Renewable Energy
will allow for increased efficiency of our plants, as we will have a more adequate technology to our winds, and reduced investments, which are key for us to maintain our leadership position in the increasingly competitive wind market,” he added. Te wind turbines will be manufactured at Alstom’s unit at Camaçari in the state of Bahia. Opened in November 2011, the plant will see its manufacturing capacity grow from 300-600MW/y of generating plant as the project gathers pace. Also in South America, Nordex USA has concluded
an agreement with Usinas y Trasmisiones Eléctricas (UTE), Uruguay’s state power company, for the sale of 28 of its N117/2400 wind turbines for the Juan Pablo Terra wind farm. Nordex, a leading global manufacturer of utility scale wind turbines, will be responsible for delivery, installation and commissioning and for ongoing maintenance for a minimum of 10 years under a premium service contract.
Te site, on the border with Brazil, is located a few
miles from the city of Artigas, in the north of Uruguay, about 370 miles from Montevideo, the capital city. Tis will be largest wind farm owned by UTE and represents the country’s commitment to the growth of renewable energy. Delivery of turbines will begin next February, with project completion due the following June.
Te newest addition to Nordex’ established multi- megawatt fleet, the N117/2400 is designed specifically for light wind regimes, maximising the power produced at sites where wind resources were previously considered unsuitable for wind energy (Fig. 1). Te turbines, on 91 metre towers, are particularly well- suited to the site. Each of the 2.4MW turbines will be capable of powering about 3500 Uruguayan homes. “We are honoured that UTE has chosen Nordex and our technology for this important project. Uruguay’s first wind turbine was a Nordex N27/250 installed in 2000 for UTE as customer and still
running successfully today,” noted Ralf Sigrist, president and ceo of Nordex USA. “Our company has always been recognised for its engineering expertise and leadership and this is exemplified by the changes in size, productivity and competitiveness that we have achieved over the past decade.” Nordex has also received its first contract for the
delivery and installation of a wind farm complete with Generation Delta turbines – from Raahen Tuulienergia in Finland.
Te two N117/3000 turbines, which will be fabricated and installed this year, each have an output of 3MW.
Te site is located in the port area of the Northern
Finnish town of Raahe which is characterised by wind speeds of over 8 metres/s. Tis calls for turbines able to generate the greatest possible yield in medium wind conditions. Nordex is assembling one turbine on a 91-metre and the other on a 120-metre steel tube tower. Tanks to the large rotor sweep of the N117/3000, its nominal output and the tall towers, the wind farm will achieve an annual yield of around 20 million kWh of clean electricity, equivalent to a capacity factor of 38 per cent. As the site experiences periods of extremely low temperatures of down to -30°C, Nordex will be supplying cold-climate versions of the turbine. In addition, the sound power produced by the turbines will not exceed 106 dB. “Tis contract underscores the great confidence which our customers have in our reliable technology and in the new higher yields which we have achieved in strong and medium-wind locations with Generation Delta,” says Nordex management board member Lars Bondo Krogsgaard. Heikki Jäälinoja, ceo of Raahen Tuulienergia and
Raahen Energia said, “Nordex’ global record for reliability, efficiency and service has been crucial for our decision to choose the N117/3000. Tis turbine is a perfect match for the wind regime at the Raahe
Hydraulic drive train tests get underway M
itsubishi Heavy Industries (MHI) has commenced test operation at its Yokohama dockyard and
machinery works of a large-scale wind power generation system that adopts a hydraulic drive train in place of the earlier gear-driven system. The test operation is a part of the
project launched in September last year to develop a hydraulic drive train system for offshore wind turbines. The effort is supported by Japan’s New Energy and Industrial Technology Development Organisation (NEDO). According to MHI, the event marks
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a world’s first operation of a large- scale hydraulic drive train type wind power generation system applying the company’s Digital Displacement Transmission technology. Leveraging the test results, MHI will accelerate its development of an offshore wind power generation system in the 7MW class, with installation and operation slated to begin at Hunterston, in the UK, this year. A mass-produced commercial model will be targeted for market launch in 2015. The system recently inaugurated
in Yokohama is based on an existing MWT100 gear-driven wind power
generation system that was retrofitted with the new hydraulic drive train. The retrofitting involved replacement of the step-up gear – which functioned as the power transmission system to increase the rotation speed of the rotor (10rpm) to the rotation speed of the generator (1000rpm) – by the Digital Displacement Transmission hydraulic drive train. MHI developed the new hydraulic
drive train, with support from NEDO, based on the digitally controlled hydraulic technologies of Artemis Intelligent Power, a UK-based venture company that it acquired in 2010. ●
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