of fuels, whereas others are more dependent on oil (Spain and Greece), coal (Denmark) and nuclear (France and Belgium). Expanding the use of wind energy will increase energy diversity and improve the security of electricity supply. Energy diversity lessens international political sensitivity concerning fossil fuel reserves, volatility of oil and gas prices and the risks associated with nuclear power.

Wind energy capacity in Europe

Europe is the world leader in wind energy, with more installed capacity than any other region of the world. By the end of 1999 there was over 8,500 megawatts of installed capacity - more than double figures for 1996. This growth trend is expected to continue as wind is the fastest growing energy sector worldwide.

The future of wind energy

Improvements in wind energy technology mean that the trends which have led to the dramatic fall in the cost of wind energy are set to continue.

Countries all over the world are setting targets for wind power. It is estimated that 22,000 megawatts of wind energy capacity, in the form of 40,000 wind turbines will be installed in the next 10 years. This represents an annual market of around 2.4 billion Euros . Europe is the hub of this global business, with six companies supplying over half of the world's turbines global wind energy market. Europe stands to benefit greatly from this move towards sustainability.

Glossary and References

1 unit of electricity = 1 kilowatt hour

1,000 kilowatts = 1 megawatt

1 The Declaration of Madrid: An action plan for renewable energy sources in Europe. CEC, 1994

From:wind turbine

Wind energy resources

Wind energy resources is a can of clean renewable energy.



Yunnan majority of Pingba relatively poor areas of wind energy resources, wind energy resource-rich mountain. Meteorological stations throughout the province effective density 44.2-167.5 watts / square meter, effective use of a few hours 300-6500.



Wind energy resources in the distribution of the East West more than less, in most areas east of Ailaoshan effective wind energy density at 75 watts / sq m and above, the effective use of a few hours in 2000. Mountain effective wind energy density of up to 160 watts / sq m and above, the effective use of the number of hours up to 6000 hours, the most abundant wind energy close to the area level.



Ailaoshan most areas west of the effective wind energy density of 60 watts / square metres below the effective use of a few hours following the 1500-2000, the average wind speed in most parts of 3 m / s following, in addition to individual mountain, the wind had Development of value.



Wind energy resources distribution of the year season is the dry season, small rainy season. The dry season, the wind speed, wind energy density effectively, in more than 100-150 watts / sq m and above, the number of hours and more effective use of 500 hours or more. On the negative rate of the rainy season is generally in the 2 m / sec below, there is no development value.

Why hummingbird to a faster, power generation capacity

Hummingbird special lightweight motor, motor driven impeller rotation, like the Mara car, of course, to the faster than others, the wind speed equivalent circumstances, the hummingbird fan speed is the traditional fan speed of 1.5 times to three times. Wind rotate faster, higher wind energy utilization factor, the same speed, hummingbird fan received a round of the wind energy than conventional fan wind energy more acceptable to round of 25 to 40 percent.



Particularly in the small wind circumstances, the hummingbird Motor greater significance. Grassland in the summer (wind on the season), 300 W fan of traditional lighting for all difficulties and hummingbird 350 W fan able to lead freezer.

The principle of wind turbine

The principle of wind power is the use of wind driven windmill blade rotation, and then through the growth machine will improve the speed of rotation, to encourage power generators. Based on the current windmill technology, is about three meters per second breeze speed (the extent of breeze), you can start power generation.

Wind power is the world's become a craze for wind power without fuel, will not produce radiation or air pollution.



Wind power generation in Finland, Denmark and other countries is very popular; China's western region is also strongly advocated. Small wind power system efficiency, but it is not only the first component from a generator, but a certain scientific and technological content of the small systems: wind turbines + + charger digital converter. Wind generators from the nose, swivel, tail, composed of leaves. Each part is very important for all of the features: Leaves used to receive through the nose to the wind and power; always leaves in front of the tail to the wind direction to get the most out of the wind; swivel flexibility in the nose can turn to To achieve the reorientation of the tail function of the nose is a permanent magnet rotor, stator windings cutting electricity generated magnetic lines.

Wind wind turbine because of instability, the output is 13 ~ 25 V AC change, subject to rectification charger, and rechargeable battery has a right to make wind turbines generated electricity into chemical energy. And then use the protection of the power inverter circuits, batteries, the chemical energy into electricity exchange of 220 V, to ensure stability in use.

People usually believe that wind power generation by wind power generators full power decision, the greater would like to purchase the wind turbine, which is not correct. The current wind turbine only to the battery charge, but by the power storage batteries, people eventually use the power of size and battery size have a closer relationship. Power also depends primarily on the size of the size of the wind, and power is not only the size of the nose. On the mainland, a small wind generator will be the more appropriate than large. Because it makes it easy for small volume of lead and wind power generation, continuing small wind, more than 1 squally larger supply of energy. When calm and normal when people can be brought about by the use of wind power, which means a 200 W wind turbine can also be a large battery and inverter with the use, access to 500 W and 1000 W even greater power to.

