Originally posted by penno64
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I've read about 1/2 of the posts (thread growing rapidly today).
Here's what I've gleaned, in the hopes it saves you time / head-scratching. Don't assume that my understanding is correct, comments welcome.
His rotor contains 8 magnets, all pointing in the same direction, sandwiched between two stators.
Each stator has 9 coils, 300 turns, about 36AWG (litzed). Each top stator coil is in series with its bottom partner, i.e. each of the coils is really 600 turns, and the rotor cuts through the middle (cross-section) of the coils.
Of the 9 (compound) coils, two are used as drive coils - that's our rewound motor. So, we could drop 2 of the coils (and 2 of the magnets???).
The other 7 coils are generator coils, each dumped into a separate FWBR. All FWBR outputs are connected in parallel to a cap.
The cap is connected to a DC-DC converter (12VDC to DC1.5, 3, 4.5, 5, 6, 9 and 12V). He claims he needed the converter to stop "burning out" his coils. I'm guessing a direct connection from the cap to the 2 drive coils produced flybacks high enough to hurt his wires, and that the converter smooths that out. That's what our recovery brushes are for, but it bears some thought as to whether a "regulator" might be of assisstance to our stuff.
The output of the DC-DC converter is put back into the two drive coils. Each drive coil is pulsed with a Hall-effect circuit (we are using the motor's commutator to pulse it).
And, in parallel, a 12VDC, 20W light bulb is connected to the output of the DC-DC converter.
The fact that there are an odd number of coils and an even number of magnets appears to be significant.
He says to tune the machine with the light-bulb in place. He appears to tune it for a smooth ride by adding extra magnets on top of some of the coils (side opposite the rotor).
He's attached a 2nd set of diodes across each of the FWBR's. I'm not yet sure if that's to increase current or to decrease diode forward voltage.
His "flywheel" is the thick plastic rotor disk.
He says that using Litz'ed wire is more productive than plain.
There are, certainly, some parallels to the Lockridge-like motor we're working on.
He's probably got less drag (better spin time) than our off-the-shelf motors.
More thoughts (if any :-) later.
pt
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