wind turbine developer Articles

  • Wind Energy Production Estimates: Moving Beyond Time Averages

    No need to be a statistician to see that averages are often useful to compare different things. And yet, they often fall short as a true measure of performance. For instance, we use averages to compare the current weather against the climate normals or to get a sense of how our favorite sport team or player is doing. Team (player) statistics are a concise way of combining the scores from many ...


    By AWS Truepower, LLC

  • 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. ...

  • Exergy analysis of a wind turbine

    The present paper deals with a developed and improved approach for exergy analysis of the wind. Based on this model, a typical wind turbine model (Bergey Excel-S) is assumed to be installed in two cities in Iran. The results show that, with regard to the annual average wind data, if the wind turbine is installed in Tehran, by varying the cut in, rated and furling speeds from 3.1, 13.8 and 15.6 ...


    By Inderscience Publishers

  • 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 ...


    By Inderscience Publishers

  • Wind turbine controlling of the future

    Higher, more robust, more reliable: Parallel to the growing requirements for wind turbines, the requirements for monitoring sensors grow as well. But how can wind sensor manufacturers fulfil these wishes? And how should a future wind sensors look like? After analysing the current conditions and trends on the wind energy market, our CEO Klaus Hirzel compiled a wish list for future wind sensors. ...

  • Reducing avian collisions with wind turbines

    Wind is an important renewable energy source for Europe. The wind power capacity installed in 2014 could produce enough electricity to meet over 10% of the EU’s electricity consumption. However, wind power structures can also be harmful to birds, which can collide with turbines. This study assessed methods of reducing avian collisions with wind turbines and makes several practical ...

  • Climate change drives wind turbines in China: case study of market based wind power development

    This paper aims at quantifying the impact of government policy and clean development mechanism (CDM) on wind power development in China. Firstly we review the background of Chinese wind power development and policy, as well as literature of climate change and CDM. We then present methodology, scenarios and data of a case study for the development of a large-scale grid-connected wind farm. We ...


    By Inderscience Publishers

  • 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 ...


    By Inderscience Publishers

  • Can Wind Turbines Make You Sick?

    Wind farms have become one of the major energy generation methods in the present world. They can be found in many countries in the world in large scale. However, the development of wind farms has given life to many issues as well. Health for example holds a prominent place out of them. From the recent researches, it has been identified that wind farms have created many health issues for ...


    By Stanford Magnets

  • Deep research on China wind turbine blade industry

    It was a professional and depth research report on China Wind Turbine Blade industry. Since 2009, the price of China's wind turbine blade has decreased substantially, which is a big challenge for these new entrants and existing wind turbine blade manufacturers. On the development trends of current domestic wind power equipment market, supply and demand tension has been greatly eased with the ...


  • Dynamic validated model of a DFIG wind turbine

    This paper presents the development and qualitative validation of a doubly-fed induction generator (DFIG) wind turbine model that is represented in terms of behaviour equations of each of the subsystems, mainly the turbine rotor, the drive train, the induction generator, the power converters and associated control systems and a protection system. Simulation results obtained from the models are ...


    By Inderscience Publishers

  • Hansen transmissions - wind turbine gearbox testing with PULSE

    The Wind Energy Market Wind energy is one of the fastest growing power generation technologies. The level of annual installed capacity has grown at an average rate of 27.6% p.a. for the past five years. High fuel prices and increased focus on global warming and renewable energy resources have contrib- uted to an increased investment in the development of wind technology over the last three ...

  • CU-Boulder leading study of wind turbine wakes

    While wind turbines primarily are a source of renewable energy, they also produce wakes of invisible ripples that can affect the atmosphere and influence wind turbines downstream -- an issue being researched in a newly launched study led by the University of Colorado Boulder's Julie Lundquist, assistant professor in the atmospheric and oceanic sciences department. The study, called the Turbine ...


  • Case Study: Developing a retrofit solution for Mitsubishi turbines

    RNRG’s product development team is always looking for ways to make customers’ lives easier. Our favorite type of design challenge is when we we get to collaborate directly with customers to solve an immediate issue. We recently embarked on ...


    By Renewable NRG Systems

  • Prospect of offshore wind energy development in Japan

    In Japan, the cumulative capacity of wind turbine generation systems on land has increased steadily in recent years. To install a large number of wind turbines has inherent problems such as shortage of suitable land, and inadequate infrastructure such as power cables and roads. The necessity for development of offshore wind turbine generation systems has been recognised based on the above ...


    By Inderscience Publishers

  • Logistics Planning in Offshore Wind Farm Development

    “In the offshore wind power industry, logistics planning is the dominant driver to avoiding costly mistakes,” highlighted Jim Lanard, President, Offshore Wind Development Coalition. The technologies needed to set up offshore wind farms are available in the US, and what is needed the most is a focus on logistics that would make them happen efficiently, he added.  A speaker at the ...


    By Marcus Evans

  • Innovation risk slows offshore wind foundation development

    As offshore wind technology develops ever more gigantic machines further from shore into deeper waters, it is common wisdom that new foundation technologies are needed. But are they? Monopile, and some jacket foundations, still dominate the offshore wind market in commercial operation. Prototype floating foundations are performing well in demo or pilot projects, but scaling up is only ...

  • Offshore Wind Development Picking Up Pace

    Wind power is the world’s leading source of renewable electricity, excluding hydropower, with 238,000 megawatts of capacity installed at the start of 2012. Thus far, almost all of this wind power has been tapped on land; worldwide just 4,600 megawatts of offshore wind farms were operating as of mid-2012. Offshore wind capacity is growing quickly, however, expanding nearly six-fold ...


    By Earth Policy Institute

  • New Generation Small Wind Turbines for Remote Power Systems and Grid Connection

    In this collaborative activity Partners will undertake research and develop economically viable, reliable small wind turbines for remote power systems located away from the electricity grid as well as for connection into the grid. This project will study small wind turbine operation in a wide range of situations, with the goals of improving design, developing safety methodologies and reducing ...

  • Finite element analysis of turbine generator rotor winding shorted turns

    Abstract Online magnetic flux monitoring via permanently installed air-gap flux probes is a well- established technology to determine the presence of shorted turns in a turbine generator rotor winding. Flux measurements are normally performed using flux probes installed in the machine air gap (on a stator wedge) and connected to portable or permanently installed instruments. In this ...

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