openinverter forum

Hello

I was wondering if anyone has tweaked Damien Prius Gen 3 Inverter Logic Board yet to run home appliances that work with 220v single phase. And what is the possibility of running a workshop with 400v 3-phase power out of the Gen 3 inverter.

Before being overly hopeful, if something like this is actually possible and with enough battery power; what is the maximum current/wattage I can safely draw out of the inverter for both:
- single phase 220v
- 3-ph 400v

I've done a single phase version of it for the Gen2 inverter: https://github.com/jsphuebner/stm32-island
It uses phase 1 and 3 and also the boost converter to keep DC link voltage constant. So it requires a battery voltage lower then mains peak, say below 300V.

You need to attach quite some magnetics to the output (I used one coil on each output) and some capacity thereafter to eat the spikes. Those magnetics will be the performance bottle neck

johu wrote: ↑Wed May 25, 2022 9:24 am I've done a single phase version of it for the Gen2 inverter: https://github.com/jsphuebner/stm32-island
It uses phase 1 and 3 and also the boost converter to keep DC link voltage constant. So it requires a battery voltage lower then mains peak, say below 300V.

You need to attach quite some magnetics to the output (I used one coil on each output) and some capacity thereafter to eat the spikes. Those magnetics will be the performance bottle neck

Great stuff johu, thank you for all this.

I was wondering with the right power magnetics, what would be the maximum expected amps/watts we can draw out of it..

johu wrote: ↑Wed May 25, 2022 9:24 am I've done a single phase version of it for the Gen2 inverter: https://github.com/jsphuebner/stm32-island
It uses phase 1 and 3 and also the boost converter to keep DC link voltage constant. So it requires a battery voltage lower then mains peak, say below 300V.

You need to attach quite some magnetics to the output (I used one coil on each output) and some capacity thereafter to eat the spikes. Those magnetics will be the performance bottle neck

Great to know and a source for me to read into more. I have three inverter-converter assemblies that are waiting for me, as well as a CVT from Gen 3 Prius's.

I was thinking lately, to only use one or more rectified synchronous (brushed) engine powered generators as inputs instead of a small engine (~9-18HP) driving the CVT for now to test. The brushed generators since wave is crappy looking, so would be nice to clean that up for starters and is easier to get moving forward on.

Should I bother getting parts from the Gen2's from the yard for use like say as inductors or capacitors to clean the output or like microwave oven transformers (MOT's) maybe as inductors as well since those are a 50-60Hz design?

Maybe the inverter-converter assembly inductors are a HF more design maybe I'm thinking and not so good for cleaning the output?

Any thoughts regarding to resuscitate this post? Also, newbie guidance is appreciated if I'm off course navigating this endeavor.