STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[hartiberlin]

There's a trick to completely kill emf without the need of simulations and speculation. I'll think about it more and post it.

Hi Broli and all,
YES you can completly KILL the CounterEMF during your ON-Time from 6 to 8:

Just put 2 toroidal coils in series, but with one coil the polarity reversed !

This way the counterEMF will add up to ZERO !
But as the current does still flow, the effect of making the ferrite act
like air with muR=1 is still there and voila , no CounterEMF !

You probably still can extract the BackEMF, if you have seperate graetz bridge diode rectifier
circuits across the single toroidal coils, so this would be the optimal solution, I guess.

@Ben, I totally agree with you , what you said about TinselKoala.

He just has a much different setup that just shows low CounterEMF,
which his scope on these settings and due to his low tau=LR does not show.

also he has some kind of triangle CounterEMF induction waveform.
The Orbo probably has a much different very low CounterEMF, when the
magnets just go by the toroidal ferrite coils and as I said above,
this also can be canceled by putting 2 coils with polarity reversed in series !

Regards, Stefan.

[k4zep]

Hi Broli and all,
YES you can completly KILL the CounterEMF during your ON-Time from 6 to 8:

Just put 2 toroidal coils in series, but with one coil the polarity reversed !

This way the counterEMF will add up to ZERO !
But as the current does still flow, the effect of making the ferrite act
like air with muR=1 is still there and voila , no CounterEMF !

You probably still can extract the BackEMF, if you have seperate graetz bridge diode rectifier
circuits across the single toroidal coils, so this would be the optimal solution, I guess.

@Ben, I totally agree with you , what you said about TinselKoala.

He just has a much different setup that just shows low CounterEMF,
which his scope on these settings and due to his low tau=LR does not show.

also he has some kind of triangle CounterEMF induction waveform.
The Orbo probably has a much different very low CounterEMF, when the
magnets just go by the toroidal ferrite coils and as I said above,
this also can be canceled by putting 2 coils with polarity reversed in series !

Regards, Stefan.

Hi Stefan,

You can also use two magnets running one above and one below the centerline of the coil if coil is on side facing rotor, or one magnet hitting the top of toroid and the other hitting the bottom if facing the coil and not have to use two coils!!!!  I think in a N/S configuration.....Must test to be sure.  IF this is true, then all coils just in series and all four coils is fed into bridge back to battery.  This would give a operational voltage between 1.25 and 1.4 VDC volts when ever the innies and outties add up!  Lots of other little things but basis is pretty simple.  I do like their instrumentation but too expensive for me.  Their torque measurement device  and software would make setup a snap!  Money can buy happiness.

Ben

Another thing, I think the micrometer on the big unit, is to raise and lower lower the main rotor tracks to get the best cancelation orientation with the paired magnets.....that is just speculation though. 

[PaulLowrance]

I haven't seen TinselKoala's version, but I know for fact that it's far far more complex then slopping some toroids & magnets together and saturating the core. Maybe Steorn found a different method because they have not told me or anyone I know the details, but IMO if the toroid core is saturated then that's a guaranteed way to not get cop>1. According to my old FEMM analysis on my solid-state designs the balance of the fields between all of the applied fields can be critical.

[0c]

Another thing, I think the micrometer on the big unit, is to raise and lower lower the main rotor tracks to get the best cancelation orientation with the paired magnets.....that is just speculation though.

Nope. The micrometer head is for adjusting the relationship between the ring magnets in the magnetic bearing components for minimum friction.

0c

[broli]

@Stefan that is a simpler suggestion than mine. I don't see why it shouldn't work. Even though Steorn hasn't given away their exact theory behind orbo, I believe we have come up with a solid base worth experimenting.

To find the best conditions requires a lot of experimentation like PL points out. For instance for the ohmic losses to stay low the ideal henries have to be used that cause saturation far below the ohmic current limit. The rpm also plays a role in this, since the rise time window will get smaller if the rpm increases. Further more this energy can be captured back in a capacitor which then charges the source. For the cores preferably soft ferrite material should be used, to rule out eddy currents and core losses. These rings can be found in old power supplies of any kind.