We had a catastrophic failure today on a VESC 75/300 based unit (3rd party not Trampa). It happened during a long (10 minute) regen when the as5047 encoder became disconnected (unplugged) whilst we were commanding a brake current of 10A, I don't know if the encoder disconnection was the cause or just a coincidence as I only noticed after the fire had stopped. Battery was at 60v and regen voltage was significantly lower.
All but 3 of 18 fets burnt out which suggests a shoot through.
The unit has been working perfectly for 18 months, I'm not sure the exact firmware revision but it hasn't been updated for that time.
Any thoughts as to whether a disconnected encoder could trigger a shoot through? Thanks for you help.
What exact esc is this. You got a link or picture?
It was (or at least looks like) a clone of your original a200s, I think it was a hi200
https://www.makerx-tech.com/products/go-foc-hi200-hi100-75v-200a-esc-bas...
I didn't realise your esc existed at the time.