Siemens SINAMICS S Manuel page 1219

Controller, modulation depth reserve
<1>
Modulation depth
r0074
[8950.4]
P3481
INF Res_ctrl dyn
INF Vdc Z_set
Controller DC link voltage
p3511
INF Vdc setpoint
<2>
300.00...1600.00 V
p3510 (600.00)
Vdc_actual value
r0070
[8950.1]
<1> This controller increases (boosts) the DC link voltage if the modulation depth limit has been reached (p3480).
<2>: When the pulses are enabled, the DC link voltage is ramped (p3566) from the actual value to the setpoint p3510.
1 2
DO: A_INF
Active infeed - controller modulation depth reserve/controller DC link voltage (p3400.0 = 0)
INF
mod_depth limit
p3480
–
+
INF Res_ctrl output
r3485
p0280
Vdc_max stat
+ +
+ +
3 4
Power pre-control
INF pre-control P scal
p3521[0]
INF pre-control P
p3520[0]
(0)
+
P
+
INF pre-control P
p3520[3]
(0)
p3521[3]
1,5
INF pre-control P scal
U_line supply calculated
[8950.4]
Kp Tn
p3560 p3562
p3400.3
[8960.7]
Kp Tn
1
0
+ 0
–
R3554
INF Vdc_ctrl I_comp
Vdc setpoint
r0088
[8964.6]
INF I_suppl active
p3515
5 6
fp_8940_01_eng.vsd
03.02.06 V02.04.00
p0115[0] (250.00 µs)
I = P/U
INF I_distr_factor
p3516
INF I_limit mot
p3530
Iq_set
+
r0077
+
+ [8946.1]
P3531
INF I_limit regen
INF I_active ctrl set
r3517
+
INF I_suppl_active stat
+ p3514
7
Function diagram
SINAMICS S
8
- 8940 -