ABB DCS800 - Connection for 2-Quadrant Application - Parallel Thyristors

38
Interfacing the Electronics and Thyristors
3ADW000197R0101 DCS800-R Sel e a
Connection for 2-quadrant application - parallel thyristors
With parallel connected thyristors, the additional board SDCS-REB-2 is needed.
Because of the REB-2 board external +24V and +48V are needed. The power
supply SDCS-POW-4 is not able to give enough power for parallel connected thy-
ristors.
The additional board SDCS-REB-1 can be used, but must not be used. Depending
on the final decision the flat cable from X613 (SDCS-REB-2) has to be connected
to either X613 (SDCS-REB-1) or X513 (SDCS-PIN-51 with SDCS-REB-1 re-
moved).
The figure below shows the configuration for a 2-quadrant bridge with 4 parallel
connected thyristors.
V414
SDCS-PIN-41
BCDEF
X113
C
G
C
G
C
G
C
G
C
G
C
G
X213
A
V411 V416 V413 V412 V415
V314
SDCS-PIN-41
BCDEF
X113
C
G
C
G
C
G
C
G
C
G
C
G
X213
A
V311 V316 V313 V312 V315
V214
SDCS-PIN-41
BCDEF
X113
C
G
C
G
C
G
C
G
C
G
C
G
X213
A
V211 V216 V213 V212 V215
V114
SDCS-PIN-48
BCDEF
X113
C
G
C
G
C
G
C
G
C
G
C
G
X213
A
V111 V116 V113 V112 V115
U1
SDCS-PIN-51
V1
W1
C1
D1
X22 X122 X23 X24 X25
X12 S X13 S X413 S
X313 S
X13 X513 X113 X213 X413 X313
S2 S1
X12
20
X51 3 X11 3 X21 3 X41 3 X31 3
SDCS-REB-1
X713
X713 X61 3 X51 3 X11 3 X21 3
Forward bridge pulse transformer boards
+24VEXT
+48VEXT
0VEXT
X2
SDCS-REB-2
X713
X613
X42
X41
X32
X31
X22
X21
X12
X11
X1
0VEXT
RB_2q_4p_a.dsf
2-quadrant application, parallel thyristors.