Duration: 40 sec
The braking mechanism on this windmill [in Hornslet near Aarhus] that is supposed to slow the blades in high winds seems to have failed.
I couldn’t find video on how correctly functioning brakes work on large commercial windmills, but here is an example of a homebrew windmill furling in high wind.
A bit of video of otherpower.coms homemade 20′ diameter wind turbine on a breezy day. During this video you can just see it starting to furl – it’s generating between 2 – 3KW most of the time. This is the machine that powers our off-grid home and shop.