Guru
Joined: 13/10/2014
Location: AustraliaPosts: 2282
| Posted: 12:54am 23 Mar 2026 |
As far as Toroid design, it will be the same as the Ozinverter design for a given expected operating, lowest input voltage, for your selected battery type.
Those look fine as starting point, primary side (inverter powerboard and choke input) is easy to adjust when testing starts.
Those chokes are not going to fly.
You want 4AWG around 21mm2 for for the chokes, this gives a little more protection for the FETS, and is easier to wind through the cores.
What is the Choke core material? should be a number on them somewhere. If we know what the cores are, we could suggest the correct number of turns for the required inductance.
EDIT: For your initial choke testing, you should just grab some 2 Gauge flex copper cable.
I used this for a long time on the chokes in testing without any problems, way less costly for testing and extra safety, depending on the cores, we aim for you around 17uH to 21uH with 4 to 6 turns of 2AWG, you would use two chokes for each inverter.
Mike.
.
Edited 2026-03-23 11:50 by KeepIS