What he said. That's the way to do it and regen would not be an issue.
Originally Posted by Besoeker
But just to explain it a bit further, motors on VFDs can regen at any speed because the VFD is capable of giving it a "virtual" synchronous speed that is lower than the driven speed. But if nothing tells the VFD to do that, then nothing happens. If drive 2 is following the torque of drive 1, how would that ever happen?
Rhetorical question, it wouldn't.
"Dear future generations: Please accept our apologies. We were rolling drunk on petroleum."
— Kilgore Trout (via Kurt Vonnegut)