Is there a schematic with UPS? That would clarify everything. I'm designing a new inverter, to be used in UPS too, therefore my vested interest. What are the ratings of that UPS? Model # etc...The mfg may have complete docs on line.
constant current limiting is straight-forward with "chopper" or switching power supplies. Most CMC (current mode control) PWM ICs have current limiting built in. It simply turns of an active switch when output current hits a threshold, similar to constant current in linear regulator.
Load current has nothing to do with xfmr saturation. It's the volt-second imbalance cause by any dissymetry, D or Rds,on. Proto works but I want reliable design by anticipate potential problems. Current sensing and turning off the active switch at excessive current is probably the best way I...
If the two halves cyles don't have the same volt-second - which normally is the case - over time that will lead to xfmr saturation, so that oversizing the xfmr would not work? I've read about schemes for compensating xfmr saturation a long while back. I guess using a mix of CMC and VMC could...
Push-pull or H-Bridge converter in voltage mode control may suffer from xfmr saturation. H-bridge can use a DC-blocking cap to eliminate xfmr saturation. However at low source voltage and high current that is expensive. Are there better ways to assure non-saturation? Maybe via current...
