Wind Power,Wind Turbine Manufacturer

Place for small wind turbines installed generating capacity and safe operation is very important, introduced the following for reference:
A good site should have installed two basic requirements: high average wind speeds and less turbulence.
(1) the higher the average wind speed, small wind generator output power and power generation capacity will be.
Wind energy is proportional to the cube of wind speed. Example: 5m / s wind speed is about 4m / s wind speed is 2 times.
(2) location of small wind turbines installed air is unstable, severe turbulence, small-scale wind turbine generators by the destructive power on the big, small wind turbines is not conducive to safe operation for many years, but will also significantly reduce the turbulence generating capacity.
Fans of the tower as high as possible, because the higher from the ground, wind speed, air flow more smoothly.
In flat areas,wind turbines installation height of not less than the recommended 8m. Trees and various buildings will form a barrier to airflow, the air in front and the back of these barriers will form a stagnant zone of turbulence and disorder, should avoid this type of fan installed in the area. Tower height of at least than the highest obstacle within 100m above 2m.

Efficient magnetic levitation wind turbines performance characteristics:
1, the magnetic levitation technology, the fan without any mechanical friction in the case of rotation, smooth and efficient.
2, blade made of high strength lightweight aluminum die casting alloy, hollow drawn shape, streamline design, smooth rotation, no noise.
3, start with low wind speed (1 m / s wind speed start), anti-typhoon, anti-corrosion, anti-sandstorm superior performance.
4, attractive appearance, soft colors, easy identification of birds.
6, ball lightning protection device, effectively prevent the natural lightning, in line with the “China National Lightning Protection Standard GB50057-94″
7, low-voltage 12V DC output, without risk of electric shock.
8, the life of more than 20 years, using magnetic levitation technology, no mechanical friction, long service life.
Efficient use of magnetic levitation wind turbine generator practical application of case: 1 remote power supply (2) independent home power supply 3 Power supply ship 4 communication base station power supply 5. Agriculture, Fisheries and electricity 6 street 7 powered traffic lights 8 forces the island independent power supply system 9. wind wind power landscape education, Taima efficient magnetic levitation wind turbines manufacturers service life of more than 20 years, using magnetic levitation technology to high vertical axis wind turbines in the absence of mechanical friction of the environment to run, not only improved vertical axis wind turbine power generation efficiency of magnetic levitation, and a vertical axis extending the life of maglev wind turbine

GE is a global market leader in the field of wind energy. 1.5 MW wind turbines, for example, the global total of 15,000 units have been installed GE 1.5 MW wind turbines generator , clean energy produced annually by coal-burning alternative to 25 million tons, representing a decrease of more than 72 million tons of carbon dioxide emissions.

Recently, GE Global Research Center announced the launch of the U.S. Department of Energy-funded $ 3 million first-year project to develop a new generation of 10 to 15 MW capacity wind turbines. The number of wind energy research project is one of GE, to the most economically feasible way to use wind energy. The second phase of the project will explore the potential of the technology industry. In this project, the U.S. Oak Ridge National Laboratory (ORNL) will be an important partner for GE, GE to help with this investigation and to reduce high-risk project-related technical challenges.

“Wind energy industry increasingly seek higher MW devices, to maximize the use of clean wind energy around the world, so the need for new technologies to support the higher capacity of the fan,” GE Global Research Center Wind Energy technical director Keith Longtin said: “The biggest challenge is to deliver the proper size, economically viable solution. application of our magnetic resonance imaging superconducting magnet system 30 years of industry experience, we are developing innovative generator technology can produce more power, while reducing the cost of wind power. ”

Generator is an important part of the fan, blades can be converted into mechanical energy generated by the availability of electricity. Generator efficiency will directly affect how much wind energy can be converted into electrical energy. Currently, most of the fans with a gearbox with the traditional generator. Gearbox is used to enhance the fan speed of the spindle, thereby reducing the generator torque. Despite the high efficiency fan now, but with the fan capacity and thus the greater the need for additional weight and maintenance costs, resulting in higher costs.

Keith Longtin said the innovative use of superconducting technology will significantly improve the generator, and makes out of the gearbox has become more affordable. The key is to reduce the wind generator size and weight, while reducing speed and increased torque. As the superconducting coil generates a strong magnetic field, thus reducing the use of iron in the generator, the use of superconducting technology can reduce the weight of the generator.

