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1.3 Updating the Circuit Model
1.3 Updating the Circuit Model
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Circuit Model File Path: <Public Documents>\National Instruments\<NI VeriStand 20XX>\Examples\OPAL-RT\Power Electronics Add-On\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 IM SM 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 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.

Machine Configuration

Machine Type

Squirrel-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 Pairs

3

Initial Speed

0

Mutual Inductance (H)

0.0354

Zero-Sequence

Don't Include

Solver Timestep (s)

4.81E-7

Input Mapping Configuration

Voltage Phase A

Circuit Model 1.Va_inv

Voltage Phase B

Circuit Model 1.Vb_inv

Voltage Phase C

Circuit Model 1.Vc_inv

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Mechanical Model Configuration

Viscous Damping

0.00190986

Static Friction

0.3665

Inertia

0.0167309

Mechanical Model Mode (VeriStand Channel)

1

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