SIEMENS
Description of options
SINAMICS GM150, SINAMICS SM150
Description of options
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Siemens D 12 · 2012
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Options
The circuit for the 24-pulse infeed is implemented in different
ways for SINAMICS GM150 in the IGBT version and in the IGCT
version. The two following diagrams should clearly show the
principle difference between the parallel connection (for IGBT)
and the series connection (for IGCT). The Basic Line Modules
(each with two diode rectifiers) are supplied from two 3-winding
transformers with ±7.5° shift on the primary side. 12-pulse oper-
ation applies as a result of the 30° phase shift between the two
rectifiers of a DC link half. For the same load of the halves, 24-
pulse operation is achieved as the infeeds of the two DC link
halves are phase shifted through 15° with respect to one an-
other. In the case of IGBTs, the deviation of the secondary volt-
age of a transformer under load conditions may be a maximum
of 1 %.
SINAMICS GM150 in the IGBT version, 24-pulse infeed by connecting
two Basic Line Modules in parallel (absolute values of the individual
phase shift angles as example only)
SINAMICS GM150 in the IGCT version, 24-pulse infeed by connecting
two Basic Line Modules in series (absolute values of the individual phase
shift angles as example only)
-37.5°
-7.5°
-7.5°
-22.5°
+7.5°
+7.5°
G_D012_EN_00046
-37.5°
-7.5°
-7.5°
-22.5°
+7.5°
+7.5°
G_D012_EN_00047
© Siemens AG 2012