GE’s use of a superconducting wind power generator design a new architecture, and proven low-temperature cooling technology, resulting in improved reliability of the generator package. Compared to other competitive technologies, GE is developing superconducting generator designed to have twice the torque density, and reduce dependence on the rare earth (RE is the wind power industry, the materials used permanent magnet motor). Higher levels of the generator power, coupled with higher energy conversion efficiency, will result in more favorable economies of scale (such as a given wind farm capacity, require less wind towers), and thus help reduce the cost of wind power .

Denmark-based LM Wind Power, the world’s largest manufacturer of wind turbines blades, is considering establishing a plant in South Africa to supply the African market and other top emerging wind markets such as Brazil, a senior official said on Wednesday.

The mooted plant, which would be LM’s first in the southern hemisphere, could also boost a nascent wind power market in Africa’s strongest economy as it moves away from coal, which supplies more than 90 percent of South Africa’s electricity.

“Our typical plant layout will have investment of around 24 to 25 million euros ($34 million). We are looking at a plant of about 100,000 square meters,” Nirmal Gupta, director for key accounts and strategic positioning at LM, told Reuters on the sidelines of a wind conference.

The firm is in talks with South African development financier, the Industrial Development Corporation, and expects to make a final decision before year-end, he said.

Two sites for the plant have been identified in the Western Cape and Eastern Cape provinces, Gupta said.

The decision will depend not only on South Africa’s immediate demand but also on anticipated demand from other African countries developing significant projects, such as Kenya.

“Our logistic team also reported to us that the shipping routes from South Africa are much more economical to countries like Brazil, so we are not only looking at Africa,” Gupta said.

Brazil’s blustery coastlines and growing electricity demand have spurred a wind power rush as investors flock to build turbines and establish small wind turbines farms.

China’s Goldwind and Indian wind turbine maker Suzlon Energy have already indicated they wukk consider setting up wind generators manufacturers plants in South Africa.

India’s new energy company ReNewWindPowerPvt.Ltd. Monday announced that the U.S. investment banking giant Goldman Sachs will invest up to its 10 billion rupees (about $ 201 million). It is reported that, ReNew founder SuzlonEnergyLtd. Former chief operating officer Suman Te – New Ha (SumantSinha).

Analysts pointed out that Goldman Sachs Group, this investment that wind turbines India’s new energy business is being more and more the attention of major international institutional investors. Currently, the Indian government for the development of new energy businesses attach great importance to and including giving tax breaks, including a series of financial subsidies.

As of now, India’s renewable energy capacity has reached 20 billion watts. Indian Renewable Energy ministers to Faro – Abdullah (FarooqAbdullah) said earlier this month, India needs to continue to invest $ 100 billion funds to add 500 by 2020 gigawatt installed capacity of renewable energy .

ReNew said the company plans an annual increase of 200 million to 300 million watts of wind power installed capacity in 2015 to 10 billion watts of generating capacity. Currently, ReNew is the construction of Gujarat in western India, 25 million watts of wind power generator capacity, while still close to 60 million watts of Maharashtra construction of wind power generating capacity.

Based on renewable energy consultancy EnergyAlternativesIndia data provided in 2009 and 2010, the Indian wind power industry, the average annual investment of over $ 3 billion.

Laying in their own solar panels on the roof, it is very common things. The market also have a wide range of products, a phone, or even click, they will come installed.

Well, there is no one on the roof in their own “pull the wind power generation” mean? Oh if not more. The reason there are two: the sound of wind turbines noisy and inefficient. Traditional wind turbines need wind-driven rotary blades, and through the gear drive to drive generators. A gear, it will produce a small noise. The wind also need to be strong enough (such as speed of about 13 km), before being given the power to promote the heavy generator. Some Americans are living in a check to the wind resource map, it may be because of lack of wind all year round give up the idea. Besides the efficiency, please note that the wind generator is installed in the axis wind turbine blade parts is precisely the lowest speed, for example, and leaves only the outer end of the tenth. Low speed, which means the natural energy into electricity less.

To solve the problem, we must start from the design, abandoned generator, abandoned gear. This is the United States, Michigan wind power company (Windtronics) WT 6500 developed the idea of ​​wind turbines manufacturers .

WT 6500 is about 2 meters in diameter, turbo, relatively fixed frame, fitted with copper coils; the rotating part of the 20 blades, leaf top installation made with rare earth magnets. With a little breeze (eg, about 3 km per hour), the leaves will turn, lead copper coil magnet swept frame, to produce a current. Issued by the current collected by a sine wave inverter, can be stored in batteries, can also be converted into AC by the DC immediately after use.

Turbines are equipped with flaps on both sides of frame, in addition to help get more air flow, but also to the role of deflection by wind turbines, it aimed “thunder” in order to improve the efficiency of energy capture.

