Re: micro hydro load controller


"andy baxter" <andy@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:pan.2006.10.04.03.34.02.916206@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

I'm also not sure why people say you need a dump load. What I'm thinking
is if you have an alternator which generates its own power for the field
coils, then if it overspins the voltage on these coils could rise too
high, increasing the current to the point where they burn out. Is that the
problem or is it something else (mechanical failure?)

That makes no sense unless the alternator can be overspun by the turbine -
very unlikely. If it's an auto alternator it's designed for a wide range of
speeds.








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