Quote:
Originally Posted by BrianG
Personally, I agree. That "measly" 2% can make a pretty big difference when we are talking about the power levels we run. At 88% efficiency, a motor drawing, say, 500w, but would have 440w of usable output, with 60w wasted as heat - a lot considering the physical motor size. An extra 2% reduces wasted power to 50w - still a lot, but even that 10w difference can translate to a few degrees in reduced temperature and/or increased runtime.
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I always like to put it into a perspective similar to this. The 2% efficiency increase is somewhat misleading - 2% doesn't sound like a lot, but if you go from 88% efficiency to 90% efficiency, you could also express this as going from 12%
inefficiency to 10%
inefficiency.....or a 16.7% difference in efficiency and therefore heat. :)