Just found Inverter Drive Supermarket they dont list a 240V input with 400V output 3ph.
That means wiring direct to motor at 220V 3ph and figuring the switches out wiring to inverter. Its a cheaper way and could go VFD as most do.
Got a link to that Boost Energy?
Thats a neat looking set-up burdekin, dro's and everything. Plenty of room too, have fun making swarf.
Rdg tools i find good, google them.