63
User Manual
MHS-3~8K
series
※
7.6 Reactive Power
The inverter provides a reactive power regulation function.
This mode can be enabled via configuration software. It is enabled by default in some
regions, such as AU, DE market. For information on how to change default setpoints please
contact Solinteg Technical Support at [email protected].
Descriptions of reactive power regulation mode:
Mode
Descriptions
Off
The PF is fixed at +1.000.
PF
The reactive power can be regulated by the parameter PF (Power Factor).
Qt
The reactive power can be regulated by the parameter Q-Var limits (in %).
Q(P)
The PF changes with the output power of the inverter.
Q(U)
The reactive power changes with the grid voltage.
7.6.1 “Off” Mode
s
The reactive power regulation function is disabled. The PF is limited to +1.000.
7.6.2 “PF” Mode
The power factor is fixed and reactive power setpoint is calculated according to the current
power. The PF ranges from 0.8 leading to 0.8 lagging.
Leading: the inverter is sourcing reactive power to the grid.
Lagging: the inverter is injecting reactive power into the grid.
Figure 7-1 Capabilities
P
P
D
-0,6
P
D
+0,6
P
D
Absorption of reactive energy
(under-e
xcited
)
Provision of reactive energy
(o
ver-excite
d)
Requirement
Design freedom area
in some countries
Q
1,0 S
max
0,1 S
max
