Articles About wind turbine
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A critical problem for wind turbine gearboxes is failure of rolling element bearings where axial cracks form on the inner rings. This article presents field experience from operating wind turbines that compares the performance of through-hardened and carburized materials. It reveals that through-hardened bearings develop WEA/WECs and fail with axial cracks, whereas carburized bearings do not. The field experience further shows that a carburized bearing with a core having low carbon content, high nickel content, greater compressive residual stresses, and a higher amount of retained austenite provides higher fracture resistance and makes carburized bearings more durable than through-hardened bearings in the wind turbine environment.
The chemical and physical properties of gear oils may change, depending - more or less - upon their formulation and the environmental conditions under which they are used. This is why - after three years of use in a wind turbine - a gear oil was examined to determine if indeed changes were evident and if the protection of the gears and rolling bearings still met the same requirements as would be expected of fresh oil. Our findings revealed that the existing gear oil - as well as its ability to protect the gears and rolling bearings - had degraded very little compared to fresh oil.
In order to analyze the different gear oils suitable for the lubrication of wind turbine gearboxes, five fully formulated ISO VG 320 gear oils were selected. In between the selected gear oils, four PAO base oils can be found: PAOR, PAOM, PAOC and PAOX. A mineral-based oil (MINR) was also included as reference.
The growth of worldwide energy consumption and emerging industrial markets demands an increase of renewable energy shares. The price pressure coming from coal, oil, nuclear and natural gas energy - combined with enormous worldwide production capacities for components of wind turbines - make wind energy a highly competitive market. The testing and validation of gearboxes within the test rig and the turbine environment attract a strong focus to the needs of the industry. The following contribution sums up the typical process requirements and provides examples for successful system and component verifications based on field measurements.
A Q&A with N.K. Chinnusamy, president of Excel Gear of Roscoe, IL.
For a 5-megawatt wind turbine prototype, aerodyn employs the latest control and software technologies, including a comprehensive PC-based control solution and the new modular TwinCAT Wind Framework. The TwinCAT Wind Framework features the latest software engineering and Big Data applications to extend current Industry 4.0 concepts to the wind energy industry. The modular software supports, for example, the direct provision of sensor data to the operatorâ™s database, and in general enables the easy adaption of the wind turbine operation management to future requirements.
The proof of the reliability of a gear drive is now an additional requirement. In Europe, the acceptance authorities for wind turbines are requesting a system reliability proof from gearbox manufacturers. The AGMA committee reviewing the AGMA 6006 standard for wind turbines is considering adding a chapter about design for reliability. However, reliability considerations are not new; NASA, for example, was in the 1980s using reliability concepts for gear drives.
The Department of Energy estimates that 4 million megawatts of potential powerâ”four times the amount all U.S. power plants combined currently produceâ”exists in offshore wind energy. Construction of Americaâ™s first offshore wind turbines began in July. The wind farm, which is being constructed off the coast of Block Island, RI, will consist of five turbines. Together, they will produce 30 MW.
U.S. wind turbine growth puts a new spin on bearing manufacture.
After a sluggish 2013, annual installations of new wind turbines grew by 44% in 2014, according to the Global Wind Energy Council. And while much of that growth has been in Asiaâ” particularly China, which now leads the world with 114 GW of installed capacityâ”the USA, Europe, and the rest of the world expect steady growth for the next couple of years as well (Fig. 1).
In recent years the estimation of gearbox power loss is attracting more interest â” especially in the wind turbine and automotive gearbox industry â” but also in industrial gearboxes where heat dissipation is a consideration as well. As new transmissions concepts are being researched to meet both ecological and commercial demands, a quick and reliable estimation of overall efficiency becomes inevitable in designing the optimal gearbox.
The latest developments for wind turbines from Voith Wind rely on proven technologies.
Th e signing of a contract for more than 5,000 sets of SKFâ™s latest high-capacity cylindrical roller bearings (HCCRB) for wind turbines will impart added load-carrying capacity, more reliability and longer life to the Nanjing Gear Companyâ™s (NGC) line of gearboxes for wind generation applications.
LEGO & Vestas Collaborate on Sustainability Project.
Bearing subsystem life and reliability explained.
One of the largest components manufactured by Schaeffler last year was a double-row tapered roller bearing featuring an outer diameter measuring 3.6 meters and a weight just over nine tons.
Prototype and Process Development Ensuring Stable Quality at the Highest Level
Wind turbines are getting bigger than ever, and the manufacturing infrastructure that facilitates their construction needs to start growing with them.
