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a Backward Concept

a Backward Concept

a Backward Concept

(OP)
Could a set of permanent magnets be formed into a single circular shaped rotator with each semi insulated from the other pole/semicircle ?  And in the event they were sharing function as part of a bazarre combination hybrid engine concept what kind of temperatures and stress could these magnetic rotators endure, and could they be machined and fabricated upon ?  What kind of magnets would be the choice, or is it too backwards ?

RE: a Backward Concept

The main rotor on 5 1/4" floppy drives were almost all made with moving magnet rotors, even though they are brushless.  

I suspect that it's because that configuration has the highest moment of inertia to weight ratio, which is important for minimizing the impact of cogging.

Note that such a configuration makes the windings more complicated in the sense that they become physically spread out and separated.

TTFN

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