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[SOLVED] noise in zero crossing sinewave inverter

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freeman3020

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Hi all

I just finished my inverter design , but the problem remaining there is some noise in zero crossing of wave as attached file

how to solve it

IMG_1026.JPG

IMG_1027.JPG
 

Hi
Like so often ... it is impossible to give good assistance if we don't have sufficient information.
Most probably it is a problem of the code or the hardware.

--> show us your code and your hardware schematic.

Klaus
 

Adding; although it is perfectly possible to get around (or minimize) the problem by acting on its effect, the most advisable is to act on its cause.
 

maybe increasing filter capacitor solve this problem or check the output filter design. Little improvement can solve this problem if there is no problem in operating section.
 

Thanks all

I solved my problem , in lookup table there is large gap between zero value and first value of pulse width
 

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