Originally posted by Quantum_well
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It is a trade off, shorted coils can do this as shown in the video. Shorted coils do not have current flowing in them because of an external source, power is being generated due to passing magnets and the fields are in a delayed time domain such that their fields assist rotation.
If we lessen the delay, open the circuit to each coil with actual produce power but the drive input will not drop as much. The optimum as pointed out by wild man Turion is to have less delay so more power is generated and the drive input is nearly unaffected or only slightly reduced. That condition would offer the most generated output for the same drive motor input.
Imagine adding generator coils around the wheel that do not slow down the rotor when called upon to deliver real power. Add 5,10 or 100 and the coil does not slow down the rotor.
Generators today add 1 watt to get 1 watt, they are a less than 1:1 relationship.
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