2 pole filter in a converter and ripples in output voltage

Is two pole filter is the reason we cant find ripples in the output voltage?

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Thread Starter

jibranejaz

Joined Oct 23, 2017
1
Does two pole filter in a buck or any other converter and use of small ripple approximation is the reason why we cant find ripples in output voltage?
For example in a buck converter Buck.PNG
when I use small ripple approximation i am unable to find ripples in output voltage Vc(t). Is that due to two pole filter at the output? if so is the case, will i be unable to find ripples in H-Bridge H-Bridge.PNG
and current fed bridge Current fed.PNG
using small ripple approximation because there's a two pole filter at the output?
 
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