I received an e-mail a few days ago from a very disappointed user of a Chinese VAWT (Vertical axis wind turbine). I am reproducing the correspondence here. In doing so, I am omitting, by request, the name of the writer, and I am also making no evaluation or personal comment on these turbines.
I sure hope you haven’t bought a mill (wind-turbine) from Shanghai! I did, it was the biggest mistake of my life! I was even there to visit them; they just don’t produce anything besides a lot of costs and headaches! Sorry I can’t give any tips on what works, but just wanted you to know these mills from Shanghai should be avoided at all cost.
Thanks K … - Can you be a bit more specific about the model and the problems? I would like to report it but I need some specifics. I will not publish anything pointing to you or your email address.
Thanks for the mail, My mill is a 1kw from SAWT, the first problem was that the spring to hold the brakes apart was placed too close to the axle, which in turn made a terrible scraping noise when it turned. I ended up having to take the mill down and fix the brake system with my own ideas. The next time was a magnet that got loose in the generator - that stopped the mill from turning; again I had to take down the mill.
SAWT sent a new generator and controller, but to get it through customs I had to pay 700 USD, which is not reimbursed. The mill then worked, but after 2 weeks of good wind it had only produced 0,8kW totally, then the controller collapsed and now its not working again.
At the same time I believe it must be possible to get this system working because it’s relatively simple. I have been warned about another make of VAWT, which comes from China, it has no plates on the top or bottom of the wings, it sounds even worse!
I would be grateful if you didn’t publish my name, as it may affect my guarantee... its more for your own information.
Hope it helps,