LC filter design for Single phase inverter

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imrankhanPNU

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i want to design LC filter for my inverter..
Pwm=50kHz
f=50Hz
Vdc=250v
i=2A.
Please help in regarding formula for defining L and C values ..
Thanks in advance.
 

Hello,

I made 3 phase pure sine wave inverter as my FYP a few years back. Use the following formulas:-


If more power is needed than make sure you get high amperes rating inductors.
Good Luck!
 
The aim is to filter out frequencies above 80 or 90 Hz.
If L value is too high it reduces amplitude to your load. Select C so it assists filtering action above 80 or 90 Hz.

You'll find you must adjust L:C ratio to suit the load. The greater the Ampere load, the less the LC ratio.

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The same question is discussed in this recent thread. See if your own setup might suit the approach discussed there.

https://www.edaboard.com/showthread.php?t=375327
 
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