Modelica.Electrical.Machines.BasicMachines.DCMachines

Models of DC machines

Information

This package contains models of DC machines:

DC_PermanentMagnet: DC machine with permanent magnet excitation
DC_ElectricalExcited: DC machine with electrical shunt or separate excitation
DC_SeriesExcited: DC machine with series excitation

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

Package Content

Name	Description
DC_PermanentMagnet	Permanent magnet DC machine
DC_ElectricalExcited	Electrical shunt/separate excited linear DC machine
DC_SeriesExcited	Series excited linear DC machine

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:

heat losses in the temperature dependent armature winding resistance
brush losses in the armature circuit
friction losses
core losses (only eddy current losses, no hysteresis losses)
stray load losses

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

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

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

Connectors

Name	Description
flange	Shaft
support	Support at which the reaction torque is acting
pin_ap	Positive armature pin
pin_an	Negative armature pin

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:

heat losses in the temperature dependent armature winding resistance
heat losses in the temperature dependent excitation winding resistance
brush losses in the armature circuit
friction losses
core losses (only eddy current losses, no hysteresis losses)
stray load losses

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

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

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

Connectors

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

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:

heat losses in the temperature dependent armature winding resistance
heat losses in the temperature dependent excitation winding resistance
brush losses in the armature circuit
friction losses
core losses (only eddy current losses, no hysteresis losses)
stray load losses

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

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

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

Connectors

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

Automatically generated Tue Apr 05 09:36:19 2016.