Electrical requirements for 3ph IR lamps
Your controller should have a safety factor of 50%, so 9000 x15 x1.5 = 202,500 watts

This may be a bit high, as 27 x 240 is only 6480 watts (P = IxE)

Medical marijuana? Runway lighting? Rose bowl lighting?

This doesn't seem like a home application...  expect to defend WHY you need this or the question may get put on hold