Modelica.Electrical.Machines.BasicMachines.Components

Machine components like AirGaps

Information

This package contains components for modeling electrical machines, specially threephase induction machines, based on space phasor theory. These models use package SpacePhasors.

Extends from Modelica.Icons.Library (Icon for library).

Package Content

Name Description

PartialAirGap Partial airgap model

AirGapS Airgap in stator-fixed coordinate system

AirGapR Airgap in rotor-fixed coordinate system

SquirrelCage Squirrel Cage

DamperCage Squirrel Cage

ElectricalExcitation Electrical excitation

PermanentMagnet Permanent magnet excitation

PartialAirGapDC Partial airgap model of a DC machine

AirGapDC Linear airgap model of a DC machine

BasicTransformer Partial model of threephase transformer

PartialCore Partial model of transformer core with 3 windings

IdealCore Ideal transformer with 3 windings

Name	Description
PartialAirGap	Partial airgap model
AirGapS	Airgap in stator-fixed coordinate system
AirGapR	Airgap in rotor-fixed coordinate system
SquirrelCage	Squirrel Cage
DamperCage	Squirrel Cage
ElectricalExcitation	Electrical excitation
PermanentMagnet	Permanent magnet excitation
PartialAirGapDC	Partial airgap model of a DC machine
AirGapDC	Linear airgap model of a DC machine
BasicTransformer	Partial model of threephase transformer
PartialCore	Partial model of transformer core with 3 windings
IdealCore	Ideal transformer with 3 windings

Modelica.Electrical.Machines.BasicMachines.Components.PartialAirGap

Partial airgap model

Modelica.Electrical.Machines.BasicMachines.Components.PartialAirGap

Information

Partial model of the airgap, using only equations.

Parameters

Type Name Default Description

Integer m 3 number of phases

Integer p number of pole pairs

Type	Name	Default	Description
Integer	m	3	number of phases
Integer	p		number of pole pairs

Connectors

Type Name Description

Flange_a flange

Flange_a support support at which the reaction torque is acting

SpacePhasor spacePhasor_s

SpacePhasor spacePhasor_r

Type	Name	Description
Flange_a	flange
Flange_a	support	support at which the reaction torque is acting
SpacePhasor	spacePhasor_s
SpacePhasor	spacePhasor_r

Modelica definition

partial model PartialAirGap "Partial airgap model"
  parameter Integer m=3 "number of phases";
  parameter Integer p(min=1) "number of pole pairs";
  output Modelica.SIunits.Torque tauElectrical;
  Modelica.SIunits.Angle gamma "Rotor displacement angle";
  Modelica.SIunits.Current i_ss[2] 
    "Stator current space phasor with respect to the stator fixed frame";
  Modelica.SIunits.Current i_sr[2] 
    "Stator current space phasor with respect to the rotor fixed frame";
  Modelica.SIunits.Current i_rs[2] 
    "Rotor current space phasor with respect to the stator fixed frame";
  Modelica.SIunits.Current i_rr[2] 
    "Rotor current space phasor with respect to the rotor fixed frame";
  Modelica.SIunits.MagneticFlux psi_ms[2] 
    "Magnetizing flux phasor with respect to the stator fixed frame";
  Modelica.SIunits.MagneticFlux psi_mr[2] 
    "Magnetizing flux phasor with respect to the rotor fixed frame";
  Real RotationMatrix[2,2] "matrix of rotation from rotor to stator";
public 
  Modelica.Mechanics.Rotational.Interfaces.Flange_a flange;
  Modelica.Mechanics.Rotational.Interfaces.Flange_a support 
    "support at which the reaction torque is acting";
  Machines.Interfaces.SpacePhasor spacePhasor_s;
  Machines.Interfaces.SpacePhasor spacePhasor_r;
equation 
  // mechanical angle of the rotor of an equivalent 2-pole machine
  gamma=p*(flange.phi-support.phi);
  RotationMatrix={{+cos(gamma),-sin(gamma)},{+sin(gamma),+cos(gamma)}};
  i_ss = spacePhasor_s.i_;
  i_ss = RotationMatrix*i_sr;
  i_rr = spacePhasor_r.i_;
  i_rs = RotationMatrix*i_rr;
  // Stator voltage induction
  spacePhasor_s.v_ = der(psi_ms);
  // Rotor voltage induction
  spacePhasor_r.v_ = der(psi_mr);
  // Electromechanical torque (cross product of current and flux space phasor)
  tauElectrical = m/2*p*(spacePhasor_s.i_[2]*psi_ms[1] - spacePhasor_s.i_[1]*psi_ms[2]);
  flange.tau = -tauElectrical;
  support.tau = tauElectrical;
end PartialAirGap;

Modelica.Electrical.Machines.BasicMachines.Components.AirGapS

Airgap in stator-fixed coordinate system

Modelica.Electrical.Machines.BasicMachines.Components.AirGapS

Information

Model of the airgap in stator-fixed coordinate system, using only equations.

