Modelica.Electrical.Machines.BasicMachines.DCMachines

Models of DC machines

Information


This package contains models of DC machines:

Extends from Modelica.Icons.VariantsPackage (Icon for package containing variants).

Package Content

NameDescription
Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_PermanentMagnet DC_PermanentMagnet Permanent magnet DC machine
Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_ElectricalExcited DC_ElectricalExcited Electrical shunt/separate excited linear DC machine
Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_SeriesExcited DC_SeriesExcited Series excited linear DC machine

Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_PermanentMagnet Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_PermanentMagnet

Permanent magnet DC machine

Information


Model of a DC Machine with permanent magnets.
Armature resistance and inductance are modeled directly after the armature pins, then using a AirGapDC model. Permanent magnet excitation is modelled by a constant equivalent excitation current feeding AirGapDC. The machine models take the following loss effects into account:

No saturation is modelled.
Default values for machine's parameters (a realistic example) are:
stator's moment of inertia 0.29kg.m2
rotor's moment of inertia 0.15kg.m2
nominal armature voltage 100V
nominal armature current 100A
nominal speed 1425rpm
nominal torque 63.66Nm
nominal mechanical output 9.5kW
efficiency 95.0%
armature resistance 0.05Ohm at reference temperature
reference temperature TaRef 20°C
temperature coefficient alpha20a 01/K
armature inductance 0.0015H
armature nominal temperature TaNominal 20°C
armature operational temperature TaOperational 20°C
Armature resistance resp. inductance include resistance resp. inductance of commutating pole winding and compensation winding, if present.

Extends from Machines.Interfaces.PartialBasicDCMachine (Partial model for DC machine).

Parameters

NameDescription
JrRotor's moment of inertia [kg.m2]
useSupportEnable / disable (=fixed stator) support
JsStator's moment of inertia [kg.m2]
useThermalPortEnable / disable (=fixed temperatures) thermal port
Operational temperatures
TaOperationalOperational armature temperature [K]
Initialization
phiMechanicalMechanical angle of rotor against stator [rad]
wMechanicalMechanical angular velocity of rotor against stator [rad/s]
iaArmature current [A]
Nominal parameters
VaNominalNominal armature voltage [V]
IaNominalNominal armature current (>0..Motor, <0..Generator) [A]
wNominalNominal speed [rad/s]
TaNominalNominal armature temperature [K]
Nominal resistances and inductances
RaArmature resistance at TRef [Ohm]
TaRefReference temperature of armature resistance [K]
alpha20aTemperature coefficient of armature resistance [1/K]
LaArmature inductance [H]
Losses
frictionParametersFriction losses
coreParametersArmature core losses
strayLoadParametersStray load losses
brushParametersBrush losses

Connectors

NameDescription
flangeShaft
supportSupport at which the reaction torque is acting
pin_apPositive armature pin
pin_anNegative armature pin

Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_ElectricalExcited Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_ElectricalExcited

Electrical shunt/separate excited linear DC machine

Information


Model of a DC Machine with electrical shunt or separate excitation.
Armature resistance and inductance are modeled directly after the armature pins, then using a AirGapDC model.
The machine models take the following loss effects into account:

No saturation is modelled.
Shunt or separate excitation is defined by the user's external circuit.
Default values for machine's parameters (a realistic example) are:
stator's moment of inertia 0.29kg.m2
rotor's moment of inertia 0.15kg.m2
nominal armature voltage 100V
nominal armature current 100A
nominal torque 63.66Nm
nominal speed 1425rpm
nominal mechanical output 9.5kW
efficiency 95.0% only armature
efficiency 94.06% including excitation
armature resistance 0.05Ohm at reference temperature
reference temperature TaRef 20°C
temperature coefficient alpha20a 01/K
armature inductance 0.0015H
nominal excitation voltage 100V
nominal excitation current 1A
excitation resistance 100Ohm at reference temperature
reference temperature TeRef 20°C
temperature coefficient alpha20e 01/K
excitation inductance 1H
stray part of excitation inductance 0
armature nominal temperature TaNominal 20°C
armature operational temperature TaOperational 20°C
(shunt) excitation operational temperature TeOperational 20°C
Armature resistance resp. inductance include resistance resp. inductance of commutating pole winding and compensation winding, if present.
Armature current does not cover excitation current of a shunt excitation; in this case total current drawn from the grid = armature current + excitation current.

Extends from Machines.Interfaces.PartialBasicDCMachine (Partial model for DC machine).

