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Manufacturers of wind turbines

A case study and an applicatıon of IEC61400-12-1:2017

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İskender Kökey, Z. Haktan Karadeniz, Sercan Acarer, Alpaslan Turgut

General summary

Due to the increasing demand of energy and rapidly developed wind turbines technology, rotor swept areas and hub heights of horizontal axis wind turbines (HAWT) are getting bigger. As a result of development in the wind industry, each HAWT requires more land space between each other to decrease overall wake losses of wind power plants (WPPs) which necessarily increases the land necessity for WPPs. Each HAWT must be spaced 4-6 rotor diameters away in the cross-wind direction and 8 – 10 rotor diameters away in the down-wind direction to its neighbor HAWT for minimizing wake effects and maximizing WPP performance. Required WPP land sizes are increasing with the increasing of each individual turbine power and it ends up with the 3 – 5 W power output for each meter square of WPP site for HAWTs included WPPs. It is known that footprint-power-density can be increased dramatically by using vertical axis wind turbines (VAWTs) working in groups and pairs instead of HAWTs. We present an investigation of energy interaction of VAWTs working in pairs as a case study in a test site located in Izmir City of Turkey by the following suggestions of IEC 61400-12-1:2017 standard. It is aimed to present a case study of an innovative solution for new age WPPs.

Method

A near-shore site located in Çaltılıdere region of İzmir City of Turkey is selected for the power performance measurements. Site characteristics are defined by employing more than a year-long wind measurements at 60m. height in this site. Two H-Darrieus type VAWTs both having a 2.6m rotor diameter, 2m rotor height, 7.15m hub height, and 0.5 kW output power, are used for field study. The effect of the distance between the turbines on power performance of VAWTs will be performed by the suggestion of Annex H of IEC61400-12-1:2017 standard. Therefore, the wind measurements will be repeated at a hub-height-station. Firstly, the field study of a stand-alone HDarrieus type VAWT will be done then, two VAWTs working in pairs will be investigated.

Results

Up until now, results show that test site has 4,53 m/s mean wind speed and 0.94 m/s mean turbulence intensity at 7,15 m height. This relatively turbulenced, near-shore site promises a wide range of wind speed with a different rate of turbulence intensity during the experiments. The first phase of the study includes power performance measurement of a stand-alone HDarrieus type VAWT. It is expected to receive valuable results for a better understanding of wake effect of stand-alone VAWT and energy interaction of VAWTs working in pairs in the results of ongoing experiments. Another expected result of the ongoing study until the conference is demonstrating the more efficient energy converting capability of VAWTs then HAWTs under the highly turbulenced wind conditions.

Conclusions

One of the most important question for the large-scale, HAWTs included WPPs is land acquisition. It’s getting become a serious problem to find big enough land for large-scale WPPs to siting turbines with the minimum energy interaction to avoid wake losses. On the other hand, VAWTs promise much more efficient WPPs with closely-located siting strategy due to their aerodynamic behavior of positively effected by the wake of its own neighbor. Whats more, using small-scale VAWTs at the inside of the operational wind farms is also an interesting concept for increasing footprint power density of existing WPPs and it called “bush and tree” concept. VAWTs, specially Darieus types working in pairs, are promising a bright future for the wind industry.

Learning objectives

VAWTs are one of the most promising topics for the wind industry in the past decade due to the importance of small-scale wind turbines and the necessity of effectively used land spaces for large-scale WPPs. There is a very limited case study in both literature and industrial applications to define energy interaction and energy conversion mechanism of VAWTs clearly. This study includes valuable experimental results of the power performance measurement of a stand-alone, Darieus type VAWT and contributes industrial knowledge. On the other hand, the study includes a unique application of a newly updated international standard of IEC61400-12-1:2017. Attended delegates will have the opportunity to follow up a case study and step-by-step application of the newly updated industrial standard.

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Maintenance

Fluid Solutions Introducing Fill-For-Life Capable Wind Turbine Gear Oils

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By Mike Blumenfeld, Industrial Lubricant Development and Wind Industry Specialist, ExxonMobil Product Solutions 

By Mike Blumenfeld, Industrial Lubricant Development and Wind Industry Specialist, ExxonMobil Product Solutions 

Recent supply uncertainties have meant that the pressure on wind farm operators to perform – and make the right choices – has never been greater. There’s been much talk about bigger turbines and blade recycling, but the smaller details matter too. 

