csc said:
Soon I'll check what happens with 24 F qs273 4000 on the rear and an mxus v3 on the front. Batteries (20s 36p, panasonic pf) might become the limit, taking the hypothesis of tires still able to grip when I'll wot (in fact I see in advance that it's gonna be quite funky)
Your QS ought to do quite nicely at well over the factory spec'd 4kw. I know a guy with a V4 doing well over 20kw. He has a 5kw v4 QS that gets peaks of 72kw...not really useful long term, but still...that's impressive.
I'm toying with the idea...no actual action yet.
The controller is limited by heat build-up.
The shell can dump heat at it's size only so quickly.
More heat sinking at the heat spreaders and the mosfets can deal out more amperage and live.
What I'm toying with is adding external heat spreaders.
This will allow me to add a much larger heat sink under the controller.
The controller would remain exactly as is from Nucular.
Nothing added would change the controller in any way.
It would all bolt on right in place where the current heat spreader screws are now.
After that, cooling can be expanded any way you like.
I'm thinking a water jacket, pump and radiator.
There's no reason the mosfets can't deal with 500 phase amps continuous if they stay cool.
Hey Vasilli,
This is another shameless plug for a 150v version.
Someone I know is Russia is running a 150v Kelly and doing 500 phase amps at 134v. He tops out at 200 km/h and 0-100 in 4.3 seconds. Admittedly it is an isolated sinusoidal controller and not FOC. There's lots of untapped potential in your controller designs for more of everything.