Extends from PartialAirGap (Partial airgap model).

Parameters

Type Name Default Description

Inductance Lm main field inductance [H]

Integer m 3 number of phases

Integer p number of pole pairs

Type	Name	Default	Description
Inductance	Lm		main field inductance [H]
Integer	m	3	number of phases
Integer	p		number of pole pairs

Connectors

Type Name Description

Flange_a flange

Flange_a support support at which the reaction torque is acting

SpacePhasor spacePhasor_s

SpacePhasor spacePhasor_r

Type	Name	Description
Flange_a	flange
Flange_a	support	support at which the reaction torque is acting
SpacePhasor	spacePhasor_s
SpacePhasor	spacePhasor_r

Modelica definition

model AirGapS "Airgap in stator-fixed coordinate system"
  parameter Modelica.SIunits.Inductance Lm "main field inductance";
  extends PartialAirGap;
  Modelica.SIunits.Current i_ms[2] 
    "Magnetizing current space phasor with respect to the stator fixed frame";
protected 
  parameter Modelica.SIunits.Inductance L[2,2]={{Lm,0},{0,Lm}} 
    "inductance matrix";
equation 
  // Magnetizing current with respect to the stator reference frame
  i_ms = i_ss + i_rs;
  // Magnetizing flux linkage with respect to the stator reference frame
  psi_ms = L*i_ms;
  // Magnetizing flux linkage with respect to the rotor reference frame
  psi_mr = transpose(RotationMatrix)*psi_ms;
end AirGapS;

Modelica.Electrical.Machines.BasicMachines.Components.AirGapR

Airgap in rotor-fixed coordinate system

Modelica.Electrical.Machines.BasicMachines.Components.AirGapR

Information

Model of the airgap in rotor-fixed coordinate system, using only equations.

Extends from PartialAirGap (Partial airgap model).

Parameters

Type Name Default Description

Inductance Lmd main field inductance d-axis [H]

Inductance Lmq main field inductance q-axis [H]

Integer m 3 number of phases

Integer p number of pole pairs

Type	Name	Default	Description
Inductance	Lmd		main field inductance d-axis [H]
Inductance	Lmq		main field inductance q-axis [H]
Integer	m	3	number of phases
Integer	p		number of pole pairs

Connectors

Type Name Description

Flange_a flange

Flange_a support support at which the reaction torque is acting

SpacePhasor spacePhasor_s

SpacePhasor spacePhasor_r

Type	Name	Description
Flange_a	flange
Flange_a	support	support at which the reaction torque is acting
SpacePhasor	spacePhasor_s
SpacePhasor	spacePhasor_r

Modelica definition

model AirGapR "Airgap in rotor-fixed coordinate system"
  parameter Modelica.SIunits.Inductance Lmd "main field inductance d-axis";
  parameter Modelica.SIunits.Inductance Lmq "main field inductance q-axis";
  extends PartialAirGap;
  Modelica.SIunits.Current i_mr[2] 
    "Magnetizing current space phasor with respect to the rotor fixed frame";
protected 
  parameter Modelica.SIunits.Inductance L[2,2]={{Lmd,0},{0,Lmq}} 
    "inductance matrix";
equation 
  // Magnetizing current with respect to the rotor reference frame
  i_mr = i_sr + i_rr;
  // Main flux linkage with respect to the stator reference frame
  psi_mr = L*i_mr;
  // Main flux linkage with respect to the stator reference frame
  psi_ms = RotationMatrix*psi_mr;
  // Stator voltage induction
end AirGapR;

Modelica.Electrical.Machines.BasicMachines.Components.SquirrelCage

Squirrel Cage

Modelica.Electrical.Machines.BasicMachines.Components.SquirrelCage

Information

Model of a squirrel cage / damper cage in two axis.

