Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated

[pmgr]

Can somebody solve this riddle?

Pierre; "the resistor is really hot"

1]  Check in first film at 2min. 40sec. Start the charging of the supercaps (4.6 Volt). About 0.5 Ampere from the 'wall' goes to the transformer.

2]  Check in film at 3min. 40sec. The supercaps 25.1Volt with 0 to 0.1 Amp in to the transformer.

3]  Check in film at 5min. 06sec. Arduino have just Start the program, The supercaps <25Volt while 1.5--2 Amps is Now feeding the transformer!!

Hi seaad,


1) This is indeed a bit strange, if the supercaps are low in voltage, I would expect a large inrush current, but maybe the supercap boards have some current limiting.


2) This would mean this 25.1V is the max voltage that the transformer can put out after rectification and the caps are charged up to that so current draw goes to zero. This would be the peak voltage of the secondary.


3) I believe Pierre states in his first video that the transformer is home made. Mains is 170Vpp, secondary is 25Vpp, so winding ratio is 6.8, or 1.5A at primary becomes 10A at secondary which would cause 40V voltage drop over resistor... so indeed this doesn't make any sense... Only thing I can think of is that the primary current meter is not reading correctly.


PmgR

[seaad]

Hi seaad,
1) This is indeed a bit strange, if the supercaps are low in voltage, I would expect a large inrush current, but maybe the supercap boards have some current limiting.

2) This would mean this 25.1V is the max voltage that the transformer can put out after rectification and the caps are charged up to that so current draw goes to zero. This would be the peak voltage of the secondary.

3) I believe Pierre states in his first video that the transformer is home made. Mains is 170Vpp, secondary is 25Vpp, so winding ratio is 6.8, or 1.5A at primary becomes 10A at secondary which would cause 40V voltage drop over resistor... so indeed this doesn't make any sense... Only thing I can think of is that the primary current meter is not reading correctly.
PmgR

From first film: 26 Volt only not p-p? , 30 A 

That current limiting seems to not work when arduino up and running!   2Amps  in to the transformer then.

Regards Arne

[onielsen]

Hi seaad,

The numbers on the figure doesn't add up.

3]  Check in film at 5min. 06sec. Arduino have just Start the program, The supercaps <25Volt while 1.5--2 Amps is Now feeding the transformer!!

I agree with PmgR that the meters aren't correct calibrated for the waveform. The output of the device isn't a pure sine wave and it is of low frequency. Cheap meters usually measure mean value and thus are calibrated to show the correct RMS value for a sine wave. As the form factor of the wave isn't the same as that for a sine wave such meters will show the wrong value. Even RMS meters and true RMS meters may not be correct calibrated. See the following articles about the problem: https://meettechniek.info/opinion/true-rms-or-a-true-lie.html and https://meettechniek.info/multimeter-avo/measurement-deviation.html.

An oscilloscope would be preferable for the measurements or the current could be measured through the resistor which is put between the two filter capacitors. At this point the waveform must be close to DC.

Regards
Ole

[jerdee]

The naming convention appears to  take the clockwise slot...
junction 36-1 =1
junction 6-7   =7
junction 12-13 =13

Same polarities spaced 13 apart, ties up with the original scheme shown.

L192

Funny that the image shows that he wants to solve the problem with 4 poles instead of 6.  In order for him to do this he would have to replace each coil to a 9 pole bridge instead of his 6.  Always look at the pattern.  For a 4 pole to work correctly, you would need to trigger 9 coils in series with a bridge gap of 9. Do you see his pattern?   This means we might have problems doing our setup with the same bridged poles as the 36 pole.  It should be 5 to match his same configuration.  [size=78%]I beginning to realize why the overlap in coil windings will be a problem.  I can see how his new configuration will work better!

I also believe we could do this method of pulsing on a toriod completely solid state. 

I was also able to place the priming sequence of coils to visualize the arrangement.  My original post had a wrong pin number, 14 should have been 13.  The reason for this PIN change is because all odd relays are on the outside and even relays are on the inside.  See image.  I still don't understand why he is priming the entire stator prior to sequence.  Maybe this image will help others.   

Jerdee

[r2fpl]

Rotate 6 coils = 6 poles

https://youtu.be/EtuZJFKu3uQ