No, they can not be run in parallel without modifications. It can be done in two ways:i have been planning to build an electric car in the near future for a couple of months now, i was planing to do a direct drive duel netgain 9". i was thinking that four P&S controllers, two for each motor wired in parallel should give me 144v at 1000amps for each motor.
can controllers be wired in parallel to double the amps, or will the way they cut up the voltage cause them to interfere with each other?
Add paralleling inductors, you'll need about 100uH (preferably more), 500A inductor in series with each controller.
Or, you can modify the controllers to run synchronized, or off of one control board. You might still need some inductance in series with each controller depending on how you synchronize the controllers, but much less than in previous case, maybe ~1-5uH.
Yeswould it be possible to run both motors from the same 144v battery pack? Run the motors in parallel?