Parameters

Type Name Default Description

Inductance Lrsigma rotor stray inductance per phase translated to stator [H]

Resistance Rr warm rotor resistance per phase translated to stator [Ohm]

Type	Name	Default	Description
Inductance	Lrsigma		rotor stray inductance per phase translated to stator [H]
Resistance	Rr		warm rotor resistance per phase translated to stator [Ohm]

Connectors

Type Name Description

SpacePhasor spacePhasor_r

Type	Name	Description
SpacePhasor	spacePhasor_r

Modelica definition

model SquirrelCage "Squirrel Cage"
  parameter Modelica.SIunits.Inductance Lrsigma 
    "rotor stray inductance per phase translated to stator";
  parameter Modelica.SIunits.Resistance Rr 
    "warm rotor resistance per phase translated to stator";
  Machines.Interfaces.SpacePhasor spacePhasor_r;
equation 
  spacePhasor_r.v_ = Rr * spacePhasor_r.i_ + Lrsigma * der(spacePhasor_r.i_);
end SquirrelCage;

Modelica.Electrical.Machines.BasicMachines.Components.DamperCage

Squirrel Cage

Modelica.Electrical.Machines.BasicMachines.Components.DamperCage

Information

Model of an unsymmetrical damper cage cage in two axis.

Parameters

Type Name Default Description

Inductance Lrsigmad stray inductance in d-axis per phase translated to stator [H]

Inductance Lrsigmaq stray inductance in q-axis per phase translated to stator [H]

Resistance Rrd warm resistance in d-axis per phase translated to stator [Ohm]

Resistance Rrq warm resistance in q-axis per phase translated to stator [Ohm]

Type	Name	Description
Inductance	Lrsigmad	stray inductance in d-axis per phase translated to stator [H]
Inductance	Lrsigmaq	stray inductance in q-axis per phase translated to stator [H]
Resistance	Rrd	warm resistance in d-axis per phase translated to stator [Ohm]
Resistance	Rrq	warm resistance in q-axis per phase translated to stator [Ohm]

Connectors

Type Name Description

SpacePhasor spacePhasor_r

Type	Name	Description
SpacePhasor	spacePhasor_r

Modelica definition

model DamperCage "Squirrel Cage"
  parameter Modelica.SIunits.Inductance Lrsigmad 
    "stray inductance in d-axis per phase translated to stator";
  parameter Modelica.SIunits.Inductance Lrsigmaq 
    "stray inductance in q-axis per phase translated to stator";
  parameter Modelica.SIunits.Resistance Rrd 
    "warm resistance in d-axis per phase translated to stator";
  parameter Modelica.SIunits.Resistance Rrq 
    "warm resistance in q-axis per phase translated to stator";
  Machines.Interfaces.SpacePhasor spacePhasor_r;

equation 
  spacePhasor_r.v_[1] = Rrd * spacePhasor_r.i_[1] + Lrsigmad * der(spacePhasor_r.i_[1]);
  spacePhasor_r.v_[2] = Rrq * spacePhasor_r.i_[2] + Lrsigmaq * der(spacePhasor_r.i_[2]);
end DamperCage;

Modelica.Electrical.Machines.BasicMachines.Components.ElectricalExcitation

Electrical excitation

Modelica.Electrical.Machines.BasicMachines.Components.ElectricalExcitation

Information

Model of an electrical excitation, converting excitation to space phasor.

Parameters

Type Name Default Description

Real turnsRatio stator current / excitation current

Type	Name	Default	Description
Real	turnsRatio		stator current / excitation current

Connectors

Type Name Description

SpacePhasor spacePhasor_r

PositivePin pin_ep

NegativePin pin_en

Type	Name	Description
SpacePhasor	spacePhasor_r
PositivePin	pin_ep
NegativePin	pin_en

Modelica definition

model ElectricalExcitation "Electrical excitation"
  parameter Real turnsRatio(start=1) "stator current / excitation current";
  Modelica.SIunits.Current ie "excitation current";
  Modelica.SIunits.Voltage ve "excitation voltage";
  Machines.Interfaces.SpacePhasor spacePhasor_r;
  Modelica.Electrical.Analog.Interfaces.PositivePin pin_ep;
  Modelica.Electrical.Analog.Interfaces.NegativePin pin_en;
equation 
  pin_ep.i + pin_en.i = 0;
  ie = +pin_ep.i;
  ve = pin_ep.v - pin_en.v;
  spacePhasor_r.i_ = {-ie*turnsRatio,0};
  ve = spacePhasor_r.v_[1]*turnsRatio*3/2;
end ElectricalExcitation;

Modelica.Electrical.Machines.BasicMachines.Components.PermanentMagnet

Permanent magnet excitation

Modelica.Electrical.Machines.BasicMachines.Components.PermanentMagnet

Information

Model of a permanent magnet excitation, characterized by an equivalent excitation current.

