the inverter was just and example, what i meant was in general.It depends on how many killowatts the inverter inverts. Sometimes it is just too wasteful to use a diode. A better method might be to use a polarized connector so nobody can plug it in backwards.
So what solution is there in such casesIf you are trying to feed 30 amps DC into the load, the diode will be large and wasteful.
That's the way most commercial products do it.Even simpler, a fuse first and a diode that is arranged to short circuit any backward polarity that suddenly arrives at the input terminals. This method eliminates the need to calibrate a crowbar circuit to the expected input voltage.
would be interestingThere are other ways, like a relay, a PTC thermistor, and mosfet switches. Would you like to discuss those methods?