30
Scenario D: PV power is not available, and the utility is available.
（
D-1
）
PV
Utility
Input:
Solar only
Output:
Inverter Priority
❶
The battery supplies the load alone.
❷
When V
Battery
≤
V
LVD
, the utility supplies load.
（
D-2
）
PV
Utility
Input:
Solar only
Output:
Utility Priority
Utility supplies the load.
（
D-3
）
PV
Utility
Input:
Solar Priority
Output:
Inverter Priority
❶
The battery supplies the load alone.
❷
When V
Battery
≤
V
AON
, Simultaneously, it has
not been charged to AOF. Instead, the utility
supplies the load and charges the battery.
（
D-4
）
PV
Utility
Input:
Solar Priority
Output:
Utility Priority
❶
The utility supplies the load alone.
❷
When V
Battery
≤
V
AON
, Simultaneously, it has
not been charged to AOF. Instead, the utility
supplies the load and charges the battery.
