Maximum Modulation Depth / Modulat Depth Max; Filter Time Constant Smoothed Modulation Index / T_Filt Mod_Idxsmth; Filter Time Constant Vdc Correction / T_Filt Vdc_Corr - Siemens SINAMICS G150 Manual

2 Parameters
2.2 List of parameters
5:
6:
7:
8:
9:
19:
Dependency: If a sine-wave filter is parameterized as output filter (p0230 = 3, 4), or if the power unit firmware is not able to
calculate edge modulation (r0192.0 = 0), then only space vector modulation without overcontrol can be set as
modulation type (p1802 = 3).
For permanent-magnet synchronous motors and chassis power units, the following applies:
Edge modulation or optimized pulse pattern can only be used, if p1810 bit 2 = 1 is set.
Refer to: r0192, p0230, p7003
Notice: If the pulse patterns are enabled with overmodulation option (p1802 < 3) or edge modulation (p1802 > 6), then the
current actual value correction is automatically activated (p1840.0 = 0).
Note: When modulation modes are enabled that could lead to overmodulation (p1802 = 0, 1, 2, 5, 6), the modulation depth
must be limited using p1803 (default p1803 < 100 %). The higher the overmodulation, the greater the current ripple
and torque ripple.
When changing p1802[x], the values for all of the other existing indices are also changed.
p1802 = 7, 8 should be used if the drive is operated below 100 Hz or 60 Hz, and it is necessary to avoid changing
over to edge modulation. Above these output frequencies, the modulation depth remains limited so that there the full
output voltage of the edge modulation is not reached.
The setting p1802 = 19 is only released for chassis power units and SIMOTICS FD motors.
p1803[0...n]

Maximum modulation depth / Modulat depth max

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Modulation
Not for motor type: -
Min
20.0 [%]
Description: Defines the maximum modulation depth.
Note: p1803 = 100% is the overcontrol limit for space vector modulation (for an ideal drive converter without any switching
delay).
If an optimized pulse pattern is enabled (edge modulation), then the modulation depth is limited to below the output
frequency of 28 Hz as there is no optimized pulse pattern in this range.
p1804[0...n]

Filter time constant smoothed modulation index / T_filt mod_idxSmth

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Modulation
Not for motor type: -
Min
0.0 [ms]
Description: Filter time constant for the smoothed modulation index to change over the modulator mode.
p1806[0...n]

Filter time constant Vdc correction / T_filt Vdc_corr

VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Closed-loop control
Not for motor type: -
Min
0.0 [ms]
Description: Sets the filter time constant of the DC link voltage used to calculate the modulation depth.
430
SVM with pulse frequency reduction
SVM/FLB with pulse frequency reduction
No edge modulation up to 100 Hz
No edge modulation up to 60 Hz
Edge modulation
Optimized pulse pattern
Calculated:
CALC_MOD_LIM_REF
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
150.0 [%]
Calculated: -
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
10000.0 [ms]
Calculated: CALC_MOD_REG
Dyn. index: DDS, p0180
Units group: -
Scaling: -
Max
10000.0 [ms]
List Manual (LH2), 04/2014, A5E03263479A
Access level: 3
Func. diagram: 6723
Unit selection: -
Expert list: 1
Factory setting
100.0 [%]
Access level: 4
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
10.0 [ms]
Access level: 4
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
0.0 [ms]
SINAMICS G130/G150