Black start with load. The PCS could restore the whole system with load automatically instead of switch off the load and on manually.
Multiple DC inputs with different voltage for large scale ESS. More DC inputs with different rated voltage could be connected to the PCS to get better utilization of different class of batteries.
Off-grid parallel connection of multiple units for large scale (MW) ESS. Auto-detection and operating as voltage or current source when more than one units are parallel connected to support large off-grid application.
As household electricity in regions without electricity, as family emergency
and backup power supply in electricity region.
System schematic diagram: