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Author Topic: Kapanadze Cousin - DALLY FREE ENERGY  (Read 11806319 times)

verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12150 on: February 15, 2016, 10:30:18 AM »
Quote from: Jeg on February 15, 2016, 09:07:25 AM
Phase shifting degrees, depend on the frequency that you work with.
Only if you use a fixed delay technique. 
With this technique, the phase shift is created by time delaying a set number of microseconds, not by a set number of degrees.
Because of this little difference, the same time delay creates different degrees of phase shifts at different frequencies.

Quote from: Void on February 15, 2016, 07:04:41 AM
Hey guys. Can anyone direct me to a schematic for a circuit that has been tried and tested which
will trigger off a pulse waveform, such as an output from the TL494, and which will create another pulse train
of the same frequency with a continuously adjustable phase delay, allowing setting the phase delay
angle from 0 to 90 degrees?
To do that, I'd need to know whether the e.g. TL494 outputs always stays at the same frequency ...or is that frequency to be variable (manually or automatically) ?

In case of the latter - do you want the phase shift to stay fixed as the output frequency of the TL494 is varied ?
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itsu

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12151 on: February 15, 2016, 10:33:00 AM »
Quote from: verpies on February 15, 2016, 12:38:00 AM
I don't know what you mean by "bucking" since the these two halves of the primary winding are not supposed to be driven both ON at the same time, thus the fluxes generated by these windings cannot buck.

Anyway, since the goal is to produce bipolar alternating flux in the core, then these primary winding halves are supposed to be connected in such manner that when the 1st MOSFET is ON, then the flux in the core is generated in one direction and when the 2nd MOSFET is ON, then the flux in the core is generated in the other direction. 
An alternating flux, generates an AC across a resistive load connected to the secondary winding.

The black dots A & B, on the diagram below, illustrate the proper split-primary winding connections according to the dot convention.
The orange parts of winding W1 (dots C & D) as well as C3/D3 and C4/D4 are components of the optional lossless clamps.
...and that is the only reason not to use the lossless clamps which are more effective and more efficient than RCD snubbers.


Verpies,   


thanks for reminding me to that lossless clamp design, i did thought about using it, but my main problem with it is that the present
2x 12 turn primaries together with the 28 and 3 turn secondaries setup creates a certain voltage relationship.

I would have to use trail on error and much more secondary turns to get to a similar relation with your design i think.

But if all fails, i might give it a try anyway.

Regards Itsu
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verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12152 on: February 15, 2016, 10:51:17 AM »
Quote from: itsu on February 15, 2016, 10:33:00 AM
...my main problem with it is that the present 2x 12 turn primaries together with the 28 and 3 turn secondaries setup creates a certain voltage relationship.
Actually the lossless clamp technique does not change the turn ratio, nor the voltage ratios, because the additional primary windings (4x 12 turn in total) do not change the number of effective primary turns.  That quadriple primary winding still behaves as a 2x 12 turn winding, as far as the transformer is concerned. 
In other words: the 2nd primary winding (orange) does not participate in transformer action - it just catches the spike energy from the 1st primary winding (black).

In any case, pay attention to your dot convention so your primary windings generate a bipolar flux ...not a pulsating unipolar flux.
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itsu

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12153 on: February 15, 2016, 11:14:52 AM »

Ok, thats clear, i thought that one requirement of the lossless clamp design was that the primaries consists of severall layers around the circumference of the toroid
making much more then 2x 12 (or 4x 12) turns primary which distorts the primary/secondary relationship.

Good to know it can be done with 2x 12 (4x 12) primaries too.


Itsu
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Void

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12154 on: February 15, 2016, 11:29:35 AM »
Quote from: verpies on February 15, 2016, 10:30:18 AM
To do that, I'd need to know whether the e.g. TL494 outputs always stays at the same frequency ...or is that frequency to be variable (manually or automatically) ?
In case of the latter - do you want the phase shift to stay fixed as the output frequency of the TL494 is varied ?

Hi Verpies. I would be adjusting the TL494 driver circuit frequency manually through a small range.
The main aim there would be to manually tune for series LC peak resonance in a secondary loop.
It would be nice to have a circuit that maintains the same phase shift if the TL494 driver's
frequency is adjusted up or down a bit, but I don't think it is necessary for basic testing. The Allega phase shift
circuit appears to be time constant based, but it should get the job done. Will just need to readjust
the phase delay each time after adjusting the PWM frequency.

Verpies don't go to any trouble designing a new circuit. I should be fine for now with the Allega phase shift
circuit for the testing I have planned. All I really need to do is for a given PWM driver frequency in the range
of say 10 kHz to 30 kHz or so, to be able to set the phase delay of a second pulse train of the same frequency
anywhere within 0 to 90 degrees.  It sounds like Allega's circuit will do the trick here.
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Tomtech29

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12155 on: February 15, 2016, 01:10:49 PM »
HI>
I see guys that brainstorming with the unfortunate TL494
what the new changes made Comparing the standard PWM as referred to this phase shift?
-I think this system without feedback loop (It works in the same way) LC inductance changes when the coil heats up and the high state of resonance changes under load!
What is the value added Itsu?
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verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12156 on: February 15, 2016, 02:21:39 PM »
Quote from: itsu on February 15, 2016, 11:14:52 AM
Ok, thats clear, i thought that one requirement of the lossless clamp design was that the primaries consists of several layers around the circumference of the toroid...
Even number of full layers, (with reversing circumferential direction) minimizes the leakage inductance.

