Bulgarian MEG Replication

[steadyfield]

Bulgarian MEG Replication

Hi everyone,
I'm steadyfield (from China). Recently I'm experimenting with the Bulgarian MEG device. (http://overunity.com/4300/a-truly-overunity-transformer-meg/#.WBni0FWUe2s)

A full bridge (H-Bridge) consists of 4 MOSFETs is used to drive the input coils. The PWM is generated by a dspic30f4011 MCU. The frequency and dutycycle of the PWM are adjustable on the MCU.

The 2 input coils are 40T+40T, the fluxes of the coils are aiding. The output coil is 80T. The loads are two 50 Ohms resistors connected in series. The permanent magnet is in the middle. I tried various magnets (ferrite, neodymium, AlNiCo), and no significant difference of performance was found.

At the switching frequency of Approx. 20KHz and 52.5% dutycycle, the COP is only 0.6 . When loaded, the input current DOES increase. When the magnet is removed, the output is gone. I wonder what is wrong with the replication.

The video will be uploaded soon.

Edit: The Video is uploaded here:
https://www.youtube.com/watch?v=Iz4POclJ8ws

[steadyfield]

More Images

[steadyfield]

Output Waveform.

[gyulasun]

Hi steadyfield,

Nice setup and instruments! It is good there is no output when you remove the magnet.
I wonder however on the need to change the direction of current in the input coils? from input core saturation point of view
it does not matter.
You change current to reset the B-H curve of the input core?

I ask this because first a half wave rectified current was used by the inventor at the input and he tuned the output coil with
a correct value capacitor to resonate it (so to say to regain the "missing" other half wave), and he still claimed to receive COP >1. 
Of course a half wave rectifier produces DC bias in the core, this need to be considered.
So try to tune the output coil to the input frequency first, (20 kHz) with a parallel capacitor, then try to tune it to 40 kHz and see
how the output power changes. 

One more thing: try to attach a single Neo magnet to the side of the input core to influence its saturation level and see how
the output power changes. Perhaps a second magnet on the opposite side of the core, facing the first 'tuning' magnet via
the core could also influence the saturation even more, hence the operation. 

Gyula

Bulgarian MEG Replication

Hi everyone,
I'm steadyfield (from China). Recently I'm experimenting with the Bulgarian MEG device. (http://overunity.com/4300/a-truly-overunity-transformer-meg/#.WBni0FWUe2s)

A full bridge (H-Bridge) consists of 4 MOSFETs is used to drive the input coils. The PWM is generated by a dspic30f4011 MCU. The frequency and dutycycle of the PWM are adjustable on the MCU.

The 2 input coils are 40T+40T, the fluxes of the coils are aiding. The output coil is 80T. The loads are two 50 Ohms resistors connected in series. The permanent magnet is in the middle. I tried various magnets (ferrite, neodymium, AlNiCo), and no significant difference of performance was found.

At the switching frequency of Approx. 20KHz and 52.5% dutycycle, the COP is only 0.6 . When loaded, the input current DOES increase. When the magnet is removed, the output is gone. I wonder what is wrong with the replication.

The video will be uploaded soon.

[gotoluc]

Question,


did you make this video which is on your youtube account: https://www.youtube.com/watch?v=yv53HgiWkmM


Thanks


Luc