Wind is a form of solar energy. Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earthâ™s surface, and rotation of the earth. Wind Turbines convert the kinetic energy in wind into mechanical power.
Coming off of a stellar 2017 for the wind power industry, Wind Power 2018 is all about carrying that momentum forward.
This paper provides an overview of the more common position sensor options and references actual case studies to illustrate the diverse solutions available and the reasons behind some of the decisions. Three cases are used to illustrate the needs of different applications leading to the choice of a particular type of position sensor. The cases reviewed include a gantry crane, wind turbine and aerial cable car.
Since our last appearance in this space we've attended the Paris Air Show and met with companies involved in oil production, hydraulic fracturing and wind turbine towers and components. As an investment analyst I am always seeking to help my clients anticipate change in order to manage risk and capture alpha (positive returns relative to market). But as a regular columnist for Power Transmission Engineering, I also seek insights that can help your organization do the same. Here is what we've found...
This paper presents an evaluation of measurements being taken on a 750 kW wind turbine gearbox being tested by the National Renewable Energy Laboratory (NREL). High-speed stage gears and bearings have been identified as critical components of the gearbox; during gearbox testing, these components were instrumented and tests were developed to evaluate loads on high-speed tapered roller bearings (TRBs). In this paper an advanced finite element-based contact modeling procedure has been applied to model the high-speed stage with the bearings fully modeled in order to evaluate strain levels. A major conclusion is that the strains of the slotted grooves are at such a level that they have acceptable signal-to-noise levels. This was verified by the results of the initial experiments presented here.
Despite posting its slowest quarter since early 2007, AWEA remains optimistic that the wind industry can and will work successfully with the revolving doors in Washington.
The Magnetic Gearing and Turbine Corp. (MGT), founded by Australian inventor Andrew French in 2000, manufactures injection molded gears and couplings based entirely on magnetic technology. The repulsive magnetic forces are used to transmit power without losing any energy, and drive shafts rotate completely independently of each other.
The complete Product News section from the February 2010 issue of Power Transmission Engineering.
In the late 1940s, the U.S. auto industry started an exciting experiment and spent decades on it. One result came in '63, when the Turbine was introduced by Chrysler Corp., now a part of Fiat Chrysler Automobiles (FCA). In appearance, the two-door, four-passenger car looked like a regular car, but it wasnââ‚¬â„¢t. Under its sleek shell, the car had a jet engine.
A practical guide to adopting digital technology in wind energy applications.
Wind turbine gearboxes are subjected to a wide variety of operating conditions, some of which may push the bearings beyond their limits. Damage may be done to the bearings, resulting in a specific premature failure mode known as white etching cracks (WEC), sometimes called brittle, short-life, early, abnormal or white structured flaking (WSF). Measures to make the bearings more robust in these operating conditions are discussed in this article.
Wind is the talk of the town. It has become especially relevant to the power transmission community where bearings, gears, couplings, motors and gearboxes are providing the equipment for this thriving alternative energy industry. It comes as no surprise that the Windpower 2009 Conference and Exhibition, arriving in Chicago from May 4â“7, will be the largest gathering of wind energy professionals and technologies to date.
Calling on engineers and maintenance power plant personnel, industrial users of low- and medium-voltage motors and generators and motor repair shop staff...
The first trade show dedicated specifically to small and community wind took place in Detroit, Michigan November 3â“5. Denise Bode, American Wind Energy Association (AWEA) CEO, was pleased with the turnout for the event and the increasing potential for this segment of the wind energy market.
Does the U.S. renewable energy solution lie offshore? An update on the status of offshore wind projects.
After getting positive feedback on changes made to the show last year, AWEA Wind Power is doubling down and taking their ongoing transformation even further.
A look at recent installations, plus interviews with some wind industry insiders.
News Items About wind turbine
1 Zero Max Expands Wind Turbine Couplings (February 3, 2011)
Zero-Max, Inc. recently announced the expansion of its wind turbine couplings covering a broad range of wind turbine applications. Z...
2 ZF Opens First U.S. Plant for Wind Turbine Gearboxes (October 4, 2011)
ZF Friedrichshafen AG has opened a plant for the production of wind turbine gearboxes in Gainesville near Atlanta, Georgia. As of 2012, t...
3 Mayr Provides Maintenance-Free Brakes for Wind Turbines (February 21, 2012)
The application of safety brakes in wind turbine pitch drives requires extremely conscientious dimensioning and precise knowledge of brak...
