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Knowledge base » Software reference » GCP – Grid connection panel

GCP – Grid connection panel

By  Shu Wang  and  Luca Stroppiana Updated on SD303

Table of Contents

The GCP block is a simulation model included in the Imperix Power library. It models the imperix grid connection panel in Simulink and PLECS simulation.

For more information regarding the Imperix Power library, please read Getting started with Imperix Power library.

Modeling of GCP

The schematic of the GCP model is depicted on the right. It has one modeling level:

  • (A) Simple
schematic of GCP model
Schematic of GCP model

For more detailed model parameters and measurement results, please contact [email protected].

The GCP model has two variants: AC 230V and AC 110V, suitable for different grid standards. In the simulation model, the only difference is the value of the precharge resistors.

  • AC 230V: \(R=47\Omega\)
  • AC 110V: \(R=22\Omega\)

The model has two 3-phase relays controlled by two signal inputs r1 and r2. In most systems prewired by imperix, the relays are controlled by B-Box RCP using the GPO ports below:

Relay nameInput signal nameGPO port
Precharge relaysr10
Bypass relaysr21

The relays have an on-resistance of 5 mΩ modeling the non-idealities of the relays.

Simulink GCP block

Port specification

  • The inputs r1 and r2 control the precharge relay and bypass relay separately. The relays are closed when the input is different from 0.
  • The connection ports a,b,c are the electrical ports connected to the three-phase converter.
  • The connection ports A,B,C are the electrical ports connected to the three-phase grid.
GCP Simulink block

Parameters

  • Modeling level selects the modeling level (here, only “(A) Simple” is available).
  • AC voltage rating selects the AC voltage rating (determines the value of the precharge resistors).
GCP Simulink mask

PLECS GCP block

Port specification

  • The inputs r1 and r2 control the precharge relay and bypass relay separately. The relays are closed when the input is different from 0.
  • The connection ports A',B',C' are the electrical ports connected to the three-phase converter.
  • The connection ports A,B,C are the electrical ports connected to the three-phase grid.
GCP PLECS block

Parameters

  • Modeling level selects the modeling level (here, only “(A) Simple” is available).
  • AC voltage rating selects the AC voltage rating (determines the value of the precharge resistors).
GCP PLECS mask

Probe signals

This block has no signals to be monitored.

Shu is an experienced development engineer at imperix. He authored or co-authored numerouus articles on the knowledge base, notably on FPGA-based control implementation and high-level synthesis tools and techniques.

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