I am considering to purchase a used industrial equipment running on 3 phase current.it`s a old industrial robot with servo motors i do not receive 3 phase current from the Hydro-electric company. before buying a phase converter, it is more expenses and i think that (perhaps it`s not needed!!) i consider this When i look at the schematic i realise that the electronic drive section receive 200 volt dc, somehow the 3 phases are blended . then the drive redistribute 3 phase to the motor,through some powerfull FET transistor, there is 6 of them bridged by 3 gang of 2. my question is: do the motor drive need 3 phases input to output 3 phases? can i connect the input transfo of the controller to a single phase current and let the drive somehow build it`s own 3 phases output?
thanks for your help Guy