WEG MVW01 - Three Level (3 L) Line with up to Four Set Parallelism (3 L4)

8
INVERTER PARALLELISM
8.2 THREE LEVEL (3L) LINE WITH UP TO FOUR SET PARALLELISM (3L4)
For the present power section structure, up to 4 groups of power arms connected in parallel, by means of reactors, can be used. Table 8.1 on
page 8-2 presents the nomenclature used to identify the several power arms.
Table 8.1: Correspondence of the 4160 V line parameters with the power arms
Group
Phase Nomenclature
Temperature
read
A
U U P0055
V V
P0056
W W
P0057
Ap
U
UAp
P0047
V
VAp
P0048
W
WAp
P0049
B
U UB P0082
V VB
P0083
W WB
P0084
Bp
U
UBp
P0085
V
VBp
P0086
W
WBp
P0087
The structure of the power groups operating in parallel is presented next.
Multipulse
rectifier
Temp. R1
(P0059)
Vcc+
(P0053)
Vcc-
(P0052)
Group B
U V W
Group ApGroup A Group Bp
Temp. R2
(P0051)
Figure 8.2: Power structure of the NPC 4160 V 3 levels up to 3L4
Table 8.2: Admissible power according to the number of groups used in parallel in the 3300 V and 4160 V line
Group
Frame size
Maximum
power [HP]
Structure
A
A and B
4040
3L
A + Ap
C
7670
3L2
A + Ap + B
D
11510
3L3
A + Ap + B + Bp
E
15350
3L4
Configurations showed in the Table 8.1 on page 8-2 and power references of the Table 8.2 on page 8-2 are valid for the 3300 V and 4160 V
lines. More information on the possible MVW-01 voltage and power configurations can be found in the product catalog.
MVW01 | 8-2