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The circuit model file has been loaded into the example project already, although the steps below can be used to reload the circuit model.  This is typically only necessary if the circuit has been modified.  For more information, please refer to How to Add a Circuit Model to the System Definition.

  • In the Configuration Tree, under Power Electronics Add-On, click Circuit Model.
  • In the configuration page, click to Browse for the Circuit Model File Path.
  • Select the model (.mdl) file at the Circuit Model File Path shown below. This automatically triggers a model update in the System Definition. 
  • Wait for the update to complete.
  • (optional) Click the Refresh button to see additional model information.
  • Click Save.


Circuit Model File Path: <Public Documents>\National Instruments\<NI VeriStand 20XX>\Examples\OPAL-RT\Power Electronics Add-On\Quad SCIM Constant Local Control\Circuit Model\SCIM_eHS_UB.mdl


Configuring the SCIM Model

In this example, the SCIM model has been pre-configured. For more information about machine configuration, please refer to the SCIM Section. Explore the machine configuration described below.

  • In the Configuration Tree, expand Circuit Model >> Machines and click SCIM 1 to open the configuration page for the machine.
  • Observe the configured machine parameters. The Input Mapping subsection allows the outputs of the circuit model to be easily connected to the inputs of the machine.
  • In the Configuration tree, expand SCIM 1 and click Mechanical Model to view the mechanical model parameters.
  • Confirm that the parameter values match those in the table below.


Motor Configuration
Motor TypeSquirrel-Cage Induction Machine
Stator Resistance (Ohm)0.5968

Stator Leakage Inductance (H)

0.00035
Rotor Resistance (Ohm)0.6258
Rotor Leakage Inductance (H)0.00547
Pole Pairs3
Initial Speed0
Mutual Inductance (H)0.0354
Zero-SequenceDon't Include
Solver Timestep (s)4.81E-7
Mechanical Model Configuration
Viscous Damping0.00190986
Static Friction0.3665
Inertia0.0167309
Mechanical Model Mode (VeriStand Channel)1


  

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