Quote:
Originally Posted by Ether
That last part -- "while consuming 2x the current" -- is generally not true for different motors.
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Quote:
Originally Posted by apalrd
Yes and no.
Assuming the motors were both perfectly efficient (or identical efficiencies), then what I said would be true.
For the CIM and MiniCIM, this is roughly true (the miniCIM will contribute it's share relative to it's power potential), as they are nearly identical motor designs.
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For the sake of students who may be reading I need to make a couple observations:
When I wrote "generally not true for different motors" it was not intended to include "nearly identical motor designs". I assumed that would be inferred but perhaps it should have been stated explicitly.
If two different motors have identical efficiencies at the chosen operating point, that would be a special case... not general. In general, the efficiencies of different motors will not be identical for an operating point selected based on current or power.
Your posts are usually very practical. I'm sure you did not expect your readers to infer you were discussing
perfectly efficient motors.