That's pretty common with the GFCI Circuits. There are certain brands that seem to trip a lot more than others, its common on anything with the VFD or variable speed. We don't have any information as to what brands work and what doesn't, but this involves the sensitivity of the GFCI. Reportedly, commercial GFCI are less sensitive and are thus more tolerant.
Addendum: We've discovered that with VFD operated machines the VFD may, depending on the brand dump electrical noise into the circuit and this is what trips the VFD. For the Delta VFD there is a jumper that may be removed to prevent this from happening.