Newbie
Joined: 05/07/2019
Location: ItalyPosts: 23
| Posted: 08:33pm 15 Feb 2021 |
Good evening everyone,
Thanks for your answers!
I realized that playing with the 400vdc is not a good thing.
I remember that in one of the many jobs done as a boy (electrician)
to have taken the 10kv of a transformer for neon.
I lost use of my arm for 20 minutes.
and my heart was not so happy.
I understood that the LF transformer acts as a dam also for any peaks or current draws bidirectional, mitigating based on core type and sizing.
naturally also as a filter based on inductance or capacity present before or after.
i used all three inverters, but the one LF will be the base like test bench for experiments as you did.
excellent Peter, thanks for the support,
i checked what i have as hardware:
3 x ir21844 are equal to 2184? I don't think they are the same.
and 2 x ir2110
the other components are easily found here and there.
however I cannot find the schematic of your breadboard.
seen up here:
https://www.thebackshed.com/forum/ViewTopic.php?TID=9409&P=13
can you describe the pattern if you still have it somewhere?
do the navoverter boards advance to anyone?
I read about your THD analysis at this link:
https://www.thebackshed.com/forum/ViewTopic.php?TID=9409&P=5#105260
"Time to look at waveform purity. I calculate the THD of this prototype inverter to be about 0.5% (50Hz 70db, 3rd 25db, 4th 25db, 5th 20db, 6th 20db) via the DSO's FFT.
Not too bad at all. "
great, but the DSO Rigol can give you the distortion percentage too?
I ask because within a few months I will have to buy it,
it is essential otherwise I have no objective feedback on the changes made and the debugging of the problems.
i own this to test distortion.
0.28% because I measured at the output of the hifi ps audio conditioner.
at the input I have 3-4%.
Ciao! A.