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Author Topic: 'Rose-Tinted Lenz' Generator...  (Read 15507 times)

tinman

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #15 on: August 23, 2013, 05:31:45 AM »
Hi Gyula,
  I have some experimental results. I tested two cases, using the same magnet & (shop-bought) ferrite-core coil. Diagrams attached below.
Results measured on oscilloscope. All values are Peak-to-Peak voltages.

Case #1: Standard generator configuration - with magnet passing over the coil.
I put a lino tile (1mm) over the coil, so the magnet wouldn't stick too hard. Then just moved it back & forth as fast as I could.
Max Volts: 2.6v

Case #2: Magnet and coil stuck between two 5mm mild steel plates. A third plate is used to simulate the rotor.
I put the lino tile over the 'rotor' plate, and moved it towards & away as fast as poss...
Max Volts: 1.6v
With 2 identical coils in series between the plates, Max Volts: 2.8v

So - it's possible to get a reasonable voltage out using this arrangement. It is less than the standard config, but not by too much.

'Bucking' coils...

I got this duelling / bucking coils' business totally wrong like a muppet, lol. The two coils act just like one bigger one, and there's no positive feedback. Maybe there could be if they were in separate circuits, at different phase angles or something, I'm not sure. Maybe there is an arrangement where you can get loads to drive themselves. This isn't it though.

Cogging...

Cogging isn't too hard to overcome, and my understanding is that in theory it doesn't add much friction - as sum attraction is zero. I thought I'd mention it though. I quite like the Muller/Romero idea of simply having one extra rotor piece - but I guess it means you need a separate rectifier on each pair of coils.

I think the key to making this generator OU is to
 a) minimise the flux from the coils that's 'visible' to the rotor.
 b) Make use of the coil's flux to (help) drive the rotor - via a separate mechanism.

Will post more in this in a bit... :)
Hi Tim
Unfortunatly the net attraction wont be zero,and lenz law will still apply.
When your steel (or ferrite)core on the rotor starts to leave the magnet/core arangment,the coil will induce a like field within the core to that of the magnet's.This will increase the strength of each magnet pole,and pull harder back on your rotor segment as it leave's the magnet.
So once you load the coil,lenz law will once again show up.

tim123

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #16 on: August 23, 2013, 09:42:44 AM »
Hi Tinman, yes, I know - I said that in the first post:
 "... in fact - there is a mechanism for a reaction against the rotor:
 - As the rotor approaches the stator, the coils cancel out the PM's field - thus no attraction on approach
 - As the rotor leaves the stator, the coils reinforce the PM's field - thus extra attraction on exit."

The point is: I think the part of the core near the PM will have a relatively constant flux - due to the (partial) saturation of the iron by the PM, whereas the part of the core away from the PM, the 'extension', will have the full variation of flux. As shown in the diagrams RTL-5.gif, and RTL-7.gif...

tinman

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #17 on: August 23, 2013, 01:11:24 PM »
Hi Tinman, yes, I know - I said that in the first post:
 "... in fact - there is a mechanism for a reaction against the rotor:
 - As the rotor approaches the stator, the coils cancel out the PM's field - thus no attraction on approach
 - As the rotor leaves the stator, the coils reinforce the PM's field - thus extra attraction on exit."

The point is: I think the part of the core near the PM will have a relatively constant flux - due to the (partial) saturation of the iron by the PM, whereas the part of the core away from the PM, the 'extension', will have the full variation of flux. As shown in the diagrams RTL-5.gif, and RTL-7.gif...
Well as i have found,the best way to find out is to build it and try it. Only then will you have the answers you seek.
You have many great idea's,and they deserve to be put into working devices. I know for one,that i will be trying that other design you came up with.

Brad

tim123

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #18 on: August 23, 2013, 02:11:19 PM »
Thanks Brad, I hope to come up with a few more too, hopefully at least one of them will be OU. :)

tinman

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #19 on: August 23, 2013, 03:10:01 PM »
Maybe use one of them design's as a pulse motor insted,and join in on the pulse motor build off.

tim123

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #20 on: August 23, 2013, 06:42:16 PM »
Hmmm, pulse motor build-off you say? Sounds like a challenge, and a laugh :)

Gimme a couple o months mate. I'm just finishing off the workshop. 6 months ago it was so bad I considered burying it, now, well, I might just move in...

I spent the afternoon reading about the 'Fifth Element' in Newtonian mechanics, and so now I reckon a pulse version of the fin-motor could be a goer:

"The Time Delay, on the other hand, is something quite phenomenal!  The mathematical form of the Time Delay element is in essence identical in form to the Resistance element -- except for an all important change in sign. If we assume the Time Delay factor (and the inductance or mass) to be positive quantities (which in anything remotely resembling classical or modern theories is true), then the Time Delay element implies nothing less than that there is a rate of energy being supplied TO the circuit FROM the external world!"
http://www.halexandria.org/dward124.htm


tim123

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Re: 'Rose-Tinted Lenz' Generator...
« Reply #21 on: August 26, 2013, 08:32:31 PM »
Short update:
 - In the stator, it's desirable to have two magnets per coil, in opposite polarities.
 - This means that the the coil will see a greater change in flux, and genuine opposite polarities, during the cycle.
 - Should mean a decent, useable amount of power out...
 - Can still use the same self-drive mechanism, as far as I can tell.
 
The stator cores have to be arranged a bit differently, with the 2 magnets either side of the coil. Diagrams attached. Side view on the left...

PS - the 'core extensions' - i.e. bulge on the side - is in 2 parts. There's a gap. Point being - the flux has to want to go thru the core - not just between the two magnets... Will maybe do a 3d drawing later...

PPS - Rotor has to go from one magnet to the next - without a gap...