So to address your question, I would recommend you run the motor in a YY 2.2kW mode only (high speed wiring). You can either directly wire the motor to the VFD motor terminals or just not use the low speed motor setting, you would use a VFD speed pot to adjust the motor speed. You do not need to oversize the VFD, but I would look for a 3 Hp VFD that can output at least 10-12A in normal or heavy duty mode. You will want a power disconnect and possibly an E-Stop, to run the motor you use the VFD low voltage inputs and setup the VFD to run in only one direction. Typically once setup you want to autotune the VFD motor, this can typically be done statically or with motion, the latter should be done with the blade removed. You can vary the motor speed with the speed pot, HP will diminish in a somewhat linear fashion proportional to the change in Hz from the motor's base frequency of 60 Hz. So at 30 Hz you would have around 1.5 Hp, I do not recommend going below this. Almost all VFD's allow some form of scaling on the display so you could scale it for something like motor RPM or SFM of the blade.
Many VFD's can be setup for two different motor types/parameters, but in this situation it is not worth the effort/complexity, I also have had more tuning issues with these type of dual speed motors and VFD's.
The Teco L510 is a low cost simple VFD, the L510-203-H1-U is single phase input and can output 10.5A in constant torque. This VFD does not allow for an external braking resistor, so would not be recommended if you wanted the blade to stop quickly. Depending on the blade retaining system, stopping a blade too quickly could cause a threaded retaining system to loosen.
The Fuji Electric FRN0012C2S-7U is single phase input and can output 12A in constant torque and does support an external braking resistor.
The above VFD's are NEMA 1 enclosures so would need to go into a cabinet or electrical enclosure, if you want a dust proof Nema 4/4X/12 type with a power disconnect you might look at something like the Teco E510 series. Teco, E510-203-H1FN4S-U 3 HP, single phase input 230 Volts, NEMA 4/4X/12. output 10.5A in constant torque mode. This series can be used with an external braking resistor.