Regarding Filter capacitr and DC choke calculations

I am desingning 3 phase AC ddrive.

For that i am designing a rectifier module.
after this i want to desingn filter circuit wth DC choke

Can any one help me to in design calculations of filter

specifications are
415V -30/+15 ,50Hz,

o/p of rectifier is nominal volatge is 560
and capacitor value is 1500uf so for i hav selected
I got strucked in the selection of DC choke.

I want to know the calculations of filters and DC choke

Thanx in advance

egards
ramesh kumar reddy A