Parameters

NameDescription
JrRotor's moment of inertia [kg.m2]
useSupportEnable / disable (=fixed stator) support
JsStator's moment of inertia [kg.m2]
useThermalPortEnable / disable (=fixed temperatures) thermal port
Operational temperatures
TaOperationalOperational armature temperature [K]
TeOperationalOperational (shunt) excitation temperature [K]
Initialization
phiMechanicalMechanical angle of rotor against stator [rad]
wMechanicalMechanical angular velocity of rotor against stator [rad/s]
iaArmature current [A]
Nominal parameters
VaNominalNominal armature voltage [V]
IaNominalNominal armature current (>0..Motor, <0..Generator) [A]
wNominalNominal speed [rad/s]
TaNominalNominal armature temperature [K]
Nominal resistances and inductances
RaArmature resistance at TRef [Ohm]
TaRefReference temperature of armature resistance [K]
alpha20aTemperature coefficient of armature resistance [1/K]
LaArmature inductance [H]
Losses
frictionParametersFriction losses
coreParametersArmature core losses
strayLoadParametersStray load losses
brushParametersBrush losses
Excitation
IeNominalNominal excitation current [A]
ReField excitation resistance at TRef [Ohm]
TeRefReference temperature of excitation resistance [K]
alpha20eTemperature coefficient of excitation resistance [1/K]
LeTotal field excitation inductance [H]
sigmaeStray fraction of total excitation inductance

Connectors

NameDescription
flangeShaft
supportSupport at which the reaction torque is acting
pin_apPositive armature pin
pin_anNegative armature pin
pin_epPositive excitation pin
pin_enNegative excitation pin

Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_SeriesExcited Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_SeriesExcited

Series excited linear DC machine

Information


Model of a DC Machine with series excitation.
Armature resistance and inductance are modeled directly after the armature pins, then using a AirGapDC model.
The machine models take the following loss effects into account:

No saturation is modelled.
Series excitation has to be connected by the user's external circuit.
Default values for machine's parameters (a realistic example) are:
stator's moment of inertia 0.29kg.m2
rotor's moment of inertia 0.15kg.m2
nominal armature voltage 100V
nominal armature current 100A
nominal torque 63.66Nm
nominal speed 1410rpm
nominal mechanical output 9.4kW
efficiency 94.0% only armature
armature resistance 0.05Ohm at reference temperature
reference temperature TaRef 20°C
temperature coefficient alpha20a 01/K
armature inductance 0.0015H
excitation resistance 0.01Ohm at reference temperature
reference temperature TeRef 20°C
temperature coefficient alpha20e 01/K
excitation inductance 0.0005H
stray part of excitation inductance 0
armature nominal temperature TaNominal 20°C
series excitation nominal temperature TeNominal 20°C
armature operational temperature TaOperational 20°C
series excitation operational temperature TeOperational 20°C
Armature resistance resp. inductance include resistance resp. inductance of commutating pole winding and compensation winding, if present.
Parameter nominal armature voltage includes voltage drop of series excitation;
but for output the voltage is split into:
va = armature voltage without voltage drop of series excitation
ve = voltage drop of series excitation

Extends from Machines.Interfaces.PartialBasicDCMachine (Partial model for DC machine).

Parameters

NameDescription
JrRotor's moment of inertia [kg.m2]
useSupportEnable / disable (=fixed stator) support
JsStator's moment of inertia [kg.m2]
useThermalPortEnable / disable (=fixed temperatures) thermal port
Operational temperatures
TaOperationalOperational armature temperature [K]
TeOperationalOperational series excitation temperature [K]
Initialization
phiMechanicalMechanical angle of rotor against stator [rad]
wMechanicalMechanical angular velocity of rotor against stator [rad/s]
iaArmature current [A]
Nominal parameters
VaNominalNominal armature voltage [V]
IaNominalNominal armature current (>0..Motor, <0..Generator) [A]
TaNominalNominal armature temperature [K]
TeNominalNominal series excitation temperature [K]
Nominal resistances and inductances
RaArmature resistance at TRef [Ohm]
TaRefReference temperature of armature resistance [K]
alpha20aTemperature coefficient of armature resistance [1/K]
LaArmature inductance [H]
Losses
frictionParametersFriction losses
coreParametersArmature core losses
strayLoadParametersStray load losses
brushParametersBrush losses
Excitation
ReSeries excitation resistance at TRef [Ohm]
TeRefReference temperature of excitation resistance [K]
alpha20eTemperature coefficient of excitation resistance [1/K]
LeTotal field excitation inductance [H]
sigmaeStray fraction of total excitation inductance

Connectors

NameDescription
flangeShaft
supportSupport at which the reaction torque is acting
pin_apPositive armature pin
pin_anNegative armature pin
pin_epPositive series excitation pin
pin_enNegative series excitation pin

Automatically generated Mon Sep 23 17:20:29 2013.