Parameters

Type Name Default Description

Current Ie equivalent excitation current [A]

Type	Name	Default	Description
Current	Ie		equivalent excitation current [A]

Connectors

Type Name Description

SpacePhasor spacePhasor_r

Type	Name	Description
SpacePhasor	spacePhasor_r

Modelica definition

model PermanentMagnet "Permanent magnet excitation"
  parameter Modelica.SIunits.Current Ie "equivalent excitation current";
  Machines.Interfaces.SpacePhasor spacePhasor_r;
equation 
  spacePhasor_r.i_ = {-Ie,0};
end PermanentMagnet;

Modelica.Electrical.Machines.BasicMachines.Components.PartialAirGapDC

Partial airgap model of a DC machine

Modelica.Electrical.Machines.BasicMachines.Components.PartialAirGapDC

Information

Linear model of the airgap (without saturation effects) of a DC machine, using only equations.
Induced excitation voltage is calculated from der(flux), where flux is defined by excitation inductance times excitation current.
Induced armature voltage is calculated from flux times angular velocity.

Parameters

Type Name Default Description

Real turnsRatio ratio of armature turns over number of turns of the excitation winding

Type	Name	Default	Description
Real	turnsRatio		ratio of armature turns over number of turns of the excitation winding

Connectors

Type Name Description

Flange_a flange

Flange_a support support at which the reaction torque is acting

PositivePin pin_ap

PositivePin pin_ep

NegativePin pin_an

NegativePin pin_en

Type	Name	Description
Flange_a	flange
Flange_a	support	support at which the reaction torque is acting
PositivePin	pin_ap
PositivePin	pin_ep
NegativePin	pin_an
NegativePin	pin_en

Modelica definition

partial model PartialAirGapDC "Partial airgap model of a DC machine"
  parameter Real turnsRatio 
    "ratio of armature turns over number of turns of the excitation winding";
  Modelica.SIunits.AngularVelocity w "Angluar velocity";
  Modelica.SIunits.Voltage vei 
    "Voltage drop across field excitation inductance";
  Modelica.SIunits.Current ie "Excitation current";
  Modelica.SIunits.MagneticFlux psi_e "Excitation flux";
  Modelica.SIunits.Voltage vai "Induced armature voltage";
  Modelica.SIunits.Current ia "Armature current";
  output Modelica.SIunits.Torque tauElectrical;
  Modelica.Mechanics.Rotational.Interfaces.Flange_a flange;
  Modelica.Mechanics.Rotational.Interfaces.Flange_a support 
    "support at which the reaction torque is acting";
  Modelica.Electrical.Analog.Interfaces.PositivePin pin_ap;
  Modelica.Electrical.Analog.Interfaces.PositivePin pin_ep;
  Modelica.Electrical.Analog.Interfaces.NegativePin pin_an;
  Modelica.Electrical.Analog.Interfaces.NegativePin pin_en;
equation 
  // armature pins
  vai = pin_ap.v - pin_an.v;
  ia = + pin_ap.i;
  ia = - pin_an.i;
  // excitation pins
  vei = pin_ep.v - pin_en.v;
  ie = + pin_ep.i;
  ie = - pin_en.i;
  // induced voltage across field excitation inductance
  vei = der(psi_e);
  // mechanical speed
  w = der(flange.phi)-der(support.phi);
  // induced armature voltage
  vai = turnsRatio * psi_e * w;
  // electrical torque (ia is perpendicular to flux)
  tauElectrical = turnsRatio * psi_e * ia;
  flange.tau = -tauElectrical;
  support.tau = tauElectrical;
end PartialAirGapDC;

Modelica.Electrical.Machines.BasicMachines.Components.AirGapDC

Linear airgap model of a DC machine

Modelica.Electrical.Machines.BasicMachines.Components.AirGapDC

Information

Extends from PartialAirGapDC (Partial airgap model of a DC machine).

