Siemens SINAMICS PCS - Description; Description of the PGU and the Features Implemented in the Simulation Model

SINAMICS PCS simulation model
Operating Instructions, 10/2020, A5E50173895A
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Description
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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.