7.2.- OPERATING PRINCIPLE
CirPower Hyb
Hybrid inverter work automatically and there is no need for user interaction. Dis-
play shows inverter status, allowing the user to know which working mode is using the inverter
at any time.
CirPower Hyb
works as an energy manager system, handling the power flows between solar
panels, batteries, loads and grid. The way of handling depends on the selected control strategy
and the status of the battery.
The energy management strategy depends on the type of installation. i.e., the type of sources
of energy available in the installation and whether there are direct loads connected to the AC
output of the device or not.
Table 10
can be used to determine the energy management strategies that can be selected for
the unit, according to the type of installation.
Table 10: Management strategy, according to the type of installation�
Type of installation
Energy management strategies
AC Grid
Solar
Battery
Direct loads
Off-Grid
Self-Consumption
Automatic
Peak
Shaving
Backup
Auto backup
Yes
Yes
Yes
No
-
Yes
Yes
No
No
(1)
-
-
-
-
Yes
No
Yes
Yes
-
-
Yes
No
Yes
No
-
-
-
-
-
No
Yes
Yes
Yes
-
-
-
-
-
Yes
Yes
Yes
Yes
(1)
If a battery is not used, direct charging from an AC output is not required.
7�2�1�- ENERGY MANAGEMENT STRATEGIES
7�2�1�1�- Off-Grid
Off-Grid
strategy disconnects the device from the grid, keeping the grid relays opened all the
time. The device will work the same way, and will keep the relay opened, regardless of the
presence of grid voltage.
To maximize life of battery, the device has a programmable hysteresis, that defines the connec-
tion and disconnection of the loads (AC Out) regarding the state of charge (
SOC
) of the battery.
Starting from a discharged battery (
SOC
<
SOC Min
), the device won’t connect the loads until
the
SOC
is higher than the
SOC Rec
parameter. Once the
SOC
passes that threshold, the de-
vice exits the status of “
empty battery
”, and will keep the battery connected until the
SOC
goes
below
SOC Min
parameter. At that point, the device enters again in “
Empty battery
” status.
55
Instruction Manual
CirPower Hyb 4k-48
