Siemens sinamics dcp - Page 404

Operation
7.21 Technological functions
SINAMICS DCP
402 Operating Instructions, 09/2019, A5E34382853K
2. Adapting the system configuration
The following parameters must be set as a function of the specific system configuration. The
specified values are an example when the PV array is connected at side 2.
•
p54000
Interconnection with the se
tpoint for manual operation
•
p54001 = 1
(automatic operation selected)
•
p54002 = 100%
(current limit)
The current limit should be set so that the PV array voltage is not
too low when carrying out a search and when operational.
•
p54003 = r55112
(minimum current PV flying restart)
The MPP al
gorithm starts with that current that was required
when performing
a PV flying restart in order to bring the PV array
into the permissible voltage range of the DCP.
•
p54005 = 2.00 s
(search interval)
•
p54006 = 1.00 %
(current step)
•
p54007 = 90.00 %
(curre
nt reduction factor)
•
p54009 = -1
(energy flow from side 2 to side 1)
1)
•
p54010 = r55540[2]
(power on side 2)
1)
With this setting, the PV array power is used to determine the
MPP. Alternatively, r55540[1] (power at side 1) can be specified
here, and th
en the MPP of the complete PV array/DCP system
determined.
•
p54011 = 0.05 s
(smoothing time constant power)
•
p54013 = r55125.11
(lower voltage limit side 2 reached)
1)
Depending on the properties of the PV array, it can make sense
to not set this signal
when the voltage limit is reached, but to
already intervene at higher voltage levels.
•
p54030.0 = 1
(PV array characteristic recording, time
-controlled)
•
p54035 = 300 s
(characteristic recording interval)
•
p54036 = 10 s
(characteristic recording duration)
•
p54037 = 10.00 %
(current search range)
•
p55060 = 12
(the current setpoint corresponds to the current on side 2)
1)
•
p55110 = 2
(PV array flying restart on side 2)
1)
1)
If the PV array is connected with side 1 of the DCP, these parameters must be adapted correspond-
ing to the suggestions.