Models of DC machines
Extends from Modelica.Icons.VariantsPackage (Icon for package containing variants).
Name | Description |
---|---|
DC_PermanentMagnet | Permanent magnet DC machine |
DC_ElectricalExcited | Electrical shunt/separate excited linear DC machine |
DC_SeriesExcited | Series excited linear DC machine |
Permanent magnet DC machine
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 | 0.29 | kg.m2 |
rotor's moment of inertia | 0.15 | kg.m2 |
nominal armature voltage | 100 | V |
nominal armature current | 100 | A |
nominal speed | 1425 | rpm |
nominal torque | 63.66 | Nm |
nominal mechanical output | 9.5 | kW |
efficiency | 95.0 | % |
armature resistance | 0.05 | Ohm at reference temperature |
reference temperature TaRef | 20 | °C |
temperature coefficient alpha20a | 0 | 1/K |
armature inductance | 0.0015 | H |
armature nominal temperature TaNominal | 20 | °C |
armature operational temperature TaOperational | 20 | °C |
Extends from Machines.Interfaces.PartialBasicDCMachine (Partial model for DC machine).
Name | Description |
---|---|
Jr | Rotor's moment of inertia [kg.m2] |
useSupport | Enable / disable (=fixed stator) support |
Js | Stator's moment of inertia [kg.m2] |
useThermalPort | Enable / disable (=fixed temperatures) thermal port |
Operational temperatures | |
TaOperational | Operational armature temperature [K] |
Initialization | |
phiMechanical | Mechanical angle of rotor against stator [rad] |
wMechanical | Mechanical angular velocity of rotor against stator [rad/s] |
ia | Armature current [A] |
Nominal parameters | |
VaNominal | Nominal armature voltage [V] |
IaNominal | Nominal armature current (>0..Motor, <0..Generator) [A] |
wNominal | Nominal speed [rad/s] |
TaNominal | Nominal armature temperature [K] |
Nominal resistances and inductances | |
Ra | Armature resistance at TRef [Ohm] |
TaRef | Reference temperature of armature resistance [K] |
alpha20a | Temperature coefficient of armature resistance [1/K] |
La | Armature inductance [H] |
Losses | |
frictionParameters | Friction loss parameter record |
coreParameters | Armature core loss parameter record |
strayLoadParameters | Stray load loss parameter record |
brushParameters | Brush loss parameter record |
Name | Description |
---|---|
flange | Shaft |
support | Support at which the reaction torque is acting |
pin_ap | Positive armature pin |
pin_an | Negative armature pin |
Electrical shunt/separate excited linear DC machine
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 | 0.29 | kg.m2 |
rotor's moment of inertia | 0.15 | kg.m2 |
nominal armature voltage | 100 | V |
nominal armature current | 100 | A |
nominal torque | 63.66 | Nm |
nominal speed | 1425 | rpm |
nominal mechanical output | 9.5 | kW |
efficiency | 95.0 | % only armature |
efficiency | 94.06 | % including excitation |
armature resistance | 0.05 | Ohm at reference temperature |
reference temperature TaRef | 20 | °C |
temperature coefficient alpha20a | 0 | 1/K |
armature inductance | 0.0015 | H |
nominal excitation voltage | 100 | V |
nominal excitation current | 1 | A |
excitation resistance | 100 | Ohm at reference temperature |
reference temperature TeRef | 20 | °C |
temperature coefficient alpha20e | 0 | 1/K |
excitation inductance | 1 | H |
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 |
Extends from Machines.Interfaces.PartialBasicDCMachine (Partial model for DC machine).
