87
table 8-1 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.
“Off” Mode
The reactive power regulation function is disabled. The PF is limited to +1.000.
“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.
“Qt” Mode
In the Qt mode, system rated reactive power is fixed, and the system injects reactive power
according to the delivered reactive power ratio. The Reactive Power Ratio is set through
the App.
The setting range of the reactive power ratio is 0~100% or 0~-100%, corresponding to the
ranges of inductive and capacitive reactive power regulation respectively.
“Q(P)” Mode
The PF of the inverter output varies in response to the output power of the inverter.
table 8-2 “Q(P)” Mode Parameter Descriptions:
Parameter
Explanation
Default
Range
DE AU
Q(P) Curve
Select corresponding curve ac-
cording to local regulations
A
A, B, C
*
QP_P1
Output power at P1 on the Q(P)
mode curve (in percentage)
20% 25% 0% ~ 100%
QP_P2
Output power at P2 on the Q(P)
mode curve (in percentage)
50% 20% ~ 100%
QP_P3
Output power at P3 on the Q(P)
mode curve (in percentage)
100% 20% ~ 100%
QP_K1
Power factor at P1 on the Q(P)
mode curve
1
Curve A/C: 0.8 ~
1
Curve B: - 0.6 ~
0.6
QP_K2
Power factor at P2 on the Q(P)
mode curve
1
QP_K3
Power factor at P3 on the Q(P)
mode curve
0.95 0.90
User Manual 8 iSolarCloud App
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