Parameters

Type Name Default Description

Real turnsRatio ratio of armature turns over number of turns of the excitation winding

Inductance Le excitation inductance [H]

Type	Name	Default	Description
Real	turnsRatio		ratio of armature turns over number of turns of the excitation winding
Inductance	Le		excitation inductance [H]

Connectors

Type Name Description

Flange_a flange

Flange_a support support at which the reaction torque is acting

PositivePin pin_ap

PositivePin pin_ep

NegativePin pin_an

NegativePin pin_en

Type	Name	Description
Flange_a	flange
Flange_a	support	support at which the reaction torque is acting
PositivePin	pin_ap
PositivePin	pin_ep
NegativePin	pin_an
NegativePin	pin_en

Modelica definition

model AirGapDC "Linear airgap model of a DC machine"
  extends PartialAirGapDC;
  parameter Modelica.SIunits.Inductance Le "excitation inductance";
equation 
  // excitation flux: linearly dependent on excitation current
  psi_e = Le * ie;
end AirGapDC;

Modelica.Electrical.Machines.BasicMachines.Components.BasicTransformer

Partial model of threephase transformer

Modelica.Electrical.Machines.BasicMachines.Components.BasicTransformer

Information

Partialmodel of a threephase transformer, containing primary and secondary resistances and stray inductances, as well as the iron core. Circuit layout (vector group) of primary and secondary windings have to be defined.

Parameters

Type Name Default Description

Real n primary voltage (line-to-line) / secondary voltage (line-to-line)

Resistance R1 warm primary resistance per phase [Ohm]

Inductance L1sigma primary stray inductance per phase [H]

Resistance R2 warm secondary resistance per phase [Ohm]

Inductance L2sigma secondary stray inductance per phase [H]

Type	Name	Description
Real	n	primary voltage (line-to-line) / secondary voltage (line-to-line)
Resistance	R1	warm primary resistance per phase [Ohm]
Inductance	L1sigma	primary stray inductance per phase [H]
Resistance	R2	warm secondary resistance per phase [Ohm]
Inductance	L2sigma	secondary stray inductance per phase [H]

Connectors

Type Name Description

PositivePlug plug1

NegativePlug plug2

Type	Name	Description
PositivePlug	plug1
NegativePlug	plug2

Modelica definition

partial model BasicTransformer 
  "Partial model of threephase transformer"
  constant Integer m(min=1) = 3 "Number of phases";
  constant String VectorGroup="Yy00";
  parameter Real n(start=1) 
    "primary voltage (line-to-line) / secondary voltage (line-to-line)";
  parameter Modelica.SIunits.Resistance R1(start=5E-3/(if C1=="D" then 1 else 3)) 
    "warm primary resistance per phase";
  parameter Modelica.SIunits.Inductance L1sigma(start=78E-6/(if C1=="D" then 1 else 3)) 
    "primary stray inductance per phase";
  parameter Modelica.SIunits.Resistance R2(start=5E-3/(if C2=="d" then 1 else 3)) 
    "warm secondary resistance per phase";
  parameter Modelica.SIunits.Inductance L2sigma(start=78E-6/(if C2=="d" then 1 else 3)) 
    "secondary stray inductance per phase";
  output Modelica.SIunits.Voltage v1[m]=plug1.pin.v "Primary voltage";
  output Modelica.SIunits.Current i1[m]=plug1.pin.i "Primary current";
  output Modelica.SIunits.Voltage v2[m]=plug2.pin.v "Secondary voltage";
  output Modelica.SIunits.Current i2[m]=plug2.pin.i "Secondary current";
protected 
  constant String C1 = Modelica.Utilities.Strings.substring(VectorGroup,1,1);
  constant String C2 = Modelica.Utilities.Strings.substring(VectorGroup,2,2);
  parameter Real ni=n*(if C2=="z" then sqrt(3) else 2)*(if C2=="d" then 1 else sqrt(3))/(if C1=="D" then 1 else sqrt(3));
public 
  Modelica.Electrical.MultiPhase.Interfaces.PositivePlug plug1(final m=m);
  Modelica.Electrical.MultiPhase.Interfaces.NegativePlug plug2(final m=m);
  Modelica.Electrical.MultiPhase.Basic.Resistor r1(
    final m=m,
    final R=fill(R1,m),
    final T_ref=fill(293.15,m),
    final alpha=zeros(m),
    final useHeatPort=false,
    final T=r1.T_ref);
  Modelica.Electrical.MultiPhase.Basic.Inductor l1sigma(final m=m, final L=fill(L1sigma, m));
  Modelica.Electrical.MultiPhase.Basic.Resistor r2(
    final m=m,
    final R=fill(R2,m),
    final T_ref=fill(293.15,m),
    final alpha=zeros(m),
    final T=r2.T_ref);
  Modelica.Electrical.MultiPhase.Basic.Inductor l2sigma(final m=m, final L=fill(L2sigma, m));
  IdealCore core(
    final m=m,
    final n12=ni,
    final n13=ni);
equation 
  connect(r1.plug_n,l1sigma. plug_p);
  connect(l2sigma.plug_n,r2. plug_p);
  connect(plug1, r1.plug_p);
  connect(r2.plug_n, plug2);
end BasicTransformer;

Modelica.Electrical.Machines.BasicMachines.Components.PartialCore

Partial model of transformer core with 3 windings

Modelica.Electrical.Machines.BasicMachines.Components.PartialCore

Information

Partial model of transformer core with 3 windings; saturation function flux versus magentizing current has to be defined.

