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9
Operation & Maintenance
ACTIVATING THE SYSTEM
The individual units come plug-and-play ready. After connecting the inverter to a valid grid connection, the output of the currently-sleeping SolarLEAF
should be connected to an available pair of ports on the inverter. The SolarLEAF will automatically WAKE, when it detects a voltage greater than 12V DC
on its PV port—so connecting the associated PV panel with the PV port will turn the unit on.
MODES
1.
Charging:
The key to long-term health and reliability of a module-level battery system is the ability to maintain routine charge and discharge across
all the units within the system. The SolarLEAF has a built-in MPPT charger that converts solar energy and charges the battery. The MPPT helps maxi-
mize solar power, especially in cases of module shading or soiling.
2.
Time-of-Use Shifting:
The SolarLEAF has the ability to store power until a user-defined time using a time-of-discharge profile. The profile instructs the
SolarLEAF when to produce output port power and the minimum amount of power to produce as long as it is available. After the profile is created, it
is then sent to and stored in the SolarLEAF.
3.
PV Smoothing:
If the battery is full and the SolarLEAF is in the PV pass-through mode, the power generated from the PV port is pushed to the Out
port. The Out port is set to track the power of the PV port, but at a slower rate than the rate at which the PV power level changes. This creates a
smoothing effect, or a low-pass filtering effect. The Out port can also be set to a constant output, and as long as there is power available from the
battery, the Out port will maintain this constant output power.
4.
Grid-Outage / Rapid Shutdown:
During a grid outage, the micro-inverters that route the SolarLEAF’s energy into AC are compliant with RSD require-
ments as defined in the micro-inverter’s datasheet.
DEACTIVATING THE SYSTEM
For more than a week of storage, ensure that the SolarLEAF units are at 30% SOC.