The use of wind power generators, is to continue to use wind energy into our family of standard electricity, the extent of their savings is obvious, a family of electricity a year just 20 yuan of the cost of batteries. Now the wind generator than a few years ago have greatly improved the performance, previously only used in a few remote areas, the wind turbine to a 15 W light bulb direct use of electricity, one out of a dark and often damaged light bulbs. But now because of technological progress, adopt advanced chargers, inverter, wind power will become a scientific and technological content of the small systems, and can under certain conditions, instead of the normal electricity. Mountain to take this system can not be a perennial money-lights; highway can use it to the road signs at night lights; mountain children under fluorescent Wan Zixi in urban high-rise roof, can also be used wind motor, it will not only save but also a real Green Power. Families with wind generators, can not only prevent power failures, but also to increase the enrichment. In the tourism area, border guards, schools, and even behind the mountain, the wind turbine is becoming a people's purchasing hot spots. Radio enthusiasts can own technology in wind power generation services for the mountain people, so that people watching television and lighting electricity and urban synchronization, but also make their own enrichment work.

http://www.china-windturbine.com/blog/post/the-principle-of-wind-turbine.htm

Anhui ultra-low-speed wind turbine fill the gaps

Wind power is the world's new wind energy in the building of a very important part of it can make full use of energy and economic environment, many countries in this regard to the development and use, yesterday, in Funan County of Anhui, one from the private Research Institute developed the ultra-low-speed wind turbines in China to fill the technology gap.



In China, subject to the restrictions in the wind, usually in the Ningxia, Xinjiang, Inner Mongolia, such as wind larger open areas, wind power accounted for the major wind generators construction status, the average wind turbine needs at least 6-7 more strong winds before they can conduct Power generation. The Funan County of Anhui developed the new ultra-low-speed wind turbine, in the case of smaller wind can also generating.

From:http://www.allwindenergy.com/hummer/post/low-speed-wind-turbine.htm

wind generator for ship

As the cruiser sailing all over the world, wind turbine becomes a critical component. Because of the narrowness and high energy consumption on the ships, our products will be the best solution of the energy that you need. Used by thousands of people, our products is one of the most popular turbines in the market. Trusted by sailors and supported by global distribution network, our products have a promising market. It is easy in installation and free in maintenance with years of free maintenance service.

wind generator is also fit for boat and you just need to mount it on the stern with a tower kit or on backstay as the picture shows.

From:http://www.china-windturbine.com/blog/post/wind-generator-for-ship.htm

Electric Power Generators

With so many different applications, wind electric power generators are increasingly becoming used as portable energy sources as well as emergency fail-safe ones. wind Electric generators are used in different locations including RV and mobile home power sources, commercial properties where fail-safe energy is needed which includes casinos and hospitals, and even government properties like dams and nuclear power plants, although these last locations will use much more costly and powerful generators. Power generators are great products to help maintain electricity in homes during prolonged blackouts. They can keep the whole house powered or just certain appliances like refrigerators and freezers. Casinos use high electrical wind generators as backups to keep all slot machines and computers powered and hospitals have to have high powered generators to keep critical medical machines running. Government offices use extremely powerful backup generators to secure all necessary locations. Now that some of the useful applications of electric generators have been presented, lets discover the types of electrical generators.

what is wind Generators

Diesel Engine Generator

1) John Deere diesel engines: a) The power range of John Deere diesel engines is 15 - 373kW ; b) The structures include natural aspiration, turbo change and after cooled type, it is the first enterprise to use complicated electronic control system on non vehicle diesel engines, the system can accurately control torque output of the engines, it can even more shorten cold starting time and reduce black smoke ; c) Power tech is a new series diesel engine, it has kept its words that John Deere will implement strict norm for environmental protection and develop advanced technology ; d) John Deere 6125 electronic injection series diesel engine, rated rotation speed is 1500rpm, four stroke, six cylinders in line, pusher fan water tank cooling, it is in accordance with ISO3046 standards: i) Small volume, low emission and long service life ; ii) Excellent performance for economical fuel consumption ; iii) 6125 series electronic injection engine ; iv) Turbo charge air inter cooled ; v) 100% function of sudden charge loading ; vi) 24VD starting motor ; vii) Charging alternator driven by diesel engine ; viii) Oil filter, fuel filter, air filter

