openinverter forum

I'm looking to run my Roadster drive unit using the open boards. But this motor is 'low impedance' compared to all other Tesla motors so the question would be does this make any difference in moderate performance and likely moderate pack voltage operation using open boards? And 'low impedance' is descriptive only as I've not yet discovered any specs for the Roadster motor.

Yes I belive you can. Using my method of tuning the motor you can get it running pretty good. However you will definitely require some desat and shootthrough protection. My motor is also low impedance which means it's winding resistance is very low. If you apply DC across winding igbt will feel short circuited. This is why energy must be used immediately. Minimal slip will be high and I expect max slip like 3x minimal.
I hear AC propulsion motor has Slovenian roots and is mostly copper rod core with copper rods in the rotor top layer and V shaped inserts underneath. That means even lower rotor resistance... Much like Stoja motor.

Ok, all new info to me (meaning not on TMclub) and thank you! I will need to research all this. Slovenian roots ^^ 8^))

Am I correct in assuming I will be using an open logic board to feed my oem final power stage IGBTs so that presumably this will, once again, be able to handle whatever the Tesla Roadster motor is demanding? That basically I will be replacing the Tesla logic board (within the PEM) with a new open logic board?

If Tesla would only knock off a couple dozen new replacement battery packs to support their classic car I would not be here seeking alternative ( . . violins playing in background).
--

thevincentrapide wrote: ↑Sun Jan 19, 2020 8:02 pm Am I correct in assuming I will be using an open logic board to feed my oem final power stage IGBTs so that presumably this will, once again, be able to handle whatever the Tesla Roadster motor is demanding? That basically I will be replacing the Tesla logic board (within the PEM) with a new open logic board?
--

Well i am not sure what kind of inverter roadster was using. They could be using some obsolete control or driver chips. Those are better to be avoided.
Maybe you can use something like both sides of Chevy Volt inverter to power up to 1000Arms to the motor .

> both sides of Chevy Volt inverter to power up to 1000Arms to the motor [arber333]

So you propose using 2 Volt inverters in parallel? But the Tesla Roadster is much more than twice as powerful as the Volt, and there are limits to my ability to drive with restraint.

I will get info on my car's IGBT circuitry.
--