Forgive my search skills, I'm sure there must be Ad Nausium posts, but I can't seem to find the difference, (besides cost), an AC motor wih VFD vs a DC motor with PWM.
Long story short, I'm replacing my .75HP lathe motor (that just died), with a 2HP motor, should I go AC or DC?
I have 220V single phase available, and my research shows that an AC variable speed set-up woud be around $700~1,000 drive and motor vs $1,200~1,600 for a DC setup? Is a DC drive worth the 25~40% investment over AC?
If I understand correctly, both AC and DC motors can be controlled by their respective drives and maintain a constant or rather, a higher tourqe curve? at lower RPMs?
Thank's for links, insites.
Chazz