FUELLESS CAR PROTOTYPE by ISMAEL MOTOR

[Magluvin]

@MileHigh

I am very familiar with electronics too.


I've just finished soldering my coil shorting module.

Nice Kehyo

But didnt Ismael say that there were shorting transistors in parallel to get down to .0028 ohm shorting resistance?  Unless you are trying something else.

Good to see someone doing it.  ;]

Mags

[kEhYo77]

Thanks Magluvin.


This module is capable of driving many parallel MOSFETs or IGBTs.
Peak driver current is 9A. I've got really good IGBTs right now and paralleling them might not be necessery
as it all comes down to low resistance of the shorting "contact" according to Ismael. IGBTs are better in that respect.
My thoughts on this is the dv/dt switching time plays even more important role than the really low resistance.
With this config I am able to short ends of a coil with a  potential difference of 1000V with 25ns rise/fall time
Anyway we will see...

[Magluvin]

Nice.  ;]

Will it be shorting multiple times near or at the peak?

Mags

[kEhYo77]

Yes, multiple times with a freely adjustable time window starting at any given point on a sine wave.
Easy to implement when you are dealing with constant frequency using some zero crossing detection circuit triggering hardware interrupt on arduino...
Piece of cake

[Magluvin]

Yes, multiple times with a freely adjustable time window starting at any given point on a sine wave.
Easy to implement when you are dealing with constant frequency using some zero crossing detection circuit triggering hardware interrupt on arduino...
Piece of cake

Ive been wanting to try one of those Arduino. RS has 2 kits. Maybe Ill grab one to check them out.

Cant wait to see what you come up with.  Good luck.  ;]

Mags