Hey Dennis,
this is often misunderstood: A “2.2 kW VFD” does not mean that it provides 2.2 kW output power, but the 2.2 kW mean “A VFD for a spindle that delivers 2.2 kW mechanical power at the shaft”. Such a VFD usually can draw up to 5 kVA. This is how you come to the rated 24 A (VT mode) 22 A (CT mode). See here for example calculation of spindle power. See also the “capacity” in VFD datasheet: The 2.2 kW model is the AB022 and it delivers 3.8 – 4.5 kVA in continuous duty mode, add the efficiency loss of the VFD itself so you come to 5 kVA input power so this explains why you need 22 A / 24 A (and the EMI filter should be rated this value plus reserve)
According to my VFD manual, the EMI filter that matches the 2.2 kW version is:
I have the Schaffner brand. Here you can see the EMI filter datasheet