Hi guys,,,

I am building a multilevel dc/dc converter with has four input power supplies each one of them is 30V total of 120V drawn a maximum load current for resistive load of 10A. i want to use a dc link capacitor across each power supply. my questions are:

1- why dc link capacitor important?

2- is it important in my application?

3- how do i choose a suitable value? which is better 100uf or 33000 uf?? or other values?

please advice

 

Post a schematic if possible and tell us for what you will use it and its power ratings.

 

It depends on the frequency of your converter. The capacitor supplies energy during the time the converter is not active. It is absolutely vital to the application.

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