Guru
Joined: 02/02/2017
Location: AustraliaPosts: 1404
| Posted: 07:07am 08 Jul 2018 |
I posted this, then went to the pool for a swim. 500m into 1500m I realised it was saturation.
I re-did the frequency test but with AC output voltage = 200 V RMS (instead of the above test using 230 V RMS)
No ugly things at 40Hz! Of course, it was saturation. Now ugly things happen at 34 Hz @ 200 V AC RMS
It's strange though, I see beginning signs of saturation when running this toroid
at 50 Hz and 230 V RMS. Not a lot but it clearly reduces as I increase frequency to 55 Hz.
It seems there is a little room for further optimisation of the inverters.
wronger than a phone book full of wrong phone numbers