Odd number of layers or layers not spanning the entire circumference of the toroid, minimize the energy transfer to the secondary windings and maximize the leakage inductance ...and spikes that go with it.

The above is true for any toroidal transformer.
Such perfect windings also help to make the losssless clamps to be more efficient, but they will also work with imperfect windings...albeit imperfectly.

Lossless clamps work on a principle of doubling the primary winding exactly and subtracting their signals, so it is important that the orange and black windings are exactly the same and in the same place on the core, ...hence the bifilar wind.
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Dog-One

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12157 on: February 15, 2016, 03:26:16 PM »
Quote from: verpies on February 15, 2016, 02:21:39 PM
Lossless clamps work on a principle of doubling the primary winding exactly and subtracting their signals, so it is important that the orange and black windings are exactly the same and in the same place on the core, ...hence the bifilar wind.

With limited winding area on the core, can the optional windings be of considerably smaller wire diameter?  Or would this change the characteristics far too much to still be effective?
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verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12158 on: February 15, 2016, 04:21:13 PM »
Quote from: Dog-One on February 15, 2016, 03:26:16 PM
With limited winding area on the core, can the optional windings be of considerably smaller wire diameter?  Or would this change the characteristics far too much to still be effective?
Yes, the wire diameter can be smaller, as long as it runs bifilarly parallel along the original primary winding.
The resistance of a smaller wire will be smaller and that will decrease the clamp action somewhat, but not much, since the duty cycle of the current flowing in this additional winding is low (on only during spikes).
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verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12159 on: February 15, 2016, 04:35:24 PM »
Quote from: Tomtech29 on February 15, 2016, 01:10:49 PM
I see guys that brainstorming with the unfortunate TL494
IMO, currently the brainstorming refers to what happens after the Power MOSFETs, not before them.

Anyway, what PWM controller do you like better than the cheap and ubiquitous TL494?  Can you do a side-by-side comparison of their specs?

Compare such features as the max frequency, max duty cycle, double outputs for a push-pull front end, voltage mode vs. current mode, pulse-by-pulse current limiting, dead time range, external clocking ability, price, etc...


P.S.
Don't concentrate on output sink/source currents of a PWM controller in your comparison, unless the PWM controller can beat the MOSFET Driver's output specs, such as the UCC37322 specs.
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Tomtech29

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12160 on: February 15, 2016, 05:07:38 PM »
verpies
what are other configurations TL494?
-This is fitted with a dual winding I have not seen such?
as long as they reduce losses?
(and how does this affect has an impact on the LC tank)
so I ask out of curiosity, reducing the size of the cable to cram further reduce the value of the current!

Has anyone tried this variant:
https://www.youtube.com/watch?v=Gf6KC4mpZD4&list=FL8JJhsPd1CaYFGI4Np8DLJQ
I know that it was already how it works?


 
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verpies

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12161 on: February 15, 2016, 05:39:58 PM »
Quote from: Tomtech29 on February 15, 2016, 05:07:38 PM
what are other configurations TL494?
I don't understand that question.

Quote from: Tomtech29 on February 15, 2016, 05:07:38 PM
-This is fitted with a dual winding I have not seen such?
Ask Itsu to show you a video of it.  He built it and filmed it a long time ago.

Quote from: Tomtech29 on February 15, 2016, 05:07:38 PM
as long as they reduce losses?
Yes they reduce losses because the energy contained in the switching spikes is not wasted as heat in RCD snubbers but recycled back into the power supply.

Quote from: Tomtech29 on February 15, 2016, 05:07:38 PM
(and how does this affect has an impact on the LC tank)
It does not affect anything connected to the secondary winding.

Quote from: Tomtech29 on February 15, 2016, 05:07:38 PM
so I ask out of curiosity, reducing the size of the cable to cram further reduce the value of the current!
Yes, the smaller wire has higher resistance and this reduces the value of the current in this winding, but that current is only the spike recovery current.  The main primary current stays the same.  When you add the energy recovered from the switching spikes, then the total current draw from the power supply of both primary windings is less than the current draw of the original primary winding.
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GeoFusion

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12162 on: February 15, 2016, 05:54:08 PM »
Hi there :)

Tomtech,
that is what I have working now in this way.

Look,..The only way it will work is when you know how to let A mediator effect take place on the Circuitry we create.
But How I have it hooked up is with a mediator transformer.
when it starts working well, Radiant will be introduced to load beautifully
It's all Radiant converted into usable energy.

Ibrahim told me he uploaded a Vid for me to see and here it is
 is showing it here in this video uploaded recently to show all.
Exactly what I have now.

https://www.youtube.com/watch?v=Gf6KC4mpZD4


Tomtech,
that is what I have working now in this way.


Cheerz~
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Hoppy

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12163 on: February 15, 2016, 06:00:04 PM »
Hi Geo,

Are you back up and working yet after the blow-out and do you still intend to take measurements on your mediator setup?
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GeoFusion

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #12164 on: February 15, 2016, 06:25:09 PM »
Hoppy,

I will do measurements when I have it up and running again, need to fix the Pushpull still.
But take a look at the provided link of Ibrahim ( URFA) He shows some readings there when Kacher connects
and when effects plays.

Cheerz~
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