Various aspects of home brew inverters

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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 11:40am 10 Mar 2017      

Well done Poida.

It seems the transformer, and the components immediately around the transformer can have multiple resonances with various amounts of coupling and damping, also influenced by the nature of any inverter output load.
Its all a bit of a dog's breakfast and very difficult to analyse.

Adding our primary snubber inductor will also influence all of that as we already know.

Looking at the awful waveforms coming straight off the grid, I would not lose any sleep over a few low amplitude wiggles.
Cheers,  Tony.