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3-Phase rectification & Ripple

I need a formula to calculate the AC ripple for an unfiltered 3-Phase Bridge ( 6 pulse ). The only formulas I can find are for circuits with a smoothing capacitor.

Maybe I could just use an ungodly small capacitor for the calculation...?? :confused:

The final intent of this exercise is to be able to measure the ripple to determine the health of the diode bridge. The supply is variable 0 - 300 VDC.

Advise is a dangerous gift, even from the wise to the wise.

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