Design of 3 phase ac to dc power supply

[COLOR=#333333]i am designing 3 phase power supply. out put from alternator is 28 v , 206.4 A , 100 hz , 0.8 pf..[/COLOR]
[COLOR=#333333]now i have to use a 3 phase rectifier . DC 28 V is needed at o/p. [/COLOR]

[COLOR=#333333]what is the output power after rectification . current also? formula??[/COLOR]
[COLOR=#333333]how to design a capacitor if we want max ripple voltage = 28mv?[/COLOR]
[COLOR=#333333]how to measure ripples(any cct)?[/COLOR]

[COLOR=#333333]thanks[/COLOR]

[QUOTE=usman umar;5623][COLOR=#333333]how to measure ripples?[/COLOR][COLOR=#333333][/COLOR][/QUOTE]

First you will need to invent the oscilloscope. :)

?? H:W

Without some very basic understanding of electricity, I don't see how you can design a power supply.
I suggest you get a book on the subject and do some serious reading first.
Then we can help.