4 Romax and Hansen Sign Agreement for Wind Turbine Services (September 24, 2010)
Romax Technology, a drivetrain and gearbox solutions specialist, and Hansen Transmissions International NV, a wind turbine gearbox design...
5 Modular Bearing System Standardizes Wind Turbine Applications (June 7, 2010)
Austrian bearing manufacturer NKE introduces modular bearing systems for planetary gears in wind turbine gearboxes that offer the advan...
6 Moventas Receives Order for Mass Deliveries of Wind Turbine Gears to Acciona (January 14, 2006)
Moventas signed a supply agreement for substantial deliveries of wind turbine gearbo...
7 SKFs New Cylindrical Roller Bearings Extend Wind Turbine Gearbox Life (April 11, 2006)
New SKF high-capacity cylindrical roller bearings for wind turbine gearboxes have been engineered to promote longer gearbox service life...
8 Moventas Launches Wind Turbine Condition Management System (May 24, 2007)
Moventas introduced its latest wind turbine condition management system at Hannover Messe 2007. The system focuses on the gearbox and a...
9 Renishaw Offers Encoders for Wind Turbine Bearings (December 20, 2012)
Blade pitch adjustment is one of the most critical functions of wind turbine operation, and the giant bearings in the adjustment mechanis...
10 Floating Wind Turbine Tested in United States (December 18, 2012)
The first ever floating wind turbine in the United States is now in the process of being tested by engineers from the University of Mai...
11 Zero-Max Wind Turbine Couplings Easily Handle Torque Spikes and Misalignment (October 10, 2016)
Zero-Max Wind Turbine Couplings are now available as an upgrade replacement for existing wind turbines and for OEM applications.Proven an...
12 Zero-Max Wind Turbine Torque Limiters Protect Against Peak Loads (October 17, 2016)
Zero-Max Wind Turbine Torque Limiters protect wind turbine gearboxes and generators against peak loads, reversing torques, and grid short...
13 Bonfiglioli and Schaeffler Collaborate on Wind Turbine Gear Drives (July 30, 2019)
A compact Industry 4.0 solution package for wind turbine azimuth drives is the result of a long-term development partnership between Bo...
14 Drive and Control Technology for Wind Turbines Brochure Published by Bosch Rexroth (April 27, 2009)
Rexroth announces a new brochure, Drive & Control Technology for Wind Turbines, highlighting its industrial hydraulics technology dev...
15 Sulzer Extends Wind Turbine Reliability (July 30, 2019)
Electricity is essential to everyday modern life. Turning on the lights, watching television, getting a cold drink out of a refrigerator ...
16 GE Energy Partners with Chinese Co. To Develop Wind Turbine Gearboxes (April 22, 2006)
GE Energy and Nanjing High Speed & Accurate Gear Company (NGC) have agreed to jointly develop gearboxes for GE's 1.5-megawatt wind tu...
17 Sulzer Solves Wind Turbine Maintenance Challenges (February 26, 2020)
In most cases, when a wind farm is built and handed over to the operator there is a contract that requires the operator to use the origin...
18 IQwind and Guascor Partner to Commercialize Variable IQGear Technology for Wind Turbines (September 10, 2009)
IQwind and Guascor announced that they will partner to commercialize and bring to market the IQGear, a high efficiency variable gearbox f...
19 Moog Introduces New Pitch Control Slip Ring for Wind Turbines (October 20, 2016)
Moog Components Group Limited, a division of Moog Inc., has announced the introduction of a new pitch control slip ring. The EPA3 slip ri...
20 AGMA Releases Standard for Wind Turbine Gearboxes (March 20, 2020)
The AGMA Technical Division is pleased to announce the publication of the following new AGMA publication: ANSI/AGMA 6006-B20, Standard fo...
21 Bosch Rexroth Optimizes Wind Turbine Gearboxes (August 27, 2012)
The competitive pressure as well as the pricing pressure in the wind energy industry is mounting. If the sector wants to continue to expa...
22 Innovative Drivetrain Testing for Wind Turbines Nears Completion (April 11, 2016)
Wind energy researchers have entered the final phase of testing a next-generation drivetrain—made up of the components of a wind tu...
23 SKF Develops Wind Turbine Inspection System (March 23, 2016)
SKF has developed the SKF Enlight mobile and cloud based data collection, analysis and support system to suit the needs of the global win...
24 Renk AG Offers Intelligent Solutions for Wind Turbines (October 12, 2018)
At WindEnergy 2018 in Hamburg, Renk AG presented two product innovations with the EQ-Gear gearbox and the EQ-Flex couplings. The gearbo...