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Description
2.1
Description of the PGU and the features implemented in the
simulation model
Power generating unit (PGU), type SINAMICS PCS comprises the following components:
• Active Interface Module of the SINAMICS S120 series of Siemens AG
• Active Line Module of the SINAMICS S120 series of Siemens AG
• An energy source connected to the device DC connection.
The hardware-related closed-loop control of the PGU is realized in the CU320-2 Control
Module.
The SINAMICS firmware was extended to include a DCC chart to implement the requirements
of VDE-AR-N 4110.
Additional notes are provided in the associated documentation of function expansion "Drive
Control Chart" (DCC), see SINAMICS documentation
(https://support.industry.siemens.com/cs/ww/en/ps/6SL3054-0FC../man).
Description of the features implemented in the SINAMICS PCS simulation model
The simulation model models the following:
• Grid reactor and inverter
• Closed-loop control of the active and reactive current in undisturbed operation and for
dynamic grid faults
• Closed-loop control of the DC voltage
• Closed-loop reactive power control
Here, only the direct setpoint input is taken into consideration.
A simulation in the cos phi closed-loop control/Q(U)/Q(P) operating mode is not part of the
model.
• Controlled reduction of the active power for overfrequency conditions and when specified
by the grid operator
• Grid protection and/or grid monitoring
The model can be adapted to various PGU application conditions. The grid connection voltage
and the rated current of the PGU can be parameterized.
SINAMICS PCS simulation model
Operating Instructions, 10/2020, A5E50173895A
2
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