Design of 3 phase ac to dc power supply

[usman umar]

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

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

thanks

[PinkertonD]

how to measure ripples?

First you will need to invent the oscilloscope.

??

[zeke]

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.