On a side note. I asked this question in another thread with no responce.
Can you use a VFD as a voltage balancer on a RPC?
Basicaly can you use a VFD with a single phase input. Output wired to a stand alone 3 phase motor. 60 hz run frequency and use the output as a CNC balanced RPC?
As I understand it the VFD would supply a constant voltage to all three legs regardless of the draw. (So long as the draw is within the design limits of the VFD). The purpose of the idler motor would be to smooth out the wave form of the VFD output to better source the CNC.
Will this work?? I have one CNC machine that uses two of the phases for controller power(one phase PC one phase servo power). When I start any other machine in my shop this particular CNC Faults with a power drop. My current converter motor is a 15 hp. All I'm running at the moment is a 8KVA CNC Wire EDM, supermax CNC Mill with 3HP spindle, and a 2HP surface grinder.
Regards,
Heli |