all home built solar system

Author	Message
Murphy's friend Guru Joined: 04/10/2019 Location: Australia Posts: 674	Posted: 10:27am 11 Jan 2022       Sorry to read about your inverter misfortunes but I can assure you that membership to the inverter blowup club requires a few 'spark and bang' events   . You are most welcome now . Anyway, as Tony says, its most likely a hardware problem. The original OZinverter has had an occasional shoot through problem. Unfortunately the 'mad'inverter with its totem pole driver did not eliminate this. I have built both of them (but using my own PCB's) and had (club membership ) problems. Then I built the opto isolated nano inverter but using a totem pole driver based on wiseguy's ideas and that has been trouble free in both, a 3KW and a dual stack core 6KW version. I have a warpinverter too, its a novel design that works well but its also rather complex (and expensive) compared with a single transformer inverter. You either have to like (enjoy) winding 4 transformers by hand or pay somebody to do it for you before I would suggest you tackle one. How do you control the massive inrush currents of the big capacitors of your inverter? They *must* be slowly fully charged before you turn the nano control board on. And no AC load present at that time.