Sharing ideas on how to make a more efficent motor using Flyback (MODERATED)

[gotoluc]

what an ingenious fix and with hand tools yet.i would have needed a rotary table to make that piece.great video's and research.

Hi Bill,

Nice to see you have joined the forum.
Thanks for your comment

Luc

Luc has gone dark on this, I wonder if the final results are so good he doesn't know what to do now 

what if he's just blown away with his numbers, he's been advised to keep a lid on this for now

I'm still around, just been busy with a few things.
May have an update tomorrow.

Luc

[gotoluc]

Here is a video update.

Motor is now working perfectly. So now the load tests can begin so we can establish the (modified) motors efficiency. Then I will add the assist motor which will only be powered by the primary motors flyback and see if it helps boost the efficiency which is the main goal of this research.

Link to new video demo: https://www.youtube.com/watch?v=aXtkUfdlvRI

Thanks for your interest

Luc

[gyulasun]

Hi Luc,

Very good progress indeed, thanks for showing it. I would suggest one thing if you agree in connection with the load tests. You showed the 128 mA current draw from the 24.7 V input voltage for one of the 3 phases and showed also this current increased a little (to 132 mA or so) when you mechanically loaded the shaft.
What I would suggest is to make an adjustable and dependable mechanical load for the shaft, better than your fingers and set a given load on the shaft and logging the loaded rpm and current draw and THEN compare these data to the ones obtained with the assist motor also working. I guess your fingers and ears are 'calibrated' to a certain degree by your excellent experience but perhaps a better brake on the shaft with repeatable "grip" force would be better.      

Thanks,  Gyula

[gotoluc]

Hi Luc,

Very good progress indeed, thanks for showing it. I would suggest one thing if you agree in connection with the load tests. You showed the 128 mA current draw from the 24.7 V input voltage for one of the 3 phases and showed also this current increased a little (to 132 mA or so) when you mechanically loaded the shaft.
What I would suggest is to make an adjustable and dependable mechanical load for the shaft, better than your fingers and set a given load on the shaft and logging the loaded rpm and current draw and THEN compare these data to the ones obtained with the assist motor also working. I guess your fingers and ears are 'calibrated' to a certain degree by your excellent experience but perhaps a better brake on the shaft with repeatable "grip" force would be better.      

Thanks,  Gyula

Thanks for your post Gyula

You're right, the finger load test does not prove much but now that the motor is operating to my liking the next step is real load tests.

Stay tuned

Luc

[gotoluc]

Here is a quick video of the first load test using a RC motor as an AC alternator which is directly attached to the motor shaft.

I'm a bit at a lost as to how I can calculate the motor efficiency if there is no change to the input power when the alternator is put under load.

Link to video: https://www.youtube.com/watch?v=Xsgk6CRfMus

If someone can suggest how this can be done that would be helpful.

Thanks

Luc