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  1. #1
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    Design of filter in ac inverter output side

    An Inverter has the following voltage:
    vB (wt) = 100 sin wt +33 sin 3 wt + 20 sin 5 wt + 14 sin 7 wt + ....
    Design 1 piece of filter on the output side of ac inverter, where the filter consists of inductor (mounted series to inverter output and a R) and capacitor (parallel to R). determine the value of cut-off frequency, L value, C value and calculate the damped current of 50 hz
    Last edited by ads-ee; 7th December 2017 at 17:18. Reason: rmoved useless prefix in title

    •   Alt7th December 2017, 16:51

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  2. #2
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    Re: Design of filter in ac inverter output side

    Hi,

    vB (wt) = 100 sin wt +33 sin 3 wt + 20 sin 5 wt + 14 sin 7 wt + ....
    Why donīt you say "square wave" output?

    I see no filter (attenuation) specification, so I think you are free to choose values.

    But calculate the 50Hz according your chosen values.

    Klaus
    Please donīt contact me via PM, because there is no time to response to them. Thank you.



    •   Alt7th December 2017, 17:52

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  3. #3
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    Re: Design of filter in ac inverter output side

    If L is too large, it has the effect of restricting AC current. It reduces V to the load.
    If L or C is too small, it has meager effect on the square wave.



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