Rather a lot depends on if we are talking single phase or three phase.
If either the input rectifier or load on the dc link capacitors is three phase, its a totally different situation to having a single phase rectifier link input, or single phase inverter load.
At your power level, a motor drive will almost certainly have a three phase power source, so ripple voltage and ripple current will be much less and at a higher frequency.
If the motor was not a nasty reactive load, you might even get away with having almost no dc link capacitance. The worst situation in a motor drive might be dynamic braking, where motor inertia tries to over speed the drive during slow down, and tries to drive up the link voltage.
So the link capacitors are there to stabilise the link voltage under transient motor conditions rather than filter out rectifier ripple current.
The situation is very complex and probably defies strict formal analysis.
Its probably (?) more a case of sizing capacitors from experience, and noting what other drive manufacturers have found to work reliably at similar power levels.
I have repaired a great many drives over the years, and am often surprised at how small the link capacitors are, considering the power levels involved.