108 The ESI-Manager user interface
Manual Energy Storage Inverter ESI-S
In Mode 2, the second priority after active power set point and filtering to the curve is
reactive power compensation and load balancing. Maximum filtering comes in third
place and will be done if both the curve specification and the reactive power
requirements including balancing are fulfilled.
In Mode 3, the inverter will first ensure that active power set point and the harmonic
curve specification is fulfilled. If then there are still resources available, the inverter will
do reactive power compensation and load balancing if requested by the user.
illustrates the principle of filtering to curve for one particular harmonic order.
The flexibility of the ESI control is such that a specific curve level may be defined for each
selected harmonic.
Filtered current
Remaining
supply
current
Before filtering
After filtering
Permitted
residual level
into the supply
=
curve setting
Supply
current for
harmonic
order n
Figure 74: Invertering to curve for harmonic order n
The default inverter mode is Mode 3.
7.9.2.1.2 Selecting the harmonics with setting of curve levels
For setting up the inverter’s main harmonics selection go to
[/Welcome/Settings/Customer set./Main settings/Main harmonics]
For setting up the inverter’s auxiliary harmonics selection go to
[/Welcome/Settings/Customer set./Auxiliary settings/Aux. harmonics]
The harmonics that can be selected are presented in a table such as presented
When the ESI is operating in 4-W mode, 15 harmonics can be selected.
When the ESI is operating in 3-W mode, 20 harmonics can be selected.
