Hey CoinHead, I'm thinking you're the guy from the Prius forums who hooked up the MidNite Classic 250 charge controller using a wind profile to charge your home battery bank.
"Prius as backup generator with midnight classic as voltage converter possible?"
It's because both of you seem to be from Hawaii anyways... Anyways, nice to meet you (whether you're the same guy or not), I am also a Prius owner (my brother owns a Tesla which he lets me drive all the time so can I post here hehe...), my Prius is a 2018 and I currently use a SURT6000XLT UPS for backup power.
I just bought a Midnite Classic 250 the other day which has not arrived yet (a toy I want to play with). I have also been toying with the idea of this SolarCity Delta H6 as a battery-less inverter to run off the Prius for hopefully enough surge power to start my 230v/14.5a air compressor (the APC won't start it even with a soft-starter on the motor), and then I encountered this thread so I had to sign up to see if I could have a discussion with you about it.
I read through this entire thread, and it looks like you are having issues with the H6's AFCI (arc fault detection) on the PV circuit.
Have you seen these articles?
https://www.solaredge.com/sites/default/files/arc_fault_detection_application_note_na.pdf
https://www.solaredge.com/sites/default/files/arc_fault_detection_application_note.pdf
Do you have the app to control the inverter? It sounds like it might be possible to disable the AFCI 'feature'...
If it was possible, I wonder if it could be a workaround to get the Prius to work on the PV input.
I also had another couple questions about the Midnite Classic 250...
I was wondering if you ever toyed around with U-SET Voc % (percentage of Voc, to narrow the MPPT scan range), instead of using wind curves, and maybe you found the wind curves was the only way to do it?
It seems to me on the Prius, Voc test check would always pull the current Prius battery voltage, and it could be useful to set U-SET narrow the scan window. Like I was thinking of figuring out far the Prius battery voltage would drop if you pulled 62a from it, and then calculate that as the percentage of voltage drop, so then even if MPPT tried to pull it all the way down it could only hit the bottom of the U-SET percentage window and never be more than 62a (the MC 250's short circuit current max). The other question I had which is related to this, is will the MC 250 try to pull more than 62a and potentially blow itself up, or does it have overcurrent protections built-in to only pull the voltage down to its maximum current limit (I will still put a breaker on the PV circuit just for safety)...
View attachment 617770