I am trying to design an LC input filter with the following requirements:
-The input current peak to peak value should be limited to about 1A because it will be connected to a PV panel
-The output of the filter will be connected to a full bridge converter (with output transformer for isolation with the load). I want the converter to be voltage fed, so this is why I need the capacitor.
The topology is shown in the attached figure. Because of the full bridge, I know that the output current of the filter will be some kind of square wave, so a lot of higher order harmonics compared to the rather flat DC current that I want to draw from the solar panel.
I managed to determine the value of L and C via simulation but I would like to under build this more mathematically. So I am looking for the transfer function I_out/I_in. It's easy to find if the full bridge is replaced with an impedance, because than you can use a current divider. But I cannot find it in case of a complex switching network, such as the full bridge. Any help or clues are appreciated.