Can I use aluminium electrolytic capacitor after a full bridge rectifier?
My operation frequency is 200 kHz with output voltage of 100 V.
Based on this paper: "Analysis and Design of Load-Independent Output Current or Output Voltage of a Three-Coil Wireless Power Transfer System", the author has used 940 micro farad output capacitor, which is confusing for me also.
Based on the specifications of the following paper I = 4 A, F = 200 Khz, by assuming Vpp = 1V and using the formula C = I / 2 x f x Vpp, I get C = 10 µF
Please correct me I have miscalculated.
However my calculation is pretty different as can been seen from the value shown in the mentioned paper. Since this paper is IEEE transaction paper I have decided to trust it and use 940 uF capacitor after full bridge rectifier.
As far as I know film capacitor have very good performance in high frequency application however a big size of DC film capactitor (940 uF) is very costly.
Can I use an electrolytic capacitor instead?
I believe aluminium electrolytic capacitors vary significantly with increasing frequency. I have confusion in selection of polarized filter capacitor.
What other type of capacitor is suitable?