Yes, like other replacement controllers for OEM controller/inverter assemblies.I thought the board Damien makes was to get the gs450h gearbox to work with the gs450h inverter without the rest of the car around it.
While the GS450h inverter could be used with any synchronous AC motor, no one is likely to do that. The reason for using the inverter from a GS450h is that it comes with the motors of a GS450h, is packaged to work with the GS450h transmission, and is electrically suitable for the GS450h.But as you explain it the board is to use the gs450h inverter and use any motor you want.
That's certainly the purpose.His board lets you use the GS450H inverter to drive the GS450h transaxle without having the rest of the car.
While that's possible, to be viable the encoder on the motor must be compatible with the controller's inputs, the voltage, current, and frequency ranges must all be compatible, and all of the tuning parameters must be appropriate to the motor. I'm not sure why anyone would go to the effort of working out this combination for anything but the inverter which the OEM provides with the motor.... or any other motor.
A motor is agnostic as to what's driving it. Voltage and waveform and it responds accordingly.