Manual - TC.P Quadro
Hardware options
2016-08-05
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V04.52
4
4.2.10.
TC.LIN (linear post-processing unit) option
Function
The TC.LIN linear post-processing unit contains a powerful DSP, which
undertakes the control. Reference value for the control is the voltage
present at the load. It is fed via the sense cable both to the TC.LIN and
also to the TopCon power supply and is used as the basis for control
via PV curves.
During this process the otherwise autonomous TC.LIN is informed only
of changes to the characteristic via the CAN bus by the TopCon power
supply.
The difference between the output voltage output from the TopCon
power supply and the load voltage is used as a controller amplitude re-
serve for the fast TC.LIN linear controller. Typical values are between
40 V and 50 V.
The TC.LIN operates in principle as a current controller. At very low cur-
rents, the TC.LIN switches to the voltage controller mode so that accu-
racy is maintained also in this area.
TopCo
n
Power Supply
DSP
TopCon
DSP
D
C
O
u
tp
u
t
D
C
I
n
p
u
t
TopCon TC.LIN
Linear Post-Processing Unit
CAN-Bus
Fig. 58
The basic problem
Some inverter models require even faster dynamic performance for the
optimum function of their MPP tracker (Maximum Power Point); this per-
formance is achieved by connecting in series a linear-controlled series
controller.