Every component that moves in a wind turbine requires a lubricant to reduce friction, remove heat and prevent wear. Despite this, and the fact that operations and maintenance costs account for 18-26% of the lifetime cost of wind energy, the role played by high-performance oils and greases can sometimes be underplayed. 

The truth is that, throughout its history, advanced lubricants have been a key problem solver for the wind power sector. This is particularly true when it comes to one of the main drivers of wind turbine maintenance: the gearbox.  

A history of problem-solving 

In the 1990s, turbine and gearbox OEMs looked to lubricant formulators to help them address the problem of micropitting which was curtailing gear life. In the early 2000s, as installations in cold climates became more common, focus shifted to the need for high-viscosity index basestocks with enhanced low temperature fluidity. This heralded the invention of metallocene catalyzed PAO base stocks, or mPAO, which remain the industry standard today. 

In the 2010s, to reduce bearing failures, understanding and preventing white etching cracking (WEC) became a priority, leading to the development of Mobil SHC™ Gear 320 WT – the first lubricant certified by DNV to not contribute to the formation of WEC. 

These advancements have paved the way for better-performing, longer-lasting turbines. The next frontier lies in pushing these innovations further, towards ‘fill-for-life technology’ – an innovation that could save the wind industry billions of dollars over the next 30 years. And is already here.

Making lifetime lubrication a reality 

Over six years of intensive research, accelerated life testing, and optimisation have gone into developing a gear oil designed to last the lifetime of a wind turbine. The result is Mobil SHC™ Gear 320 WindPower, a gear oil that builds on a legacy of innovation in the field. 

Mobil SHC Gear 320 WindPower is an advanced formulation, engineered with advanced base oils and carefully selected additives to provide strong resistance to white etching cracks (WEC), micropitting, and scuffing. 

To ensure optimum performance for the lifetime of a wind turbine, ExxonMobil will supply operators with ongoing lubrication management services – advising on and supplying the appropriate top treat regime. Mobil Xtra™ WT Series top treat solutions are engineered to help extend oil life in wind turbine gearboxes, allowing customers to protect their investment while avoiding challenging oil change outs.

DNV-certified to achieve more with less 

Mobil SHC Gear 320 WindPower and Mobil Xtra™ EP WT top treat have been certified by DNV to deliver outstanding performance and protection for the lifetime of a wind turbine (DE-DNV-SE-0074-10516-1) and is now available to WT OEMs for specifications testing ahead of full commercialisation. 

Keeping a single turbine in operation can require up to 1,400 litres of lubricant. As such, this innovation will not only help reduce operational and maintenance costs. It also has the potential to support the wind industry’s sustainability ambitions by reducing oil usage and waste.

By offering lifetime oil drain interval (ODI) capability, the product can deliver an estimated 80% reduction in Global Warming Potential (GWP) when compared to a product with an ODI of 5 years

Collaborative innovation 

Today, as the demand for long drain intervals and reliable performance in extreme conditions continues to grow, the lubricants supporting the system must be able to handle larger loads from larger turbines in smaller gearboxes. And handle them for longer. 

A key driver of innovations in our Mobil™ brand is our close collaboration with industry bodies and leading OEMs to understand equipment trends and requirements, consult on lubrication system designs, and troubleshoot field lubrication challenges.  

Being an APQP4Wind Company Member, meanwhile, is an important part of our commitment to standardised quality and process simplification, guaranteeing consistent standards across the wind industry. 

Tailored solutions 

The Mobil range of high-performance synthetic oils and greases is formulated to protect critical components and enhance wind turbine availability and is supported by extensive equipment builder approvals. This explains why Mobil products are used in approx. 1 in every 4 wind turbines worldwide

To help wind customers achieve peak productivity, we also offer a full suite of services designed to help optimize equipment performance and oil drain intervals. These include Wind Turbine Gearbox Flush and Fill, start-up and cleanliness guidance, as well as Mobil Lubricant Analysis, with a program specifically tailored to wind turbine applications. 

These solutions are complemented with hands-on guidance and application expertise from the company’s team of skilled engineers, dedicated to helping wind turbine operators reach new levels of safety and environmental care, as well as productivity. 

