Library filed under Structural Failure from Michigan

Michigan Blade Failure

Mi_blade_break1_thumb Another turbine failure has been reported at Michigan's Deerfield wind facility in Huron County. The Deerfield project includes a mix of Vestas V110 2MW and 2.2MW machines for a total installed capacity of 150 MW. Two blades on separate turbines broke in half in late 2016 when the project was in the process of being commissioned. There was “an anomaly in the manufacturing process that resulted in a cavity in the blade shell support structure where the blades broke,” Vestas told reNEWS. Fifty blades in the 72-turbine facility shared the same flaw. No information is available on the cause of this recent failure.
28 Sep 2017

Hundreds of Tuscola County wind turbine motors being replaced, design flaw blamed

Gauger said it’s been determined that the “old style” keyway pitch motor is “defective” and not able to handle the load that is being placed on them by longer blades. He said the motor is essentially trying to adjust itself so that there is less drag. “What happens is on the upswing or the downswing, it’s actually got some slack in there and that’s that clunking noise that people are hearing,” Gauger said.
14 Jan 2017

Turbine fire in Missaukee County Michigan

Heritage_turbine_fire_thumb Heritage Sustainable Energy lost a turbine to fire at the Stoney Corners Wind Farm located in parts of Missaukee and Osceola Counties, west of the City of McBain, Michigan. The project consists of 29 wind turbines at an installed capacity of 60.2 megawatts. Special thanks to Dianne Ziegler for allowing us to share her photos on the Windaction site.
20 Dec 2016

Out-of-control wind turbine ‘shook itself apart’ in Huron County

The turbine exceeded designed rotation speeds — 14.4 rpm (revolutions per minute) -- and at that speed, blade tips are moving at about 200 mph, according to Exelon. It created an imbalance as blades picked up speed. At the time of collapse, rotation speeds reached 18 rpm, officials said. “At that high of an rpm, the thing just basically shook itself apart.”
6 May 2016

http://www.windaction.org/posts?location=Michigan&topic=Structural+Failure
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