#### Submariner

##### Newbie

I built the rectifier from discrete components, it's worked well for several years but after a recent experience repairing a single phase 36vdc golf cart battery charger, that stopped charging due to a loose connection on the smoothing capacitor, I'm now wondering if the efficiency of my 3 phase charging system could be increased. Clearly not as much as a single phase, since the ripple would be much less but maybe still worthwhile.

I believe the formula for required capacitance for a single phase full wave rectifier is: C = (I * t) / V. where t is the half wave cycle time.

I've been unable to discover the formula for 3 phase full wave though, seems clear there would need to be an adjustment for "t". Maybe "t/3" ? Seems too easy.

Any thoughts or advice would be greatly appreciated.