How can I solve this problem in my inverter?

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Ali Tahri

Is your system simulated with simpowersystem Toolbox? if the answer is yes try to adapt the Ron and snubber circuit components of the switches of the inverter

Hani Vahedi

where do you put the loads in a grid connected inverter?can you explain more?

maybe it is a rectifier, or active filter. but your figures show there is a problem in your controller that does not send proper signal to the modulator.

Morteza Shabanzadeh

Dear Omid,

I recommend you study the following manuscripts.

Regards,

http://mortezash.blogfa.com/

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Shrinivas Vadhiraj

i would suggest you to make some small corrections in the switching sequence, so that in an RL load after the L is charges it requires a path to discharge before next step starts. so keep this in mind and make the corresponding changes in the switching sequence.