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### Author Topic: The basical equations of a MEG  (Read 6682 times)

#### Tesla_2006

• Newbie
• Posts: 22
##### The basical equations of a MEG
« on: August 14, 2006, 04:58:15 AM »
When we close in a soft iron or ferrite a magnetic flux composed for a constant magnetic field  such as the generated from a permanent magnet and an altern magnetic field we can see an energy and power amplification without violation of the conservation of energy because a magnetic field is energy and the increment of energy becomes from the field

The energy U stored in a magnetic field of B induction in a volume V is

U = 1/(2*mu0) * B^2 * V

Where mu0 is the magnetic permitivity of the vacuum

The power we can get of the field is

P = dU/dt

So with a permanent magnet U(t) is constant and P becomes zero and we don't can get power from a magnet, but if we enclose the magnet in cores of iron or ferrite , the magnetic circuits will have a constant component of field due to the permanent magnet and a altern component if we add a coil for pulse the total field, the field in any magnetic circuit will be

B(t) = Bo + Bf * Sin(w*t)

Bo the permanent magnetic component , Bf de peak altern component of the coil, w the angular frequency of the altern source

The voltage induction in any other coil for get the power for the Faraday Law will be proportional to dB/dt and so the permanent magnet component Bo becomes unnecessary, redundant and inductions works like if there is not a permanent magnet in the core, but if we evaluate the output power P(t) before calculated we find

P(t) = 1/(mu0) * (Bo + Bf * Sin(w*t) ) * w * Bf * V * Cos(w*t)

and now yes, the power output was in dependence of Bo and a power gain in relation if there is not a magnet in the system, that is say Bo = 0 , and we can compute the COP of the system for the ratio between P(t) with magnet to P(t) without magnet for peak or rms values, and we can see many great values start from 3 to the clasic MEG to N + 1, where N is the number of magnetic circuits in the system when there is not gaps in the device, when there is Gaps the COP can rise up to 40, 100,200,....and more

a good design of the system must be consistent from the COP and calculations of the magnetic circuits, not saturation and other details , that is say in the COP calculation there is values for Bo, Bf, w,  where theres is bad values where COP < 1 and the design is bad

This is like build a transistor is not too easy and not hard but all manufacturer must know very well what is building , for the beginners I don't recomend ferrites, is best common 60 Hz or 50 Hz iron has a magnetization B-H curve more wide, in other way all is random

This basical equations show for this MEG devices of any type there is not exotic resources for claim a COP>1, esoteric causes, scalar waves,etc, only classic and traditional electromagnetic theory

Any question to     enertec2200@yahoo.es

Bye

#### exnihiloest

• Hero Member
• Posts: 715
##### Re: The basical equations of a MEG
« Reply #1 on: August 14, 2006, 02:42:08 PM »
Hi all,

Tesla_2006 wrote:
" The voltage induction in any other coil for get the power for the Faraday Law will be proportional to dB/dt and so the permanent magnet component Bo becomes unnecessary, redundant and inductions works like if there is not a permanent magnet in the core"

That's right.

"but if we evaluate the output power P(t) before calculated we find
P(t) = 1/(mu0) * (Bo + Bf * Sin(w*t) ) * w * Bf * V * Cos(w*t)"

But we can't, because we would be using the formula for the static magnetic energy (U = 1/(2*mu0) * B^2 * V) instead of using the legimate general equation of energy of a varying magnetic field:
dU/dt= 1/(2*mu0) * d/dt ( int(B(t)^2 * d^3r)  )
(B(t) is a vector, and int and d^3r mean integral over a volume).

This is the reason why MEG, parallel path, Flynn generator and so on are bogus concepts.
Empirically speaking, we imagine that a magnetic flux would be something flowing along the magnetic field lines and that we could modulate this flow as we make with an electric current flowing through a semi-conductor in a transistor.
It's a bad image. Field lines are only "magnetic geodesics". In a time varying field they are  expanding or contracting around moving charges, depending on the time variation of the motion and charges. A field line is an equipotential line so there is absolutely no reason for something to move along.

Fran?ois

#### PaulLowrance

• Hero Member
• Posts: 2483
##### Re: The basical equations of a MEG
« Reply #2 on: August 24, 2006, 03:08:27 AM »
Presently there are no math equations that fully demonstrate magnetic material. It's difficult enough using computers and even to date there's no program that completely and accurately simulates such magnetic material.

Just the Magnetocaloric effect alone is complex. All magnetic materials actually become colder when the applied magnetic field is removed. In fact this is a new form of refrigeration.

When we apply a magnetic field to magnetic material the material transfers internal potential energy into kinetic thermal energy-- the material becomes hot. The opposite occurs when the field collapses-- material becomes cold.

Last year I proposed a simple method of extracting energy from the Magnetocaloric effect.  Personally I don't like the method for various reasons, but perhaps I'll try it one day when the Power Chip comes out.  Basically the material becomes hot during first stage. Any time you have a heated object, relative to room temperature, you have potential energy. So there's some energy. The material cools down a little when you remove the thermal energy. Now you remove the applied magnetic field and the magnetic material becomes colder than room temp. So you have more potential energy and the cycle repeats.

Initially materials that demonstrated high Magnetocaloric effects had a lot of losses. With recent breakthroughs in this industry such losses are practically nil.

The problem with this type of energy extraction using the Magnetocaloric effect is efficiently converting a temperature difference to electricity. As far as I know there are still no efficient thermal to electricity devices, but I'm really looking forward to the soon arrival of the Power Chip.

http://www.powerchips.gi

Paul Lowrance

#### PaulLowrance

• Hero Member
• Posts: 2483
##### Re: The basical equations of a MEG
« Reply #3 on: August 24, 2006, 06:12:32 PM »
Another effect that simple math equations cannot take into consideration is Barkhausen effect. This is difficult, but possible, to even simulate with top end computers. The coil wrapped around the magnetic material may be a perfect 1 KHz sine wave, but due to Barkhausen effect there will be intense signals in the hundreds of MHz.  Of course all these random Barkhausen effect signals cancel the farther away you get since they're random, but up close on a micro scale they are very powerful.

http://en.wikipedia.org/wiki/Barkhausen_effect

Paul Lowrance