wind turbine Articles
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Small wind turbine emulator with armature controlled separately excited DC motor via analogue electronic circuit
In this paper, a small wind turbine emulator (WTE) using separately excited DC motor is modelled, designed, simulated, implemented and tested. A 1 HP separately excited DC motor is used to emulate the characteristics of the rotor of small wind turbine. The DC motor is driven by a thyristor bridge with closed–loop cascaded PI controller for armature control. A separately excited DC generator with ...
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Research of modelling and nonlinear dynamic analysis for drive system of wind turbine generator
Using the Lagrange principle, the nonlinear dynamical equation of wind turbine generator drive system is presented, which considers nonlinear stiffness of the drive system. The stability of autonomous system is analysed by the Jacobian matrix. The stability of wind turbine generator drive system is analysed by using bifurcation and chaos theories. Finally, a numerical method is employed to ...
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Mitsubishi to open new UK wind turbine factory
Mitsubishi joins Siemens, General Electric and Gamesa in their plans to opening new UK wind turbine factories following the announcement of £60m ...
By Vital Energi
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VENSYS Controls Rotor Position on Wind Turbines with TURCK uprox®+ Sensors
VENSYS wind turbines, built with TURCK uprox®+ Sensors, allow for sufficient wind production even in low wind ...
By Turck Inc.
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The VGOT Darrieus wind turbine
We present the actual state of development of a non-conventional new vertical-axis wind turbine. The concepts introduced here involve the constructive aspects of variable-geometry oval-trajectory (VGOT) Darrieus wind turbines. The key feature of a VGOT machine is that each blade slides over rails mounted on a wagon instead of rotating around a central vertical axis. Each wagon contains its own ...
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Evolution of collaborative innovation network in China's wind turbine manufacturing industry
This paper studies the 'catching–up' process of China's emerging wind turbine manufacturing ecosystem, and analyses the dynamics of the shifting collaborative innovation network for the period 1980–2011. We have focused on the leading wind turbine manufacturers [i.e., manufacturers of entire wind turbine system integrators (EWSIs)], as well as manufacturers of the turbines' sub–ecosystems (i.e., ...
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Ultrasonic wind sensor for smart wind turbine control - Polaris / USA - Case Study
The American wind turbine manufacturer Polaris trusts for their wind turbine applications anemometers from Lufft. Over 50 wind turbines have already been equipped with our ultrasonic anemometers Ventus-UMB and V200A-UMB. Crucial in these applications is a high degree of precision and a long, maintenance-free useful life. In addition, controlling of the turbine complex requires a high frequency of ...
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Hybrid tower
Using the Torque Wind Turbine in combination with solar and a battery pack could give the opportunity to build a smart grid. This way houses, companies, farms and small villages could become self-supporting in energy and create a smart grid using Internet of Things applications and 5G telecom options directly from the Torque Wind Turbine tower. Also the battery of electric cars for electricity ...
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Data–driven modelling, control, and fault detection of wind turbine systems
In this paper, data–driven system modelling, control, and fault detection technique for wind turbine systems are researched. The developed algorithm is to recursively update system parameters using predictor–based system identification (SID) technique. Updated system parameters are used to design subspace predictive controller for wind turbine systems with constraint on pitch angle and generator ...
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The effect of ocean waves on offshore wind turbines
The Ocean has a varying surface roughness where the roughness length is determined by the characteristics of the waves. In this paper, a method is established where the roughness length of the ocean is calculated from the wind speed and the fetch length. The fetch length depends on the wind direction and a case study is performed for a wind turbine exposed to wind blowing in two opposite ...
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The largest wind turbine in Sweden
Vattenfall, the Swedish energy company, started commercial operation of a wind turbine representing the very last technology developed by the manufacturer Vestas, at the Näsudden wind farm on Gotland island in the Baltic sea. ...
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Analysis of wind power in Danish electricity supply, 2005-2007
It is frequently said that wind power covers about 20% of electricity consumption in Denmark. The correct statement is that production of electricity by Danish wind turbines corresponds to about 20% of electricity consumption. A considerable fraction of the energy produced by wind turbines is exported to neighbouring countries and therefore is not used in Denmark. But how does one know that the ...
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New future for small and medium size wind turbines in Belgium!
‘More wind turbines in a shorter period of time’, those were the main principles in the ‘Windpower 2020’ wind plan by Flemish Minister of Energy Bart Tommelein and his colleague Joke Schauvliege from the department ‘Environment (CD&V)’. Steps have already been taken to remove a number of obstacles for the construction of wind turbines. Minister Tommelein ...
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Suzlon, Vestas announce new turbine orders
Suzlon Energy (Pune, India) and Vestas Wind Systems A/S (Randers, Denmark) have announced new orders for wind turbines and associated equipment, in Vestas’ case the first European orders for its new V112 3-MW model. Vestas received an order from Germany’s Prokon to supply 17 of the V112 3-MW units for installation at the Krackow project in Germany’s Mecklenburg-Vorpommern state. ...
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Iowa Lakes
Location: Estherville, IA Project Start Date: August 2009 Element Markets is helping Iowa Lakes Community College pay for its own wind turbine and teach its students about advanced clean energy. Under a long-term agreement, the college sells us all of the RECs generated by its 1.65 MW wind turbine. We worked with college officials to register the facility in the MRETS tracking system, which ...
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Wind energy today and in the 21st century
Wind energy is the most promising of the new renewable sources of energy. By the end of 1998, the global installed capacity of modern grid connected wind turbines was some 10,000 MW, and the growth rates of installations worldwide are 30%-40% annually. The cost of wind energy was reduced by 30% between 1991 and 1997 and the cost reduction is foreseen to continue. This article reviews the reasons ...
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Maintenance Manager to control operation and maintenance of offshore wind farms
Maintenance of wind farms is of increasing importance. Especially in remote areas, where logistics and accessibility are restricted, costs of preventive as well as corrective maintenance form a substantial part of the costs of electricity. The importance of a tool that assists in feedback to the design, failure logging, configuration control and maintenance planning is evident. This paper ...
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Life cycle assessment of a 150 MW offshore wind turbine farm at Nysted/Roedsand, Denmark
The purpose of this life cycle assessment (LCA) was to illuminate and describe the potential environmental impacts caused by an offshore wind turbine farm (WTF) throughout its lifetime and use this knowledge in the planning and improvement of future WTFs. The LCA was based on experience from the LCA on Danish electricity and district heating [1] as well as the offshore WTF project at ...
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Air concentrating nozzles: a promising option for wind turbines
Although the use of wind turbines has become necessary in many parts of the world, the actual developments in wind turbines do not concern countries where the average wind speeds are low. The paper introduces a new vertical axis wind rotor using a convergent nozzle for low wind speed areas. This paper brings a detailed theoretical and practical study of air concentrating nozzle and the optimum ...
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Pilot Project 1 Case Study
The project was conducted at Rivière-au-Renard in November 2016 on a 2.25 MVA power transformer installed on a 7’ x 7’ concrete base. This is an experimental wind turbine for the Gaspe Wind Farm Technical Centre (TechnoCentre Éolien de Gaspé). The collaboration of TechnoCentre Éolien staff was essential and greatly ...
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