Name | Description |
---|---|
Jr | Rotor's moment of inertia [kg.m2] |
useSupport | Enable / disable (=fixed stator) support |
Js | Stator's moment of inertia [kg.m2] |
useThermalPort | Enable / disable (=fixed temperatures) thermal port |
Operational temperatures | |
TaOperational | Operational armature temperature [K] |
TeOperational | Operational (shunt) excitation temperature [K] |
Initialization | |
phiMechanical | Mechanical angle of rotor against stator [rad] |
wMechanical | Mechanical angular velocity of rotor against stator [rad/s] |
ia | Armature current [A] |
Nominal parameters | |
VaNominal | Nominal armature voltage [V] |
IaNominal | Nominal armature current (>0..Motor, <0..Generator) [A] |
wNominal | Nominal speed [rad/s] |
TaNominal | Nominal armature temperature [K] |
Nominal resistances and inductances | |
Ra | Armature resistance at TRef [Ohm] |
TaRef | Reference temperature of armature resistance [K] |
alpha20a | Temperature coefficient of armature resistance [1/K] |
La | Armature inductance [H] |
Losses | |
frictionParameters | Friction loss parameter record |
coreParameters | Armature core loss parameter record |
strayLoadParameters | Stray load loss parameter record |
brushParameters | Brush loss parameter record |
Excitation | |
IeNominal | Nominal excitation current [A] |
Re | Field excitation resistance at TRef [Ohm] |
TeRef | Reference temperature of excitation resistance [K] |
alpha20e | Temperature coefficient of excitation resistance [1/K] |
Le | Total field excitation inductance [H] |
sigmae | Stray fraction of total excitation inductance |
Name | Description |
---|---|
flange | Shaft |
support | Support at which the reaction torque is acting |
pin_ap | Positive armature pin |
pin_an | Negative armature pin |
pin_ep | Positive excitation pin |
pin_en | Negative excitation pin |
Series excited linear DC machine
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 | 0.29 | kg.m2 |
rotor's moment of inertia | 0.15 | kg.m2 |
nominal armature voltage | 100 | V |
nominal armature current | 100 | A |
nominal torque | 63.66 | Nm |
nominal speed | 1410 | rpm |
nominal mechanical output | 9.4 | kW |
efficiency | 94.0 | % only armature |
armature resistance | 0.05 | Ohm at reference temperature |
reference temperature TaRef | 20 | °C |
temperature coefficient alpha20a | 0 | 1/K |
armature inductance | 0.0015 | H |
excitation resistance | 0.01 | Ohm at reference temperature |
reference temperature TeRef | 20 | °C |
temperature coefficient alpha20e | 0 | 1/K |
excitation inductance | 0.0005 | H |
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 |
Extends from Machines.Interfaces.PartialBasicDCMachine (Partial model for DC machine).
Name | Description |
---|---|
Jr | Rotor's moment of inertia [kg.m2] |
useSupport | Enable / disable (=fixed stator) support |
Js | Stator's moment of inertia [kg.m2] |
useThermalPort | Enable / disable (=fixed temperatures) thermal port |
Operational temperatures | |
TaOperational | Operational armature temperature [K] |
TeOperational | Operational series excitation temperature [K] |
Initialization | |
phiMechanical | Mechanical angle of rotor against stator [rad] |
wMechanical | Mechanical angular velocity of rotor against stator [rad/s] |
ia | Armature current [A] |
Nominal parameters | |
VaNominal | Nominal armature voltage [V] |
IaNominal | Nominal armature current (>0..Motor, <0..Generator) [A] |
TaNominal | Nominal armature temperature [K] |
TeNominal | Nominal series excitation temperature [K] |
Nominal resistances and inductances | |
Ra | Armature resistance at TRef [Ohm] |
TaRef | Reference temperature of armature resistance [K] |
alpha20a | Temperature coefficient of armature resistance [1/K] |
La | Armature inductance [H] |
Losses | |
frictionParameters | Friction loss parameter record |
coreParameters | Armature core loss parameter record |
strayLoadParameters | Stray load loss parameter record |
brushParameters | Brush loss parameter record |
Excitation | |
Re | Series excitation resistance at TRef [Ohm] |
TeRef | Reference temperature of excitation resistance [K] |
alpha20e | Temperature coefficient of excitation resistance [1/K] |
Le | Total field excitation inductance [H] |
sigmae | Stray fraction of total excitation inductance |
Name | Description |
---|---|
flange | Shaft |
support | Support at which the reaction torque is acting |
pin_ap | Positive armature pin |
pin_an | Negative armature pin |
pin_ep | Positive series excitation pin |
pin_en | Negative series excitation pin |