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Old 04-16-2012, 08:32 AM
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I think I did mention that Ohm's law is an approximation at best for what is really an inductive AC circuit. That said, a lot of empirical evidence and testing went into these calculations and the resistors seem to do the trick. I also decided thanks to this thread the next EI system I get will be CD and not use the coil to store energy.
Quote:
Originally Posted by ArtJ View Post
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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