Is there smart people who can explain if there is chance that can go wrong?

Like this VESC is rated for 300A continuous, but what are we talking about here? Phase amps or battery amps?
Who care about phase amps? I mean, most who want fast acceleration for their small e-motorcycle or go-kart ...

As I'm not enough electronically inclined to hack a Honda or Outlander inverter, I plan to take the road of the VESC controller.
The VESC 75v 300A model seem to fit well to drive Leaf or Kona EV motor at low power (5-15 kW) and low rpm (caused of 58V nominal battery).
MK3 model or MK4 model, I don't ...

Awesome!!
Romale I can't imagine what I could do if I had only 50% of the knowledge/capacity you have to reuse inverter
I have to look closely at those Honda or Outlander inverter before spending $ on new lower quality inverter.

The leaf motor will do much more than that voltage in regen. There are high voltage options for vesc but not off the shelf, diy route, some shared. It's also a very low ohm motor for a common vesc. I'd be very surprised if an off the shelf vesc lasted very long driving a leaf motor.
Wow! Really ...

arber333 wrote: ↑Sat Apr 05, 2025 9:52 am Resolver is redundant there as long you dont need absolute position of the blades.

Yes, a prop in the water don't need great torque control.
So, sensorless can work fairly well according to you?

Why not just run a Hv mppt
I'm open to suggestion.
But from what I know, reliable stuff only exist for 12V-48V.
I know there is HV inverter with integrated MPPT, but it's clearly not a way I would like to go.

Then, with an HV battery, MPPT is a challenge, but also inverter, charger, fuses, etc ...

VESC project?
Wooh! Sexy, compact and affordable for the 75V 300A. Thanks to share.
Can probably output the 5-10 kW continuous/ motor for your needs.
Those will spin a Leaf motor without too much challenge? Sensorless? Resolver signal?
Also, based on a 58V battery (up to 66V) is it better to pick ...

So at 400A it'll drop 0.8V where an IGBT will always drop around 2V. So yeah, at least double the losses. Also what I observed in various experiments. MOSFETs almost did not heat up where IGBTs did.
This point alone will probably keep me away from the Leaf inverter and the openinverter control ...

split the battery into multiple 58V modules that each have their own MPPT controller, then put them in series for the motor?
Sound like the best way to end with batteries at different SOC :?
Really, I don't need high power because anyway I will not have a lot of energy, and I also don't need ...

johu wrote: ↑Thu Apr 03, 2025 6:18 pm By controller you mean

Yes.
I should have written: Do you think this can be done with the Leaf controller + openinverter control board?

So you would think, ah, no problem at 58V it can do 26 kW at 750 rpm. Thing is it can only do so short term as it runs around 400A per phase. Half that, *may* work continuously. I wouldn't go as far as saying no way here but it's a gamble.

This is exactly my thought. And that ''may'' work ...

tom91 wrote: ↑Thu Apr 03, 2025 5:36 pm So no idea what the rpm/V curve is

What I found is this data and this graph.
With 1/6 of the voltage I don't know why it could not output 1/6 the power.

Why that low a voltage?

To stay compatible with all the popular 48V solar stuff (MPPT, charger, inverter, etc).
Even if you use an open inverter board in the nissan leaf inverter, to allow such a low voltage.

Interesting!
Simply based on the motor, if a 40 lbs motor (ME1507) can output around ...

Hi

I'm looking to a way to use 2 Leaf motors to move a 45ft Cat.
I have experience with conversion, EV and battery in general, but not much with hacking controller.
https://www.thesamba.com/vw/forum/viewtopic.php?p=9146376
http://www.evalbum.com/4155

So, my goal is to have two 10-20 kW motors ...