openinverter forum

I would like to implement the scheme of operation of two Leaf engines (4x4). Is it possible? How to make two motors work at the same time? Do you need some kind of matching scheme?

With oi, just link the 2 boards via can and map the throttle controls

Renegate2020 wrote: ↑Sat Jan 08, 2022 2:43 pm I would like to implement the scheme of operation of two Leaf engines (4x4). Is it possible? How to make two motors work at the same time? Do you need some kind of matching scheme?

You can use each channel from Prius throttle for its own inverter brain. First you make the rear drive come to torque. Then experiment when to apply the front one too. Should also set a deadband for regen too, so you dont lock up an axle...
You would not need two brake switches because that should be one action for both OIs.

One engine with regeneration, the other without regeneration?

Renegate2020 wrote: ↑Sat Jan 08, 2022 8:13 pm One engine with regeneration, the other without regeneration?

No, deadband means you need to taper regen down at small RPM before you come to a complete stop. You need to set that in both motors so no regen at low RPM that could cause your wheels to lock.

arber333 wrote: ↑Sat Jan 08, 2022 5:42 pm

You can use each channel from Prius throttle for its own inverter brain

while this dose work and is quite simple, there’s no redundancy for each controller!

2x controllers ARE redundancy in your case. And Johannes put in code a safety so that too fast throttle advance is ignored.
I agree if you use CAN bus throttle you can slave one inverter to the other and they will be perfectly synced.

CAN I do not use