Quote:
Originally Posted by Pdelcast
That equation only models electrical losses -- not magnetic losses (magnetic losses are lumped in with the IO constant...) Keep in mind that magnetic losses are non-linear (especially at high power.) Also, the IO constant needs to be measured at the same RPM as the output -- because other losses (like windage) are also non-constant (windage losses are RPM cubed...)
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Thanks Patrick. Whoops, forgot to multiply I0 by V, but oh well, its only a theoretical equation that will result in a graph similar to the one posted. I knew there were other variables of some sort. Otherwise it makes feigaos seem really efficient!