Sharing ideas on how to make a more efficent motor using Flyback (MODERATED)

[verpies]

If you use a lot of little electrolytic caps in parallel the esr is lowered considerably.  Plus, smaller caps have lower esr compared to larger ones, so the gain of a lower esr is even better than just the paralleling of larger caps.

You you can use various techniques to adapt to the peculiarities of electrolytic caps, but don't loose the site of the goal in pursuit of these techniques.
...and the goal is to transfer all of the energy from L1 to L2 as efficiently as possible.  This usually means as quickly as possible, too....so the current through D1 flows as little time as possible.

Note, that with a large C1, the time to transfer energy from L1 to C1 is large too, [ precisely t=π(L1*C1)^½ ] and during that long time, the forward voltage drop of D1 can waste a lot of energy.
So, a larger C1 does not mean a more efficient operation ...and the electrolytic caps just lost their biggest advantage (large capacitance).

BTW: C1 must be able to tolerate voltages of at least V = i_L1*(L1 / C1)^½  , thus the smaller the C1, the larger voltage it must tolerate to hold the same energy.
This capacitor voltage also defines the blocking voltages of the switches S1 and S2 and reverse voltage of diode D1 and D3.  This is an issue with Schottky diodes which usually have low reverse blocking voltages.

[shylo]

Sorry guys I should clear things up, I'm using a mag rotor for generating the spikes , storing them in caps ,and the trying to dump them back into the generating coils to serve as motor coils.
I have 7 coils in place which gives the possibilty  of 56 storage caps, currently I only have 36 wired in (it's a nightmare) room for 20 more.
The problem is trying to dump the caps ,since I have zero electronic skills, I have been trying to design a mechanical switch.

Luc if this too far off topic I apologize and will understand if you delete.

Btw what does esr mean?

[tagor]

Btw what does esr mean?

https://en.wikipedia.org/wiki/Equivalent_series_resistance

[shylo]

Thanks Tagor, I just measured the resistance of my 7 coils wired in series to be 334 ohms.
I tried to measure a cap but just got an error reading.
But as soon as the mag rotor moves the coil readings just bounce all over the place, so is this esr really that important?
artv

[verpies]

I tried to measure a cap but just got an error reading.

It is not possible to measure ESR of a capacitor with an ohmmeter.