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Product Overview
2.5 Micro Grid
Due to the islanding effect, on-grid inverters are unable to work off-grid. This feature
makes users lose the PV energy of on-grid inverters when off-grid. Micro-grid is a function
that makes hybrid inverters simulate the grid to activate an on-grid inverter during off-grid.
By connecting the on-grid inverter to the EPS port of the hybrid inverter, the hybrid inverter
is able to use PV or battery energy to activate the on-grid inverter when utility is lost.
⋯
N
R
S
T
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⋯
R
PE
N
S T R
N
S T
PE
... ...
Inverter
BAT+BAT-BMS
T-BAT-SYS
PV1
PV2
COM
METER/CT
E-BAR
CT
Distribution
box
Meter
485
Main breaker
Meter
Grid
On-grid inverter
Grid
EPS
Breaker
RCD
Breaker
Breaker
Loads
Loads
N-BAR for
EPS loads
N-BAR for loads
RCD
Breaker
Figure 2-28 Micro grid system diagram
Compatibility
On-grid inverter: Any brand on-grid inverter that supports "frequency adaptation".
On-grid inverter outout power ≤ Max hybrid inverter EPS output power
On-grid inverter outout power ≤ Max battery charging power
Battery
Quantity
2 3 4 5 6
On-grid
inverter power
upper limitation
for HS50E
10.0kW 15.0kW 15.0kW 15.0kW 15.0kW
* The hybrid inverter is unable to control an on-grid inverter, therefore a hybrid inverter
cannot achieve zero export to the grid when loads power + battery power < on-grid
inverter output power.
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