Mostly Permanent Magnet Motor with minimal Input Power

[Magluvin]

I'll add that the test above was with the coil connected in bifilar Series since when it was connected in Parallel it needed a little more Joule energy.

So to raise the 2.325kg coil up 10mm

Coil in Series with 7170uf cap @ 9.3vdc = 310.07mj

Coil in Parallel with 7170uf cap @ 9.9vdc = 351.37mj

Luc

So this is quite different in terms of input/output as compared to the previous tests, correct? More power needed for parallel than for series bifi?

Mags

[gotoluc]

So this is quite different in terms of input/output as compared to the previous tests, correct? More power needed for parallel than for series bifi?

Mags

Yes must be because the input is a capacitive discharge compared to the previous test was continuous DC pull force test

I've also noticed the coil holds up a little longer when connected in series. Maybe it's the small coil capacitance? or maybe it's just the coil has more inductance so now the generator effect is more as the coil drops down with gravity and tries to charge the cap bank in opposite polarity?

Luc

[telecom]

Hi Luc,
capacitor will never do the work completely due to the nature of the discharge , IMHO.

This may be the reason why it shows 80 % efficiency.

[gyulasun]

Hi Luc,

You can check the built-in capacitance between the parallel wires of your coil by using your C meter of course, just leave open all the four wire ends and connect the meter to one wire pair at say the left side, note the C and then repeat this at the right side and note the C, these two ought to be pretty much the same within a few percent.

I believe the series connection holds up a little longer because the discharge time of the capacitor increases a little due to the higher impedance of the series connected coils.

If you suspect the increased generator effect of the series coil configuration is also to blame for the little longer holding time then consider to include a diode in series with the capacitor with forward direction to the discharge process i.e. lifting, so it will block any reverse voltage hence current in the falling phase of the coils.

Regarding losses, there is the I²R heat loss as the most significant,  beside the steel core eddy current loss and the possible saturation loss you mentioned.
Also,  if you had an open magnetic path for the coils, then some stray field loss would also occur (certain part or amount of the coils flux would not participate in the useful lifting direction)  but such loss in your present setup is most likely at a minimum.

Gyula

[synchro1]

Yes must be because the input is a capacitive discharge compared to the previous test was continuous DC pull force test

I've also noticed the coil holds up a little longer when connected in series. Maybe it's the small coil capacitance? or maybe it's just the coil has more inductance so now the generator effect is more as the coil drops down with gravity and tries to charge the cap bank in opposite polarity?

Luc

That's what I'm talking about! Luc generated a "Magnet Wave".