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One item arises my curiosity. No one has mentioned the reactance, or AC
resistance of the coil, and what part this will play in the load and power
dissipation.
inductive reactance = xL =2 pi times f or frequeny times L Inductance of the coil . Or xL = 2 (3.14 ) f L
As RPM goes up, the AC resistance (reactance) goes up and dissipation
should therefore go down.
Just some thoughts
Regards
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