98 The ESI-Manager user interface
Manual Energy Storage Inverter ESI-S
shows an overview of the possible tasks and shows how the inverter set up should be
done to implement this task. The parameters (italic print) referred to in
can be
accessed in the ‘Main PFC/Bal.’ and ‘Aux. PFC/Bal.’ windows of the ESI-Manager.
Table 42: Reactive power tasks that the inverter can perform
Reactive power task requirement
Description and inverter set-up to be made
No requirements
PFC type: Disabled
Balance load: Disabled
The inverter will not do any reactive power task,
regardless of the values set for cos
ϕ
or static
reactive power
Power factor compensation with
inductive power factor set point, no
load balancing required
(a)
PFC type: Dyn. Ind.
Target cos
ϕ
: Desired power factor between 0.6 and
1.0
The inverter will do power factor compensation up to
the cos
ϕ
set point, regardless of the value set for
static reactive power
(b)
Power factor compensation with
capacitive power factor set point, no
load balancing required
(a)
PFC type: Dyn. Cap.
Target cos
ϕ
: Desired power factor between 0.6 and
1.0
The inverter will do power factor compensation up to
the cos
ϕ
set point, regardless of the value set for
static reactive power
(c)
Fixed capacitive power step with a
rating of x kvar, no load balancing
required
(a)
PFC type: Static cap.
Q static: x kvar
The inverter will generate x kvar reactive capacitive
power, regardless of the value set for the target cos
ϕ
Fixed inductive power step with a
rating of x kvar, no load balancing
required
(a)
PFC type: Static ind.
Q static: x kvar
The inverter will absorb x kvar reactive inductive
power, regardless of the value set for the target cos
ϕ
Remarks:
(a)
When load balancing is required, set the ‘
Balance load’ flag to the desired mode. The following
modes are available depending on the way the inverter is connected
(3-W or 4-W)
-
‘Disabled’: No load balancing is done.
-
‘L-L’: Loads connected between phases only are balanced. Loads connected between
phases and neutral are not balanced.
-
‘L-N’: Loads connected between phase and neutral are balanced. Loads connected
between phases are not balanced. This mode is only available when the inverter is
connected in 4-W mode.
-
‘L-L & L-N’: Both loads connected between phase and neutral as well as loads connected
between phases are balanced. This mode is only available when the inverter is connected
in 4-W mode.
Note: The modes ‘L-N’ and ‘L-L & L-N’ can be used to minimize the amount of fundamental
frequency current flowing in the neutral.
