Muller Dynamo

[energia9]

Well Done! Keep the nice work up! this is a new age for sure, The age of no lies start from here RIGHT NOW!!!!  SCREW THE GOVERNMENT!!

[nul-points]

SCREW THE GOVERNMENT!!

LOL

...clockwise ...or anticlockwise? 

[poynt99]

NP,

For constant power to a given load, post DC-DC works best.

But I agree, for the best efficiency of power transfer to the load, it should be placed pre DC-DC, as long as the load can handle the worst-case power surge possible going into it.

.99

[nul-points]

NP,

For constant power to a given load, post DC-DC works best.

But I agree, for the best efficiency of power transfer to the load, it should be placed pre DC-DC, as long as the load can handle the worst-case power surge possible going into it.

.99

yep, i agree completely

in the device as shown, any 'power surges' are most likely to come from instability in the input drive to the coils

since we're using a DC-DC convertor to prevent instability in the drive 'motor' we are significantly reducing the chances of power surges to the load

therefore i believe that in this case we can re-position the load before the converter -and improve the COP!

hopefully i've given a fair summary of the situation

thanks
np


http://docsfreelunch.blogspot.com

[khabe]

Yeah, this kind of experiments I like,
Especially when well done mechanics, no cheesy and krooked shafts, no flapping and fluttering rotors.
When you like to use smaller bearings for less friction then you need to turn shaft ends, where bearings are, for this smaller diameter,  shaft itself must to be adequate for large rotor.
Some comments about posts I did read:
Pole/slot (coils) combination is far not Muller´s invention, for motor builders  this is well known trick to reduce cogging torque, this principle is known more than 20 years, mostly for 3-phase motors, but also for one phase generators.
I wonder  you are fearfully stucked on  9 coil / 8 magnets arrangement … you can use any combination like  - 9/10, 11/10, 11/12 … 19/18, 19/20 … 25/24, 25/26 … 39/38, 39/40 … 79/80 … 111/112 â€" what ever ...

Litz wire (stranded enamelled copper) …  like for every wire -  the cross are is decisive,
When Litz wire then sum of kross areas of all strands.
I added  chart (Hr. Dr. Ralph Okon, www.powercroco.de)  you can find diameter of wire, cross area, … and maximun current for this wire, This  is for „normal motor” builders  , most of all for RC motors, where not so much turns (read it: wire lenght) and where is very good air cooling because huge air flow from propeller ... As I see you have 300 turns ... oh dear, you must to use bit thicker wire as on this chart.
About Litz (stranded wire) there have been long time discussion about by motor builders, many good motor builders does not like it, but myself I do, I use near everywhere Litz because lower losses and because easier to wind. In principle Litz or multistranded wire  is strongly necessary only when air-cap motors(generators) where magnets direct act to WIRE, where no iron core - there moving magnet causes huge Eddy losses when thick wire  (maximum diameter of wire for air-cap motors(generators) where no detectable eddy losses is 0.2mm).
You have iron core machine, so ... Litz is good but not by all means necessary.

Im not here to discuss about works this Muller as real OU or not ...
There is one more similar  http://www.youtube.com/watch?v=70E0Q_pCB-4&feature=related
this one yopu do not like ? 

cheers,
khabe