DcElectricalExcitedData

Common parameters for DC machines

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Basic parameters of DC machines are predefined with default values.

Parameters (21)

Jr

Value: 0.15

Type: Inertia (kg·m²)

Description: Rotor's moment of inertia

Js

Value: Jr

Type: Inertia (kg·m²)

Description: Stator's moment of inertia

VaNominal

Value: 100

Type: Voltage (V)

Description: Nominal armature voltage

IaNominal

Value: 100

Type: Current (A)

Description: Nominal armature current (>0..Motor, <0..Generator)

wNominal

Value: 1425 * 2 * pi / 60

Type: AngularVelocity (rad/s)

Description: Nominal speed

TaNominal

Value: 293.15

Type: Temperature (K)

Description: Nominal armature temperature

Ra

Value: 0.05

Type: Resistance (Ω)

Description: Armature resistance at TaRef

TaRef

Value: 293.15

Type: Temperature (K)

Description: Reference temperature of armature resistance

alpha20a

Value: 0

Type: LinearTemperatureCoefficient20 (¹/K)

Description: Temperature coefficient of armature resistance

La

Value: 0.0015

Type: Inductance (H)

Description: Armature inductance

frictionParameters

Value:

Type: FrictionParameters

Description: Friction loss parameter record

ViNominal

Value: VaNominal - Machines.Thermal.convertResistance(Ra, TaRef, alpha20a, TaNominal) * IaNominal - Machines.Losses.DCMachines.brushVoltageDrop(brushParameters, IaNominal)

Type: Voltage (V)

Description: Induced voltage at nominal operating point

coreParameters

Value:

Type: CoreParameters

Description: Armature core loss parameter record

strayLoadParameters

Value:

Type: StrayLoadParameters

Description: Stray load losses

brushParameters

Value:

Type: BrushParameters

Description: Brush loss parameter record

IeNominal

Value: 1

Type: Current (A)

Description: Nominal excitation current

Re

Value: 100

Type: Resistance (Ω)

Description: Field excitation resistance at TeRef

TeRef

Value: 293.15

Type: Temperature (K)

Description: Reference temperature of excitation resistance

alpha20e

Value: 0

Type: LinearTemperatureCoefficient20 (¹/K)

Description: Temperature coefficient of excitation resistance

Le

Value: 1

Type: Inductance (H)

Description: Total field excitation inductance

sigmae

Value: 0

Type: Real

Description: Stray fraction of total excitation inductance

Components (4)

frictionParameters

Type: FrictionParameters

Description: Friction loss parameter record

coreParameters

Type: CoreParameters

Description: Armature core loss parameter record

strayLoadParameters

Type: StrayLoadParameters

Description: Stray load losses

brushParameters

Type: BrushParameters

Description: Brush loss parameter record

Used in Examples (2)

DCEE_Start

Modelica.Electrical.Machines.Examples.DCMachines

Test example: DC with electrical excitation starting with voltage ramp

DC_CompareCharacteristics

Modelica.Electrical.Machines.Examples.DCMachines

Test example: Compare torque-speed characteristic of DC motors