genetry inverters

I wish that was the problem.  Unfortunately, it doesn't seem to be.  I can see it on every inverter I have--just on the smaller ones, the issue is small enough that it doesn't matter.  PJ got away with it by having such a weak LF Driver that the FETs can't "slam" the tranny against the power rails--eliminating the EMI.  But the rounded drive waves cause significant FET heating--or blowing up at high loads, when their resistive "window" has more resistance than the tranny primary...

My experiments with ferrite beads on certain wires on the ribbon cable have thus far been completely successful at eliminating the noise on every inverter I've tested down here--but alas, they haven't exactly translated too well to Sean's bench with the 12kw...

So, the Mosfets is a AC Power?, and I can see the beads helping, because on high power lines, the closer they are and the higher the power the more you can have a magnetic induced electrical field that can bleed to anything around it, hence why they use glass insulators to keep anything from shorting out so easy.  Is it the rainbow calbe?  It would be nice if you could just make a board with pins to slot the main to the wifi and get rid of the cable all together. be funny, have a PCI slot on the main board, and on the wifi board on the lid, it has a card facing down that goins into the pci slot or pin terminal and then the lid get screwed down to hold it together, elemenating darn wires.

Just my thoughts 😛

Yeah, but the signals have to go about 3.5 inches from the mainboard to the control board--at best.  I've considered using long pin standoffs to directly connect the 2 PCBs--but they're unshielded, and would make a significant (unnecessary) design challenge.

We'll have to do something with a custom specialized cable and/or PCB design to resolve this issue (yes the ribbon cable is a large part of the issue.  Ribbon cables are for carrying data signals, not power!)  But hey, getting this far alone has been an exercise in solving issues--so I'm not giving up.

So does it get worse with lower voltage?  Most every demo Sean showes is at 48v.  Is 24V going to make things worse?

I just watch his Vid just now, and I've yet got a email. . .

Don't think so.  Higher voltages seem to make it slightly worse--not surprising, I suppose, if slew rate is considered.

One man vs 1,800lbs of inverters and a 7-page setup manual for each inverter...yeah, he isn't Superman yet.  If he could do one inverter per hour--and doesn't answer his phone or any emails, no distractions, nothing for anyone else--that's going to take him over 3 full 8-hour workdays to get 'em all done.  Much safer to figure 2-3 hours per unit.  But at least we have them.

I think I'm going to run the Master off of the Lithium  Batt bank and the slave is going to run off the 8 deep cycle confg to 24v.  Since the slave at the most will run about 30 min on a high load, that longest will be 2 hours I guess if I'm pushing running the dryer and the water heater kicks on while I'm cooking a pizza.

Right now I'm sitting at 13k just sitting int he room waiting to get used.  I will add probley another 7k to it shortly, but I think the slave should be fine off of the 4s lead deep cycle.  Rougly 200 ahm so that give me about 4.8kwh  Might buy a few more if it can't hold up.

Any Status update on the fixes, and the state of the firmware?  I got a email this morning and reply and havn't heard nothing since.

Firmware is decently usable, probably will need some refinement and tweaking, but the functions--for the most part--seem to be good to go.

Fixes just need another little check from me...but that's a lot harder now that I'm back to work full time on a huge house project.  Gotta pay the bills somehow.

We are hoping the inverters will ship by Friday.

*Biteing Finger Nails.*  Sean is being real hush, hush on the fix, and yet no reply to the email I sent out to him.  I hope he read the email before doing my invert.  I hate to get it and hook up the gen and blow both of them. . .  Oh The Wait!!!!  Are We there Yet? ?   *Grin*

Did some tests yesterday with the ferrites, they'll be fine.  Just need to make sure it's set up for you before it goes out...

So Sean did get my note about the gen setup?  Also, he didn't say if I'm getting both or just one, though the way he text me on my phone it was going to be both.

All inverters going out will get the beads on the mainboard.

Matt you have number 2 and number 24 so you will be in the first shipment going out, no worries there. I will call you soon to get everything lined up for you.

Sweet, I know your busy all the time :P.  Dang almost was Number 1!!! *cries*  and almost the Last. . . *Wipes tears away and sigh*

I updated my phone number on my account, but, don't know if it changed or not on the order.

Just got off the phone with Sean.  Everything is good, and my Inverters will get show time for Daisy chain and 24v load test :P.  Woohoo!!!