China has immense wind energy ambitions. Wind energy is considered an indispensable instrument for dealing with the issues of a strongly growing domestic demand for energy and natural resources, globally declining fossil fuel reserves, and the negative environmental impact of using fossil fuels. China has implemented many different policies and measures to overcome these challenges.

Most recently, in its 12th 5-Year Plan, which runs from 2011 to 2015, China  wind generator has put strong emphasis on renewable energy and energy efficiency, since it states that ‘transforming China’s energy development model to a low carbon economy is a top priority’ . The 12th 5-Year Plan also includes an official wind energy target of 100 GW of installed and grid-connected capacity by 2015 (of which 5 GW is to be located offshore) and 160 GW by 2020 (of which 30 GW is to be located offshore). In addition, new regions that had not previously been considered priorities for strategic wind farm development within the ’10 GW Megabase Programme’ or the ‘Wind Base Programme’, due to low wind speed in the area or high altitude, have been so designated in the 12th 5-Year Plan. These include Henan and Yunnan.

In 2010, China also stated that it would ‘give top priority to developing offshore wind power’. Offshore wind power is a nascent sector in China today (about 100 MW of installed capacity), but the ambition is to have an installed base of 30 GW by 2020. Taken as a whole, China’s wind turbine generator renewable energy policies have proven highly successful, especially for wind energy, as evidenced by the facts that China has even exceeded every wind energy target set since 1996 and has become the country with the most installed wind energy capacity in just a few years’ time. In late 2010, installed capacity exceeded 42 GW, almost all of it onshore. In comparison, installed capacity of the other leading countries, the US, Germany and Spain, reached 40 GW, 27 GW and 21 GW, respectively, by late 2010. Although in terms of installed capacity, China small wind turbines is the largest single country, the EU is still the largest market.

After 2007-2010, “high” development, China’s installed capacity of windmill power industry ranks first in the world. However, in 2011 the domestic wind power industry is slowing, Sinovel, wind technology, wind electric, Hunan Electric shares and other areas of wind power along with general performance of listed companies fell sharply.

Industry-leading Sinovel and Goldwind, for example, Sinovel interim financial report, first half operating income of 5.325 billion yuan, down 29.45%; complete net profit of 659 million yuan, down 48.30 percent. Goldwind first half operating income of 5.194 billion yuan, down 17.61%; complete net profit of 425 million yuan, down 45.05%.

2011 best free stock software! Some stocks will definitely regret fleeing flesh sudden unexpected surge is likely to shareholders Gospel: lock-stock live! In fact, the industry had anticipated the current situation of the wind power industry, Goldwind had before the responsible person , told reporters that the wind power industry is about to end this round of rapid growth for some time to enter the stable stage of development.

Wind power enterprises in the general decline in reporting the results from many causes. First, the state in order to further standardize the development of wind power industry, wind power projects to tighten the right of approval, and proposed a more stringent standard of wind power, these initiatives to further improve the wind power industry, technological barriers, but also to increase the fan wind turbines manufacturers costs. Second, the macroeconomic environment of rising raw material prices and the financial pressure weakened the profitability of wind turbine manufacturers. Third, the explosive growth of the industry so that fans can start producing a surplus of more intense competition between manufacturers, resulting in falling prices for fans, businesses gross margin also fell. For example, domestic machine manufacturers in 2011 total production capacity has reached 29GW, while demand was 15-18GW, excess capacity is difficult to digest.

Although the wind power business in the first half of the performance hit “Waterloo”, but the industry is still in the future development of China’s wind power industry, promising that the wind power industry slowdown is now under the control of national policy in a normal phenomenon.

“Twelve Five” period, China will strive to make non-fossil energy in primary energy consumption reached 11.5% in the proportion of wind power development will be the focus of the object. Under the current plan by 2015 wind power capacity will reach 100 million kW, distributed wind power installed capacity reached 25 million kW, 5 million offshore wind power kW. Thus, with the improvement in energy consumption structure and the promotion of energy conservation, wind power as the most mature technology, the fastest growing new energy, great potential.

Investment Advisor in the new energy industry researcher Xiao letter that the wind power industry’s future development should be directed to quality by the home wind turbines number of changes from land-based wind power to offshore wind power development, the focus changes from development to distributed development. It is reported that wind power to break through the bottleneck, the state in the “five” period will be diverted to “build a large base, into the bulk power system” model of “centralized + decentralized” approach, the development of low-speed wind, and to encourage decentralized access network.

