Inverter building using Wiseguys Power board and the Nano drive board

Author	Message
poida Guru Joined: 02/02/2017 Location: Australia Posts: 1432	Posted: 01:12am 17 Jul 2024         Cpoc said   ..It’s an absolute brilliant design and very unique as I have never seen this feature in any inverter before. The 3kW Victron inverter I had drove two toroids in the same way as you describe. It's a great idea to reduce energy losses. Victron designs are "unique", but not in a good way. Another thing they do is they have the toroids wound in such a way there is a lot of leakage inductance. A lot. And this then permits them to avoid using chokes in the primary winding. The inverters work, well enough to last the warranty period, and then who cares right? that is their attitude. All the designs I have seen here on The Back Shed have toroids that are wound in a way to minimise leakage inductance and we take great pains to do this with perfectly even windings around the toroid core. Then we NEED the choke and we make sure the choke works well past any expected power levels. Our builds results show very low idle power loss. very low. Victron's toroids have windings where maybe 1/2 the toroid is uncovered by the outer winding. This makes for large leakage inductance.