Siemens Simovert Masterdrives Compendium page 933

06.2005
Siemens AG 6SE7087-6QX70 (Version AE)
SIMOVERT MASTERDRIVES
P
Mot
7.09 kW
0.734 kW
1 s
0.25 s
-4.53 kW
Fig. 11-17 Characteristic of the motor output for forwards travel
♦ The maximum DC link current during operation of the motor during
acceleration is
=
I
Link Inv max
η ⋅
Mot
7090
=
⋅ ⋅ ⋅
0 92 0 98 135 400 . . .
♦ The mean motor power output during operation of the motor is
calculated from the positive characteristic of the motor power output
as follows:
P
Mot A
∑
=
P
Mot mean
1
⋅ ⋅ +
7 09 0 25 0 734 1 . . .
2
=
3 5 .
♦ The mean value of the DC link current is therefore:
P
=
I
Link mean
η ⋅ η
Mot
463
=
⋅ ⋅ ⋅
0 92 0 98 135 400 . . .
Compendium Motion Control
0.25 s
Negative area corresponds to regenerative
operation
3.5 s
P
Mot max
η ⋅ ⋅
135 . U
Inv line
=
14 56 . A
+
P
Mot E
⋅ ∆
t
i
2
'
T
⋅
=
0 463 . kW
Mot mean
⋅ ⋅
135 . U
Inv Line
=
0 95 . A
Engineering Information
t
11-33