Matt,
What you are hearing is alternator noise. It's caused by the
vibration from the permanent magnets passing by the alternator
coils.
All turbines produce some alternator sound, some more than others
and the tower itself can act as a resonator, amplifying the
Friends,
I've exhausted the Bergey tech support expertise on this issue and I'm
hoping someone on the list may have a solution to share.
I have a customer with an older XL.1 on a tilt-up tower. The machine has
been in place since 2007. I've done some work to it over the years
including blades, y
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