outback vs trace
I have replaced 2 stacked sw5548 inverters on a 12 kw battery backed up pv system with 4 fx3648 outback inverters. The trace inverters worked ok but thermally shutdown if the output was more than 9.5kw for more than a hour. Result is that the 4 outbacks are worse! With 11.5kw from the PV's the traces would output about 10.4 kw, the 4 outbacks top out at 9.5 KW. The output current waveform of the outbacks is not sinesoidal and they have present a huge amount of ripple current th the batteries. Whats going on here?