Overmodulation - Siemens SINAMICS PERFECT HARMONY GH180 Function Manual

8.3

Overmodulation

Overmodulation
To achieve increased voltage with the same number of cells, cells can be overmodulated. This is
done automatically in air-cooled 6SR4 and 6SR5 drives and water-cooled 6SR325 drives. For
other drive types, set the OverModulationEnable_O SOP flag true for overmodulation of
cells.
To disable overmodulation, set the OverModulationDisable_O SOP flag true.
Overmodulation may be used in place of standard modulation with the advantage that less cells
are required. A disadvantage of overmodulation is that it can increase output harmonics.
NXGPro+ Control Manual
Operating Manual, A5E50491925A
Advanced Operating Functions
8.3 Overmodulation
235