The PMSM VDQ machine model and its associated Hardware Configurations have been archived. If starting a new project, consider using the Dual PMSM BLDC Machine Model instead.
The PMSM VDQ Machine model implements a three-phase permanent magnet synchronous machine with a resolver, encoder, and hall effect sensor.
PMSM VDQ Configuration Page
In the System Explorer window configuration tree, expand the Power Electronics Add-On custom device and select Circuit Model >> PMSM VDQ to display this page. Use this page to configure the PMSM VDQ machine model.
This page includes the following components:
PMSM Variable Parameter Model Settings | ||||
Name | Specifies the name of the machine model. | |||
Description | Specifies a description for the machine model. | |||
Motor Configuration | ||||
|---|---|---|---|---|
Motor Type | Choose from one of the following types. The motor configuration parameters automatically populate depending on the selected Motor Type. | |||
Mechanical Model Parameters | ||||
Symbol | Units | Default | Description | |
Inertia | kgm2 | 1 | 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 | ||||
Symbol | Units | Default | Description | |
Coil Base Temperature | Tc-base | Kelvin | 200 | Base temperature of the motor coil. This value must be equal to or greater than 0. |
Coil Temperature Coefficient | kc | 1/Kelvin | 0 | Coefficient for temperature correction of the motor resistance. The material of the coil determines this value. |
Magnet Base Temperature | Tm-base | Kelvin | 200 | Base temperature of the motor magnet. This value must be equal to or greater than 0. |
Magnet Temperature Coefficient | km | 1/Kelvin | 0 | Coefficient for temperature correction of the magnet flux. The material of the magnet determines this value. |
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. | ||||
Group | 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:
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Element | Specifies the index of the measurement in the group that has been selected as the input voltage of the machine. | |||
PMSM VDQ Section Channels
This section includes the following custom device channels:
Channel Name | Type | Units | Default Value | Description |
|---|---|---|---|---|
Enable | Input | 0 | Set this channel to one of the following values:
| |
Load Torque | Input | Newton Meters | 0Nm | Torque externally applied to the shaft of the machine. This parameter is used only if Force Speed is disabled (0). |
Force Speed | Input | 0 | Set this channel to one of the following values:
| |
Force Speed Setpoint | Input | Radians per second | 0rad/s | Forces the speed of the machine to the defined value. This parameter is used only if Force Speed is enabled (1). |
Coil Temperature | Input | Kelvin | 0K | Temperature of the motor coil. If this value is greater than 0, Temperature Correction is performed for the resistance and magnet flux. |
Magnet Temperature | Input | Kelvin | 0K | Temperature of the motor magnet. If this value is greater than 0, Temperature Correction is performed for the resistance and magnet flux. |
BackEMF Gain | Input | 0 | ||
Current Phase A | Output | Amperes | 0A | Phase A current of the electric motor. |
Current Phase B | Output | Amperes | 0A | Phase B current of the electric motor. |
Current Phase C | Output | Amperes | 0A | Phase C current of the electric motor. |
Direct Stator Current | Output | Amperes | 0A | Direct current of the electric motor. The value of dq current corresponds to the value of ABC current in the flux, torque (d, q) rotating reference frame. |
Quadratic Stator Current | Output | Amperes | 0A | Quadratic current of the electric motor. The value of dq current corresponds to the value of ABC current in the flux, torque (d, q) rotating reference frame. |
Electromagnetic Torque | Output | Newton Meters | 0Nm | Electromagnetic torque that the electric motor generates while it is running. |
Speed | Output | Radians per second | 0rad/s | Rotor speed of the electric motor. |
Position | Output | Radians | 0rad | Rotor position of the electric motor. |
BackEMFa | Output | Volts | 0V | |
BackEMFb | Output | Volts | 0V | |
BackEMFc | Output | Volts | 0V |
Motor Type: Constant Parameter
For a full description of the PMSM Constant Parameter model and its parameters, please see the National Instruments Help pages at the links below:
Motor Configuration | ||||
|---|---|---|---|---|
Symbol | Units | Default | Description | |
Direct Inductance | Ld | Henries | 0.024H | Inductance along the d or direct axis. |
Quadrature Inductance | Lq | Henries | 0.028H | Inductance along the q or quadrature axis. |
Loop Time | Ts | Seconds | 1E-6s | Describes the timestep of the machine model. |
Pole Pairs | PP | 3 | Number of machine pole pairs. | |
Flux Linkage | λ | Webers | 0.1Wb | Flux linkage between the rotor and stator. This value must be greater than 0. |
Resistance | R | Ohms | 1.2 | Resistance in the electric motor. This value must be greater than 0. |
Motor Type: Variable Parameter
For a full description of the PMSM Variable Parameter model and its parameters, please see the National Instruments Help pages at the links below:
Motor Configuration | ||||
|---|---|---|---|---|
Symbol | Units | Default | Description | |
Model File | Path to the model file on disk. The model file contains tables describing the d inductance, q inductance, and flux as a function of Direct Current and Quadratic Current. Additional formatting information and templates can be found here: | |||
Table Size | 100 | Specifies the size of the Ld, Lq, and Flux tables in the Model File. | ||
Loop Time | Ts | Seconds | 1E-6s | Timestep of the machine model. |
Delimiter | , | Specifies the type of text delimiter in the Model File. | ||
Resistance | R | Ohms | 1.2 | Resistance in the electric motor. This value must be greater than 0. |