buck converter capacitor value issue

[Rajnaveen]

Hi friends ,
I am using an inductor of 150uH with 4700uf DC cap in input as well as output capcitor in a 5KW buck converter .
But i am not getting proper current wave at inductor the waveform of current is distorted and inductor is making noise . the core is vibrating severly . Is it due to over capacitance or anything alse ? please help me

 

[KlausST]

Hi,

What waveform?
Is it a sinusoid output? If so, then a 4700uF DC capacitor is the wrong selection.

Klaus

 

[D.A.(Tony)Stewart]

Ensure there is no DC current thru inductor with proper bridge. Otherwise saturation currents will be excessive.

How many Tesla did you calculate?

 

[Rajnaveen]

Sunnyskyguy
I do not know exactly about tesla, and yes there is no dc current through inductor .

 

[malli_1729]

Current waveform distorted means " It is not Linearly rising and falling ".......in what shape....