Parameters

Type Name Default Description

Integer m 3 number of phases

Real n12 turns ratio 1:2

Real n13 turns ratio 1:3

Type	Name	Default	Description
Integer	m	3	number of phases
Real	n12		turns ratio 1:2
Real	n13		turns ratio 1:3

Connectors

Type Name Description

PositivePlug plug_p1

NegativePlug plug_n1

PositivePlug plug_p2

NegativePlug plug_n2

PositivePlug plug_p3

NegativePlug plug_n3

Type	Name	Description
PositivePlug	plug_p1
NegativePlug	plug_n1
PositivePlug	plug_p2
NegativePlug	plug_n2
PositivePlug	plug_p3
NegativePlug	plug_n3

Modelica definition

partial model PartialCore 
  "Partial model of transformer core with 3 windings"
  parameter Integer m(final min=1) = 3 "number of phases";
  parameter Real n12(start=1) "turns ratio 1:2";
  parameter Real n13(start=1) "turns ratio 1:3";
  Modelica.SIunits.Voltage v1[m] = plug_p1.pin.v  - plug_n1.pin.v;
  Modelica.SIunits.Current i1[m] = plug_p1.pin.i;
  Modelica.SIunits.Voltage v2[m] = plug_p2.pin.v  - plug_n2.pin.v;
  Modelica.SIunits.Current i2[m] = plug_p2.pin.i;
  Modelica.SIunits.Voltage v3[m] = plug_p3.pin.v  - plug_n3.pin.v;
  Modelica.SIunits.Current i3[m] = plug_p3.pin.i;
  Modelica.SIunits.Current im[m] = i1 + i2/n12 + i3/n13 "Magnetizing current";
  Modelica.Electrical.MultiPhase.Interfaces.PositivePlug plug_p1(final m=
        m);
  Modelica.Electrical.MultiPhase.Interfaces.NegativePlug plug_n1(final m=
        m);
  Modelica.Electrical.MultiPhase.Interfaces.PositivePlug plug_p2(final m=
        m);
  Modelica.Electrical.MultiPhase.Interfaces.NegativePlug plug_n2(final m=
        m);
  Modelica.Electrical.MultiPhase.Interfaces.PositivePlug plug_p3(final m=
        m);
  Modelica.Electrical.MultiPhase.Interfaces.NegativePlug plug_n3(final m=
        m);
equation 
  plug_p1.pin.i + plug_n1.pin.i = zeros(m);
  plug_p2.pin.i + plug_n2.pin.i = zeros(m);
  plug_p3.pin.i + plug_n3.pin.i = zeros(m);
end PartialCore;

Modelica.Electrical.Machines.BasicMachines.Components.IdealCore

Ideal transformer with 3 windings

Modelica.Electrical.Machines.BasicMachines.Components.IdealCore

Information

Ideal transformer with 3 windings: no magnetizing current.

Extends from PartialCore (Partial model of transformer core with 3 windings).

Parameters

Type Name Default Description

Integer m 3 number of phases

Real n12 turns ratio 1:2

Real n13 turns ratio 1:3

Type	Name	Default	Description
Integer	m	3	number of phases
Real	n12		turns ratio 1:2
Real	n13		turns ratio 1:3

Connectors

Type Name Description

PositivePlug plug_p1

NegativePlug plug_n1

PositivePlug plug_p2

NegativePlug plug_n2

PositivePlug plug_p3

NegativePlug plug_n3

Type	Name	Description
PositivePlug	plug_p1
NegativePlug	plug_n1
PositivePlug	plug_p2
NegativePlug	plug_n2
PositivePlug	plug_p3
NegativePlug	plug_n3

Modelica definition

model IdealCore "Ideal transformer with 3 windings"

  extends PartialCore;
equation 
  im = zeros(m);
  v1 = n12*v2;
  v1 = n13*v3;
end IdealCore;

HTML-documentation generated by Dymola Sun Jan 17 21:10:53 2010.