AC circulator vs. PV driven DC [RE-wrenches]

Windy Dankoff, Dankoff Solar windy at dankoffsolar.com
Sat Apr 12 18:02:07 PDT 2003


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>DC pumps require precise matching of the amperage voltage curve of the  PV
>module curve to the real motor requirements of the  DC  motor --the reason
>you are having problems is that you do not know how to match  THE  pv module
>to the DC  motor--the march WILL last 15 years PLUS   if the pv module is
>not over 16 volts AND the amperage is not over 1,4 amps -- the brushes will
>ride on an air  if you over power the 12 volt motor   gator tomGlobal

Gator's right about the little high-speed motors like the March pump. 
For the big fat slow-speed motor we use on SunCentric, you can 
oversize the array all you want.

Just FYI.

Windy

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