Wind Turbines Manufacturer in China » wind turbine blades

Largest Wind Turbines Blade

admin — Mon, 14 Feb 2011 14:24:38 +0000

Global leader in power generation equipment and services, Alstom, and LM Wind Power, leading wind turbine blade supplier, have entered a strategic partnership to develop the world’s longest wind turbine blade ever produced. The new blade is a unique development designed specifically for Alstom’s next generation 6-megawatt (MW) offshore wind turbine.

Development of the blade will require more than 20,000 hours of work by LM Wind Power’s specialist teams focusing especially on aerodynamics, structural design, and production processes of this giant. The use of specifically developed material compounds will enable LM Wind Power to maximise strength and durability while producing an exceptionally light blade. Furthermore, it will feature a structural design specifically tailored for Alstom’s turbine, as well as LM Wind Power’s proprietary aerodynamic profiles based on its latest GloBlade®, which offers an additional 4-5 percent of annual energy production compared to standard designs. The geometry of the new blade has already been validated in LM Wind Power’s own wind tunnel – the world’s only wind tunnel customized for aerodynamic testing of wind turbine blades.

The prototype blades will be produced in LM Wind Power’s Danish factory in Lunderskov and will be ready for installation at Alstom prototype sites in Europe to start testing during the winter of 2011.

LM Wind Power is one of the pioneers in offshore wind. Its first blades installed offshore have been operating since 1991 at the world’s first offshore wind farm, Vindeby, Denmark. Since 2004, LM Wind Power has supplied its 61.5-meter long blades for offshore. One example is the Beatrice Wind Farm Demonstrator project 25 kilometres off the coast of Scotland. These blades are currently the world’s longest in serial production and have been installed in offshore wind farms across Europe, where they achieve very high availability.

Alstom’s 6 MW turbine has been optimised for the UK’s Crown Estate Round 3 and other North Sea markets. Two prototypes will be installed in 2011 and 2012, a pre-series in 2013 (the final rollout step before full commercialisation), and series production in 2014. In January Alstom and EDF Energies Nouvelles (EDF-EN) announced that, using this turbine, they would bid jointly for projects under the recently launched 3 GW French offshore wind tender.

The turbine incorporates leading edge technologies to meet the challenges of the tough marine environment and bring down the cost of energy (COE). These include the turbine’s very large rotor diameter and 6 MW power output for higher energy output. High yield helps offset wind farm investment and operating costs, lowering COE. The turbine’s weight has also been optimized to reduce installation and infrastructure costs.

The turbine features Alstom’s unique ALSTOM PURE TORQUE™ technology to protect and improve the performance of the generator. The technology protects the small wind turbine’s drive train by deflecting unwanted stresses from the wind safely to the tower. Only turning force, or torque, is transmitted to the generator thereby boosting the turbine’s reliability.

Furthermore the turbine’s innovative permanent magnet direct drive system enables a compact, lightweight design that reduces service costs and improves operating efficiency. The system’s low number of rotating parts increases reliability, to maximise turbine availability and further reduce maintenance costs.

Alfonso Faubel, Alstom Power’s Wind business Vice President, says: “LM Wind Power’s quality technology perfectly complements our innovative wind turbine development capability. We have a partner of undoubted pedigree, a proven track record on offshore blade development and the global manufacturing presence and development resources to support our offshore growth plans. The close collaboration of both companies in offshore wind will deliver best in class technology to help bring down the COE, and a highly competitive market offering that will help us become a leader in the global offshore wind energy market.”

Roland Sundén, CEO LM Wind Power Group, says: “I am confident that Alstom’s innovative turbines flying the world’s longest blades from LM Wind Power generators will give them a clear COE advantage, and we are very pleased to extend our excellent working relations with Alstom into this prestigious project. The key to success in offshore, given that you have a quality wind turbines manufacturers, is strength of balance sheet, project management skills and power engineering experience. LM Wind Power recognizes Alstom’s clear advantages in this respect compared to many others in offshore.”

