Muller Dynamo

[yssuraxu_697]

Working principle in my mind is this:

When signal A is modulated with signal B one can load the signal B without loading the signal A or vice versa.

All it takes is low or high pass filer. I have done this with coil shorting setup - loading the system with zero reflection on input. In coil shorting A is low freq and B is high freq. And B is extracted using high pass filter w/o loading the signal A (input).

Now in this case signal A is signals from single coils (freq is 9*rpm), and signal B is interference picture from all the coils combined (freq is 1*rpm). There forms a rotating wavefront with same frequency as device rpm. So the A is high freq and B is low freq. Low pass filter is applied and signal is loaded w/o reflection on the signal A (input).

Low pass filter is that huge cap romerouk is using.

PS. F-finger to tech suppression "community"

[Magluvin]

They cannot be in series, as the gen coils are not all generating 1 polarity at the same time.   Wont work.  ;]

Mags

[toranarod]

Was thinking a little about the drive circuit. Don't know for sure, but this design may give a maximum theoretical output of 200%. I saw some suggestion to that effect in some of Muller's stuff, and that appears to be where RomeroUK is once losses are accounted for. In order to get the output power levels to meaningful levels then, the drive levels are going to have to be raised as the output load is increased. Probably only two good ways to do that: 1) increase drive voltage, and/or 2) increase drive pulse width.

This looks like a super candidate for a micro-controller, which might also simplify the drive pulse management. Rather than hall effect sensors and trigger magnets, it might make sense to move to an encoder and quadrature input. With sufficient encoder resolution, you could very accurately control drive pulses to increase power. Could also use the micro to control supply voltage, allowing the supply voltage to increase when you needed more output.

Yeah, that's raising the level of difficultly to a 9.9...but I am licking my chops to jump into that.

I developed this micro controller for my pulse motors and I am going to use it for this one too. 

[Ren]

Good stuff guys.

Romero, love your work. Look forward to tinkering with a similar setup soon.

Forgive me if this has been asked before, but have you tried bridge rectifiers over your drive circuits, instead of the diode back to source?


Thanks for all your info.

Regards

[LtBolo]

I developed this micro controller for my pulse motors and I am going to use it for this one too.

PIC? That should do nicely.

By bringing the Hall effect sensor into a discrete input on the PIC, you can use it as a simple reference and synthesize the actual drive pulses anywhere you want to put them. That should give you a big advantage when tuning.