The AC Induction Machine model implements a three-phase induction machine (asynchronous machine) with a resolver, encoder, and hall effect sensor.
ACIM Configuration Page
In the System Explorer window configuration tree, expand the Power Electronics Add-On custom device and select Circuit Model >> ACIM to display this page. Use this page to configure the ACIM machine model. Additional information about the model can be found in the National Instruments Help page for the ACIM Constant Parameter Model VI.
This page includes the following components:
|AC Induction Machine Model Settings|
|Name||Specifies the name of the machine model.|
|Description||Specifies a description for the machine model.|
|Magnetizing Inductance||Lm||Henries||0.0462||Specifies the magnetizing inductance of the motor.|
|Stator Leakage Inductance||Lls||Henries||0.00194||Stator winding leakage inductance. This value must be greater than 0.|
|Rotor Leakage Inductance|
|Henries||0.00245||Rotor winding leakage inductance. This value must be greater than 0.|
|Stator Resistance||Rs||Ohms||0.896||Stator winding resistance. This value must be greater than 0.|
|Rotor Resistance||Rr||Ohms||1.82||Rotor winding resistance. This value must be greater than 0.|
Describes the timestep of the machine model.
Number of machine pole pairs.
|Mechanical Model Parameters|
Moment of inertia of the electric motor. This value must be equal to or greater than 0.
|Friction Coefficient||0||Friction coefficient of the electric motor. This value must be equal to or greater than 0.|
|Temperature Correction Parameters|
Base temperature for the stator resistance and the rotor resistance. This value must be greater than 0.
|Stator Temperature Coefficient||ks||1/Kelvin||0.00393||Coefficient for temperature correction of the stator resistance. This value must be greater than 0.|
|Rotor Temperature Coefficient||kr||1/Kelvin||0.00393||Coefficient for temperature correction of the rotor resistance. This value must be greater than 0.|
|Input Mapping Configuration|
|Use the Input Mapping Configuration to route signals to the Voltage Phase A, Voltage Phase B, and Voltage Phase C inputs of the machine model. Available routing options may vary depending on the selected Hardware Configuration.|
Specifies the group that will be routed to the input voltages of the machine. The available routing options are defined by the selected Hardware Configuration, however it is typical to see the following options by default:
|Specifies the index of the measurement in the group that has been selected as the input voltage of the machine.|
ACIM Section Channels
This section includes the following custom device channels:
Set this channel to one of the following values:
|Load Torque||Input||Newton Meters||0Nm||Torque applied to the shaft of the machine.|
|Rotor Temperature||Input||Kelvin||298.15K||Temperature of the motor rotor. If this value is greater than 0, Temperature Correction is performed for the Stator Resistance and the Rotor Resistance.|
|Stator Temperature||Input||Kelvin||298.15K||Temperature of the motor stator. If this value is greater than 0, Temperature Correction is performed for the Stator Resistance and the Rotor Resistance.|
|Va||Output||Volts||0V||Phase A voltage of the electric motor.|
|Vb||Output||Volts||0V||Phase B voltage of the electric motor.|
|Vc||Output||Volts||0V||Phase C voltage of the electric motor.|
|Ia||Output||Amperes||0A||Phase A current of the electric motor.|
|Ib||Output||Amperes||0A||Phase B current of the electric motor.|
|Ic||Output||Amperes||0A||Phase C current of the electric motor.|
|Electromagnetic Torque||Output||Newton Meters||0Nm||Electromagnetic torque of the electric motor.|
|Speed||Output||RPM||0RPM||Rotor speed of the electric motor.|
|Position||Output||Radians||0rad||Rotor position of the electric motor.|
ACIM Model Description
For a full description of the ACIM model and its parameters, please see the National Instruments Help pages at the links below:
- Constant Parameter Model for ACIM Simulation
- ACIM Constant Parameter Model VI
- Temperature Correction
- Motor Speed and Rotor Position VI (Mechanical Model)