Gasoline Generator

wind Generator: Type: Brushless, Revolving Magnetic Field, Self-excitating, 2 Poles Single-phase. Voltage Regulator: Condenser Type: Frequency : 50Hz/60Hz ; Max. AC Output: 2.8KVA/3.0KVA ; Rated AC Output: 2.5kva/2.8kva ; Rated AC Voltage(V) :110,120,220,230,110/220,120/240 ; Power Factor : cosǾ=1.0. Engine: Model: HM168FB ; Type: Forced Air-cooled , 4-storke,OHV ; Displacement: 196ml ; Max. Output : 6.5HP/3600rpm ; Fuel: Unleaded Gasoline ; Fuel Tank Capacity: 12.0 l ; Continuous Operating Hours: 10.0h/9.0 h ; Oil: Engine Oil SD or Higher ; Oil Capacity: 0.6l ; Ignition System: T.C.I ; Starting System: Recoil and electric ; Operating Noise Level (7m): 65db(A)/68dB(A). Standard Features: Oil Alert/ Oil Warning Light / Fuel Gauge / Voltmeter / Pilot Light / AC Circuit Breaker /AC Socket /.

General Purpose Generator

1) New AVR (automatic voltage regulator) delivers non-fluctuating power. 2) Powerful KM2V80 diesel engine. 3) Electric starter ensures easy starting. 4) Low oil pressure alert system shuts down the engine automatically

wind Power Generator

1) Rated power (kW): 0.85 ; 2) Rated voltage (V): 220/230/240 ; 3) DC rated voltage (V): 12 ; 4) DC rated current (A): 10 ; 5) Rated speed (r/min): 3000 ; 6) Power factor: 1 ; 7) Insulation grade: B ; Rated frequency (Hz): 50 ; 9) Rated current (A): 4.0 ; 10) Net weight: 36kg ; 11) Dimensions (mm): 490 x 370 x 435 ; 12) Type of engine: LY152FD-A ; 13) Ignition: TCI ; 14) Starting system: recoil starter

Diesel Generator Set

1) A mobile power station ; 2) Reliable performance ; 3) Low noise ; 4) Easy starting ; 5) Less vibration ; 6) Widely used as power sources or stand-by power for posts, communications, highways, engineering fieldwork, restaurants, hospitals and cinemas

Gasonline Generator

1)Powered by 4 stroke OHV Gasoline Engine ; 2)Convenient Control Panels ; 3)Uniterrupted Quality Electrical Power ; 4)Large-Capacity Fuel Tanks ; 5)Noise-Dampening Muffers

High Voltage Generators

Our high voltage generators are suitable for operating X-ray tube as part of diagnostic X-ray machines.

MOzone Generator

1) Voltage: AC 220 - 240V / 110 - 120V ; 2) Power: 15W ; 3) Timer: 6 / 18 / 30min ; 4) Ozone output: 200mg/h ; 5) Pump output: 2 - 3L/min ; 6) Dimension: 143 x 98 x 46mm ; 7) Water treatment ; Air and water purification ; 9) Can be utilized easily ; 10) Adds interference units ; 11) Low magnetic radiation ; 12) No interruption of other electronic equipment and its circuits ; 13) Used for sterilization, disinfection and odors elimination in living rooms, meeting rooms, lavatories, classrooms, wards, amusement places, hotel guestrooms, etc. ; 14) Keeps food fresh by sterilizing fruit and vegetable ; 15) Disassembles hormone and antibiotic in meat in kitchens or restaurants

Diesel Generator

We can supply different types diesel wind turbine from low power to high power(3kw-3200kw) from china.

AC Generator

We can provide 4kW to 1000kW AC wind generators for normal and marine diesel generating sets.

Gasoline Generator 1000w (SE-1GF)

1) Generator: a) Model: SE-1GF ; b) Type: brush / brushless ; c) Voltage adjustment: AVR / capacitor ; d) Frequency: 50 / 60Hz ; e) MAC output: 1.0 / 1.1kVA ; f) Rated AC voltage: 110 / 120 / 220 / 240V ; g) Rated AC output: 0.9 / 1.0kVA ; h) Power factor: cos ¦Õ1. 2) Engine: a) Model: SE-152F ; b) Type: OHV, forced air-cooled, 4-stroke ; c) Displacement: 80.7cc ; d) Max. output: 1.8kW / 3600rpm ; e) Fuel: unleaded gasoline ; f) Oil: SF, or higher grade ; g) Oil capacity: 0.4L ; h) Firing system: TCI ; i) Starting system: hand started ; j) Operating noise level: 67dBA ; k) Dimensions (L x W x H): 49 x 37x 43.5cm ; l) Dry weight: 40kg ; m) Select matching: 4-wheel group

From :China Manufacturer

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