Acsm1 Dc Link Capacitance; Energy Capacity In Common Dc - ABB ACSM1 System Manual

22

ACSM1 DC link capacitance

Each ACSM1 drive module has an own capacitor bank. The capacitance
value of each drive size is given in the table below.
ACSM1-04xx-

Energy capacity in common DC

The energy capacity W
following way.
W
DC
where
•
•
•
Size Frame
02A5-4 A
03A0-4 A
04A0-4 A
05A0-4 A
07A0-4 A
09A5-4 B
012A-4 B
016A-4 B
024A-4 C
031A-4 C
040A-4 C
046A-4 C
060A-4 D
073A-4 D
090A-4 D
in the common DC system can be determined with
dc
(
+ +
C C C
=
dc 1 dc 2 dc 3
2
C ...C are the actual capacitance values of the drive modules
dc1 dcn
connected to common DC link.
U is the DC link voltage level, which is allowed for the system
dc,lim
U is the actual DC link voltage level in normal situation
dc
This actual DC link voltage to be used in energy calculations should be
calculated as:
= 2 ×
• U U
dc
Cdc
uF
120
120
240
240
240
370
740
740
670
670
1000
1000
1340
2000
2000
)
(
+ +
... C
2
×
U
dcn
dc , lim
ac
)
2
−
U
dc