IEEE: wind-farms unprofitable

Andre Kesteloot andre.kesteloot at
Wed May 26 22:44:26 CDT 2010

Anything that needs oil, or has bearings, will need expensive  
maintenance, particularly off shore IMO

Sent from my iPhone (apparent spelling errors are due mainly to the  
thickness of my index and the size of the iPhone keyboard).

On May 26, 2010, at 22:47, "Mike O'Dell" <mo at> wrote:

> It's common knowledge in the wind biz that gearboxes are the  
> Achilles Heel of turbines. That is why there's a huge push for  
> direct-drive turbines. GE Wind's new 4 megawatt turbine designed  
> specifically for offshore use is direct drive. Generators are rare  
> earth permanent magnet units with rectifier inverters to make grid  
> sync 60 Hz.
>     -mo
> Sent from my iPad
> On May 26, 2010, at 5:24 PM, andre kesteloot <andre.kesteloot at 
> > wrote:
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