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

[gotoluc]

Only 1 thing to say
!! FAIL !!

https://www.youtube.com/watch?v=ALg_9FR6egY

Sorry it's giving you a hard time mate!

I did make a drawing to show you how to get the best torque but for some reason you didn't build it that way

I guess something else is now being tested

Thanks for your time with this

Luc

[tinman]

Sorry it's giving you a hard time mate!

I did make a drawing to show you how to get the best torque but for some reason you didn't build it that way

I guess something else is now being tested

Thanks for your time with this

Luc

Well its much the same-just on a smaller scale. My laminated blocks are to small, but if I swap the stepper motor out for some free running bearings, then it spins up just fine-like yours. But this design has no torque-that much is true.

If I had of taken a little time to think about it, then I already have the most efficient motor of this type-that being the RT. The only difference between the two is your design has a lump ofstell laminates being pulled toward an electromagnet, and the RT has an electromagnet being pulled toward a lump of steel laminates. So the two are one in the same. But as we have seen, the RT is capable of far more torque, and using the flyback increases the efficiency by about 80%.

So in all reality, I have already done extensive testing on this type of motor


Brad.

[MagnaProp]

... the RT is capable of far more torque, and using the flyback increases the efficiency by about 80%....

80% total or 80% over what ever % the motor was before being turned into a RT? I'm guessing the latter.

[verpies]

Only 1 thing to say
!! FAIL !!
https://www.youtube.com/watch?v=ALg_9FR6egY

How large is the yellow gap in your design ?
Could you be closing the flux path through the yellow gap as depicted with the red flux lines ?

Are you using ferrite, solid steel, or laminated steel?  If it is the latter, then which way are the laminations oriented ?

I know you have 2 coils in your C-core.  Does their flux add or subtract?  ...in other words if the coils were free to slide left & right, would they attract or repel?

Are you using ferrite, solid steel, or laminated steel?  If it is the latter, then which way are the laminations oriented ?

[Jimboot]

Verpies I've been trying to get my head around what you said. Below is a screenshot from 2010 when I was working on the ossie motor. I assumed at the time the spikes were pulses from the reeds and the sine was from the spinning magnets. I have this wrong it seems? I thought that in a pulse situation a current would induced in the coil by the magnets when the dc pulse was not present. From memory that build had 4 coils but I'd have to go back and check.