The VFD would only see its 230V max, the transformer and motor would be the only things to see the 575...3 phase 208 to 575 transformers are available. The VFD can output sufficient power (volt amps, VA), just not at high enough voltage to push max amps though the motor windings. Voila instant derating of HP in the motor. You trade volts for amps via a transformer. It WILL work, but MAY NOT be the cheapest alternative. Choose a 3 phase 208/230V to 575 transformer of the same or larger kVA as the VFD/motor, wire the output of the VFD to the line/input of the transformer, and wire the motor to the output/.load side of the transformer. This happens in my world (petrochemical instrument/electrical) all the time as 480V generators are widely available but when we have to power down a 2400V or 4160V motor control center and keep a pump running, we have to put a transformer between the 480V generator and the 4160 pump motor. Transformers don't care about frequency so long as there is some (they don't work on DC) as they pass frequency straight through. Again, it will work, but might not be the cheapest alternative. Shop around and see...