In addition to land-based wind power centralized and distributed parallel development, the future prospects for the development of offshore wind power can not be underestimated. According to the National Energy Board’s data show that China has built offshore wind power 138,000 kW. National Energy Bureau of the tender of 100 million kW project is ready to start, the project also has 1.3 million kW by the National Energy Board for approval. Meanwhile, in the domestic wind power industry growth rate of decline in the overall context, and actively expand the international market has almost become a strength of the wind turbines equipment manufacturer’s common choice.

Can be expected, this round of adjustment is conducive to the development of China’s wind power swinging back, in

“China is a market you can’t ignore,” says Kim Kweon Tae, head of Hyundai Heavy’s low-carbon energy business. “There will be a lot of competition but we plan to offer better quality and services.”

Hyundai Heavy is looking to raise clean energy sales to 4 trillion won ($3.8 billion) in 2016. This is a dramatic rise from the 600 billion won brought in by the company last year. The company is also looking to acquire solar power companies to boost its solar offerings.

“We are open to opportunities for takeovers in the solar energy business,” says Kim. “We have been approached, but we aren’t in a rush.”

The first turbines produced by the new plant in China will go to the development of a wind farm in Pakistan in a joint agreement between Korea Southern Power Co., Hyundai Engineering Co., Hyundai Corp., and Yunus Brothers of Pakistan. The wind generator farm will provide 50 megawatts of electricity to power 60,000 homes a year.

In recent years, major international brands imported bearings into the wind power generation, China’s wind power market is very broad, in many brands of imported bearings FAG bearings unique, research-axis Trading Co., Ltd. Shanghai today, I will introduce FAG Bearing several features of wind turbines bearings, for your reference.

FAG bearings for wind turbine bearings can be divided into three categories: yaw bearings, pitch bearings, transmission bearings (main shaft and gearbox bearings). Yaw bearing mounted on the tower and the cockpit of the junction, pitch bearings installed in each blade root and hub joints. Each wind turbine equipment with a set of three pitch yaw bearings and bearing.

Here mainly to introduce a few wind turbine generator bearings FAG bearings of several prominent features:

1, FAG Bearing material

This standard specifies the yaw, pitch bearing rings of material selection 42CrMo, heat treatment with the overall quenching, after quenching hardness 229HB-269HB, part of a surface-hardened raceways, quenching hardness 55HRC-62HRC. As the wind turbine yaw, pitch bearing the force complex and bearings to withstand shock and vibration is relatively large, therefore, required to withstand the impact of both the bearing, but also bear a greater load. Wind turbine life requirements of the host for 20 years, bearing the cost of installing a larger, thus requiring yaw, pitch bearing life have reached 20 years. This matrix hardness of bearing rings 229HB-269HB, able to withstand shocks without plastic deformation, while part of the raceway surface hardening hardness 55HRC-62HRC, increase the contact fatigue life, FAG bearings to ensure long life requirements.

2, low temperature impact energy can be carried out at -20 ℃

The standard of yaw, pitch wheel bearing rings low impact energy requirements: -20 ℃ Akv not less than 27J, cold under the Akv value can be determined in consultation with users. small Wind turbines may work in very cold areas, the ambient temperature as low as about -40 bar, the bearing operating temperature range of -20 ~ C or so, bearing in low temperature conditions must be able to withstand large impact loads, therefore, required bearing rings material in the quenched and low temperature impact energy must be done after the test, take the bearing rings made on the part of the sample or the same performance and with rings under the same conditions, the sample heat-treated at -20 ~ C environment do impact function tests.

3, FAG Precision Gear Bearing

As the wind turbine bearing drive accuracy is not high, and the relatively large diameter ring gear, gear modulus is relatively large, therefore, the general level of accuracy required by GB/T10095.2—2001 gear in the 9 or 10. However, due to working conditions of small gears and bearings between the ring gear has an impact, so the bearing ring gear tooth surface to be hardened, pinion tooth surface hardness generally 60HRC, taking into account other life design, hardened gear tooth surface hardness requirements not be less than 45HRC.

4, FAG Bearing clearance

Yaw, pitch bearings have special clearance requirements. Relative to the yaw bearing, pitch bearing relatively large impact load, the wind shaking the leaves are large, so the required pitch bearing clearance should be zero or slightly negative clearance clearance values, so that the situation in the vibration bearings can be reduced under fretting. Yaw bearing clearance requirements for small value, that is 0-501 ~ m. In addition, because wind turbines manufacturers yaw and pitch rotation bearing driven by the drive motor, FAG bearings in a small negative clearance or clearance state should ensure that the drive motor can be driven, therefore, need to load bearing in the assembly after the measurement start friction torque, the specific torque value according to the different host-driven systems are not the same.