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10/12si Hybrid Alternator | 7 comments (7 topical, editorial)

Re: 10/12si Hybrid Alternator (3.00 / 0) (#7)
by Expunge (expunged@gmail.com) on Sun May 18th, 2008 at 08:43:16 PM MST
(User Info)

Flux, thanks for the input, you answered the main part of my question I guess as to what the parasitic loss would be as compared to a PMA. The issue with dump loads is we are using wind power for some remote radio locations and usually combining with solar. Most of these sites are a radio and some batteries inside a box just barely big enough for all of that, no real place to dump the heat. The only place we can put the heat is outside our little boxes and we really don't have space for all of that, not to mention the fact that we are fighting some serious weather extremes. All of our wind setups are designed to furl and the blades are excessively strong so I don't see a real overspeed issue.

The biggest issues are space, reliability and simplicity/cost. It actually would take less $$$ to convert a standard alternator with just a finer stator than it takes to convert to PMA, so savings there. Don't have the expense of a dump load and don't have to get rid of the heat. Heat can be great when it is -10F but when it's 110F, it's really hard to keep your load cool, and your fan fails, so does your load, batteries overvolt, cook, done. If the alternator were to fail, 99 times out of 100 they just quit putting out power instead of overvolting.

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10/12si Hybrid Alternator | 7 comments (7 topical, 0 editorial)

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