By: Manufacturing Group

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what is design principle of Hummer Wind turbine blade

admin — Sun, 13 Jun 2010 16:01:49 +0000

The principle of wind power is driven by wind turbine blades rotate, and then through the growth machine will improve the speed of rotation, to induce wind generators. According to the current of the windmill is about three meters per second wind speed (wind level), it can start generating electricity.
Wind power is the world form a boom for wind power without fuel problems, it does not produce radiation or air pollution.
Wind power in Finland, Denmark and other countries is very popular; western China is also strongly advocated. Efficient small-scale wind power generators system, but it is not only composed by a generator head, but a certain technology in the small systems: wind turbine + charger + digital inverter. Wind turbine by the nose, swivel, rear wing, leaf form. Each part of the very important functions of various parts: 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; swivel head can rotate in order to achieve flexibility tail to adjust the direction of the function; head of the rotor is permanent magnet, the stator windings cutting magnetic lines to produce electricity.
Fluctuating wind power generation due to wind, so the output is 13 ~ 25V AC change, subject to the charger rectifier, battery charger store again, so that electricity generated by wind turbines into chemical energy. Then protect the inverter circuit, the battery inside the AC 220V chemical energy into electricity, can guarantee the stability of use.
Usually people think that wind power generator wind power entirely by the decision, always wanted to buy a bigger wind turbine, which is not correct. The current to the battery charging wind turbines only, the energy stored by the battery up, people eventually use electric power, size and battery size have a closer relationship. Power depends on the size of even the size of wind, not just the size of the power head. On the mainland, a small wind turbine will be more appropriate than large. Because it is easier to drive and a small amount of wind power generation, continuous small wind, strong wind better than the moment a large supply of energy. When no wind it can also be caused by normal use of wind power, that is a 200W wind turbine can also be a large battery and inverter with the use, access to 500W or 1000W power out even more.
Use of wind generators, wind energy is pouring into our family used to the standard electricity, the savings level is obvious, a family only 20 yuan a year of electricity cost of battery fluid. And now the wind turbine than a few years ago have greatly improved the performance, was only used in a few remote areas, wind generators connected directly to power a 15W light bulb, a clearly a dark and often damage the bulb. And now because of technical progress, the use of advanced chargers, inverters, wind power become scientific and technological content of the small systems, and can under certain conditions Daiti normal market Dian. Mountain to the system can not be a perennial money-lights; highway signs used it to do the night lights; mountain children can study up under fluorescent lights; urban high-rise roof, wind turbine can also be used, which not only save but also real Green Power. Domestic wind generators, not only to prevent blackouts, but also increase the zest for life. In the tourism area, border, school, military and even behind the mountain, wind turbine procurement is becoming a hot one. Radio enthusiasts could use their own wind power generation technology in the service for the mountain people, so that people watch television and lighting synchronized with the city, but also make their own enrichment work.

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hummer wind turbine blades

admin — Wed, 16 Sep 2009 14:45:54 +0000

Pictures show the new generator wind blade and the wind blade’s detail structure.

The impeller wing section design done carefully by the aerodynamics expert, according to the airscrew structure, takes shape by the intensity glass fiber reinforced plastic, the end joint tech has the extremely low starting and cut-in point, ensures the low wind start and stable quiet running.the wind power utilization ratio enhance up to 0.26 from the traditional 0.5, the extremely high wind power utilization ratio.

Our Hummer Dynamo limited company contrasts the domestic and foreign several small wind-driven generator match blade manufacturer’s blade, through many tests in the foundation, the independent development has designed one kind of new wind blade

In view of the traditional glass fiber reinforced plastic wind blade cannot bear the gale, the low temperature easy break, the gale area service life not to surpass for 5 years and other flaws. Our hummer company developed high strength wind-driven generator wind turbines blade which has controlled the type straight. This wind turbines blade structure is firm, can bear 8 levels of gales.

Our hummerwind turbines mini wind-driven generator adopts outside rotor unique design, reached “own energy consumption low, the wind power utilization ratio to be high the high request. The new wind blade used cut -wind structure, the generator movement does not have the axial force, but can protect outside rotor maximum. Enabled the wind power utilization ratio enhance from traditional 0.26 to 0.43, has achieved the breeze start truly

Hummer wind blade’s successful application causes the problem that gale area such as Inner Mongolian prairie and coast where the wind-driven wind generator’s wind blade damage rate highly, is readily solved. Simultaneously made the entire wind turbine’s service life prolong three to five years. Because hummer mini wind-driven generator wind blade use “the end joint tech stable quiet running, also reduced the noise and has brought enormous convenient for user’s use and replacemen

The wind blade according to the airscrew structure and technics to manufacture, the wind blade has passed through the transient equilibrium test, firm and durable, design life for 8-10 years

After studying rotors blades at home and abroad, Hummer company independently designs a new type blade basing on a lot of tests

The traditional wind turbines blades made in glass fiber reinforced plastic is not resistant to strong wind, it is easy to break at lower temperature and lasts less 3 years if used in strong wind areas. While Hummer’s blade is solid and resistant to wind 8-grade up, which overcome the shortcomings of traditional products .

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