For a fixed power supply capacity (watts or VA), if you double the voltage the supply can only deliver half the current before blowing fuses (or going up in smoke if badly designed).
On the other hand, if you double the voltage to the load (motors), they will draw double the current (4x the power) - unless you use a chopper driver with current limiting, in which case the motors will draw half the current at double the voltage (same power as before).
I'm not completely sure about the chopper drive current consumption, but logic tells me it should work that way.
Arvid |