To learn more about Mobil’s wind energy offer, visit mobil.eu/wind  

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Manufacturers of wind turbines

SoyutWind: Powering Tomorrow from Today The Wind Turbine Manufacturer of Türkiye

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SoyutWind: Powering Tomorrow from Today The Wind Turbine Manufacturer of Türkiye

In the heart of Türkiye, a revolution is spinning. Since 2000, SoyutWind, born from the legacy of Çolak Holding, has harnessed the invisible and unleashed the incredible.

We’re not just building turbines; we’re engineering the future.

At our factory in Ankara-TÜRKİYE, spanning 135,000 square meters with 15,000 square meters of indoor space, we work diligently every day alongside our skilled engineers and manufacturing team, knowing that we are shaping the future.

Our mission is to make renewable energy sources more accessible and effective, guided by our commitment to sustainable total quality management.

We continuously develop and rigorously test our wind turbine technologies to meet,  exceeding the highest industry standards. Our international certifications reflect our unwavering commitment to sustainability and quality.

Our products, ranging from grid-connected wind turbines to residential battery-powered wind turbines and the Soyut WindMill agricultural water pump, are all developed with an unwavering commitment to innovation.

With our 50 years of industrial heritage, 25 years of wind turbine manufacturing experience, robust financial foundation, skilled and experienced team, an extensive domestic and international service network, and exceptional production and engineering capabilities, we proudly lead the way with groundbreaking achievements.

We face the future with confidence.

• Pioneers of direct drive wind turbines up to 1 MW – a first in Türkiye and the region

• Turbine capacity reaching up to 2.5 MW

• 50 years of industrial mastery

• 25 years of relentless wind energy innovation

Our sprawling 135,000-square-meter facility isn’t just a factory. It’s where dreams take flight.

SoyutWind stands as Türkiye’s premier local wind turbine manufacturer, holding the distinction of being the country’s first and only. Our international certifications attest to our world-class standards, while our expansive network spans nations, empowering communities. Our arsenal of innovation includes:

1.Grid-connected titans of power

2.Residential turbines bringing freedom to homes

3.Soyut WindMill – revolutionizing agriculture, one pump at a time

But our true power? It’s not in our machines; it’s in our people.

A team is driven not by the wind but by passion. By vision. By the unyielding belief that we can change the world, one turbine at a time.

With every rotation, we’re not just generating electricity. We’re powering dreams. Energizing economies. Breathing life into a sustainable future.

From the hills of Anatolia to the far corners of the globe, SoyutWind isn’t just riding the winds of change; we’re creating them.

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Manufacturers of wind turbines

Vestas received two orders of 45 MW and 63 MW from Turkey in June

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Vestas received two orders of 45 MW and 63 MW from Turkey in June

Vestas wins 63 MW order in Türkiye

Vestas has received a 63 MW order from Kangal Energy, Is Portföy Infrastructure VCIF and Is Portfoy Renewable Energy VCIF to extend the five existing wind parks of Kangal, Bereketli, Akyurt, Karaçayir, Konakpinar wind parks. They are all located in Sivas and Tokat, Türkiye.

The contract includes the supply and installation of a total of 12 V150-4.5 MW wind turbines and two V136-4.5 MW wind turbines, as well as a 10-year Active Output Management 4000 (AOM 4000) service agreement.

“I would like to thank Kangal Energy, Is Portföy Infrastructure VCIF and Is Portfoy Renewable energy VCIF for their trust in Vestas’ 4 MW platform. We are glad to see how the versatility of our portfolio continues to contribute to the expansion of wind energy in Türkiye”, says Head of Vestas Türkiye, Levent Ishak.”

Turbine delivery is scheduled for the first half of 2025, while commissioning is expected to take place in the second half of 2025.

Vestas installed Türkiye’s first wind turbine in 1984 and has since then delivered over 2 GW of wind capacity in the country.

Vestas wins 45 MW order in Türkiye

Vestas has received a 45 MW order in Türkiye. The contract includes the supply and installation of 10 V150-4.5 MW wind turbines as well as a 15-year Active Output Management 4000 (AOM 4000) service agreement.

“We believe that the reliability and versatility of our portfolio will continue to play a paramount role in Türkiye’s energy transition”, says Vestas Head of Türkiye, Levent Ishak.

Turbine delivery is scheduled for the first half of 2025, while commissioning is expected to take place in the second half of 2025.

Vestas installed Türkiye’s first wind turbine in 1984 and has since then delivered over 2 GW of wind capacity in the country.

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