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'High-efficiency classic' takes on PMG
WORLDWIDE: Emerson's European subsidiary Leroy Somer (LS) recently introduced a new generator design to compete with the permanent-magnet generator (PMG) - a copper-only classic synchronous generator ...
Towers - the next area for innovation?
WORLDWIDE: Taller wind-turbine towers are becoming increasingly important as the best wind sites are taken up in a growing number of markets. A move to locations with lower wind speeds is pushing some...
LM unveils 73.5m cutting-edge blade
WORLDWIDE: LM Wind Power's 73.5-metre blade has been developed for Alstom's 6MW Haliade direct-drive offshore turbine.
Nordex installs first N117/2400 model
WORLDWIDE: Nine months after unveiling a new 2.4MW N117/2400 wind turbine with a record 117-metre rotor diameter at the EWEA 2011 event in Brussels, Nordex has installed the first unit in northern Ger...
Windpower Monthly's round-up of 2011
As Windpower Monthly winds down for the end-of-year holidays, we leave you with a round-up of some of 2011's best read — if not most important — wind-energy stories from both the magazine and the webs...
US firm launches novel CVT device
UNITED STATES: The overall operational benefits of continuously variable transmission (CVT) devices are gradually attracting the attention of wind-turbine manufacturers. Currently there are a few opti...
Uncovering the true cost of a project
WORLDWIDE: In my early days as a design engineer at a rural technology development centre in South Africa, I was faced with the challenge of addressing frequent bearing failures on the fan units of a ...
Planning can reduce high-cost cabling risks
WORLDWIDE: Considering the overall cost of an offshore wind farm, subsea cabling may represent a relatively small part, but the risk associated with cabling far exceeds its share of the costs. Logisti...
Alternative solutions for offshore foundations
EUROPE: Offshore wind turbines are largely fixed to the seabed with a permanent or semi-permanent support structure. Some models float with the aid of a floater body and mooring system --tension leg o...
Solving cabling issues is essential for success
WORLDWIDE: Problems linking offshore wind farms to the shore are resulting in damaged subsea cables and costly insurance claims. The scale of the problem is considerable.
Designed for offshore
WORLDWIDE: Most of the current installed offshore turbines are in the 2-5MW range, three-bladed, pitch-controlled variable speed with upwind rotor orientation, with gearbox. Generators are usually ind...
Magnet price hikes hit direct drive's future
Permanent-magnet direct-drive generators make gearboxes in wind turbines redundant and this major reliability advantage has made them attractive to manufacturers.
High hopes for low wind
Faced with escalating grid-access problems, China is broadening its outlook and starting to develop wind farms in low wind-speed areas, while continuing to develop its eight large 10GW-level wind-powe...
Building an offshore sector to rival Europe
Meteorological studies have shown that China has up to 500GW of exploitable resources in seas 5-50 metres deep, about half of the onshore wind resources.
Going to great depths to store wind power
UK: A project led by Nottingham University in the UK and partially funded by German utility E.on aims to test the viability of storing air compressed by renewable power in energy bags submerged at sea...
Energy oasis or mirage?
Vast desert areas in the Middle East and North Africa (MENA) offer the prospect of a formidable sustainable-energy source for a growing population, the promise of much-needed jobs for the region's you...
Alstom targets UK with 6MW direct drive
UK: Alstom's 6MW Haliade 150 direct-drive turbine is at the centre of the French power company's strategy to target the next round of UK offshore development.
Enercon adds high tower E-101 to range
GERMANY: Direct-drive pioneer Enercon of Germany installed a prototype 3MW E-101 turbine in June, a second-volume model to go with the 2/2.3/3MW E-82 series.
Low wind projects and technology flourish
WORLDWIDE: As the number of available prime wind locations has dwindled, developers are looking to lower-speed sites and manufacturers are responding with new turbine models. This growing market prese...
The gearbox repair market continues to grow
EUROPE: The annual rise in wind-turbine installations means a bigger market for servicing, a major part of which is gearbox repair and refurbishment. As the wave of new demand approaches, the industry...
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