ABB ACSM1 Series, Системное руководство

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