User Manual

Page 76
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
The function can be saved to USB stick as table, as well as read via any of the digital interfaces.
In remote control, the function can’t be loaded or controlled.
FromthescreenwheretheXYfunctiongeneratoriscontrolledmanually(start/stop),youcangobacktotherst
screen of the FC table function and use the formerly locked touch area to save the table to USB drive. In order to
do so, follow the on-screen instructions. The table can be used to analyse the values or to visualise it in Excel or
similar tools.
► How to work with the FC table function
1. With an appropriate load connected, for example a DC-DC converter,
start the function as described in 3.11.4.1.
2. The output voltage will be set depending on the load current, which is
denedbytheconnectedload,andwilldecreasewithincreasingcur-
rent. Without any load, the voltage will rise to the adjusted Uoc value.
3. Stop the function run anytime as described in 3.11.4.1.
3.11.15 Extended PV function according to EN 50530
3.11.15.1 Introduction
This extended PV table function according to standard EN 50530 is used to simulate solar panels in order to test
andratesolarinverters.It’savailablesincermwareversionsKE2.25andHMI2.04ando󰀨ersmanualconguration
and control, as well as remote control. It’s also based on the XY generator, same as the simple PV table function
from 3.11.13,butenablesmorespecictestsandevaluationsduetoadjustableparameters.Whichparameters
are available is explained below. The impact of the parameters on the PV curve and the simulation is described in
the norm paper of EN 50530, which users can refer to in case more detailed description is required. This section
onlydealsaboutcongurationandcontrolofthePVsimulation.
3.11.15.2 Di󰀨erences to the basic PV function
TheextendedPVfunctionhasveadditionalordi󰀨erentcharacteristicscomparedtothesimplePVfunction:
• The simulation distinguishes between a single test run and an automatic test run, called day trend, which is based
uponauser-denedcurvebuiltfromupto100,000points
• There are two invariable and one variable panel technology available to choose from
• There are more parameters available to adjust during runtime
• It allows for data recording during runtime and to save the data either to USB stick or read via digital interface
• Itallowstoselectbetweentwodi󰀨erentparametersetstoadjustduringruntime
3.11.15.3 Technologies and technology parameters
WhenconguringthePVsimulationit’srequiredtoselectthesolarpaneltechnologytosimulate.Thetechnologies
cSI and Thin lm are invariable in their parameters, while technology Manual is variable in all parameters, but
withinspeciclimits.Thisallowsforthevariationofthesimulationandwhencopyingthexedparametervalues
from cSi or Thin lm to Manual, it even enables their variation as well.
One advantage of the invariable technologies is that their technology parameters are automatically set to their
deneddefaultsinthecongurationprocedure.
Overview of the technology parameters used in the PV curve calculation and their defaults:
Abbr. Name Manual cSI Thin lm Unit
FFu Fill factor for voltage >0...1 (0.8) 0.8 0.72 -
FFi Fill factor for current >0...1 (0.9) 0.9 0.8 -
Cu Scaling factor for U
OC
(1
>0...1 (0.08593) 0.08593 0.08419 -
Cr Scaling factor for U
OC
(1
>0...1 (0.000109) 0.000109 0.0001476 m²/W
Cg Scaling factor for U
OC
(1
>0...1 (0.002514) 0.002514 0.001252 W/m²
alpha Temperaturecoe󰀩cientforI
SC
(2
>0...1 (0.0004) 0.0004 0.0002 1/°C
beta Temperaturecoe󰀩cientforU
OC
(1
-1...<0 (-0.004) -0.004 -0.002 1/°C
(1 Uoc = Open circuit voltage of a solar panel
(2 Isc = Short-circuit current (=max. current) of a solar panel