Lust CDA3000 - DC Network Operation

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Engineering Guide CDA3000
3 Selection of inverter module
3.3.7 DC network
operation
DC network operation of the CDA3000 inverter modules enables an
energy exchange between the inverter modules.
The inverter modules which are run in DC network mode regeneratively
(braking) feed energy into the DC network which is consumed by the
motorized inverter modules. The regenerative energy does not need to be
delivered from the mains.
DC network operation of several inverter modules minimizes the energy
consumption from the mains and in most cases eliminates the need for
use of braking chopper units.
Figure 3.37 Circuitry example, DC network operation
M
3
~
U1
+
-
UV
W
PE
L1
L2
L3
PE
L1
L2
L3
PE
F1
L1
M1
M
3
~
U2
+
-
UV
W
PE
L1
L2
L3
PE
F4
L2
M2
M
3
~
+
-
UV
W
PE
L1
L2
L3
PE
F
n
L
n
Mn
U
n
K1
F2/3
F5/6
Fn+1/n+2