Package Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities
Utilities for quasi static fundamental wave machines

Information

This icon indicates a package containing utility classes.

Extends from Modelica.​Icons.​UtilitiesPackage (Icon for utility packages).

Package Contents

NameDescription
CurrentControllerCurrent controller
MultiTerminalBoxTerminal box Y/D-connection
SwitchedRheostatRheostat which is shortened after a given time
SwitchYDY-D-switch
TerminalBoxTerminal box Y/D-connection
VfControllerVoltage-Frequency-Controller

Block Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities.​VfController
Voltage-Frequency-Controller

Information

This is a simple voltage-frequency-controller. The amplitude of the voltage is linear dependent (VNominal/fNominal) on the frequency (input signal u), but limited by VNominal (nominal RMS voltage per phase). An m quasi static phasor signal is provided as output signal y, representing complex voltages. The output voltages may serve as inputs for complex voltage sources with phase input. Symmetrical voltages are assumed.

Fig. 1: Voltage vs. frequency of voltage frequency controller

Parameters

TypeNameDefaultDescription
Integerm3Number of phases
Angleorientation[m]-Modelica.Electrical.MultiPhase.Functions.symmetricOrientation(m)Orientation of phases
VoltageVNominal Nominal RMS voltage per phase
FrequencyfNominal Nominal frequency
AngleBasePhase0Common phase shift

Connectors

TypeNameDescription
output ComplexOutputy[m]Complex quasi static voltages (RMS)
input RealInputuFrequency input (Hz)

Model Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities.​TerminalBox
Terminal box Y/D-connection

Information

TerminalBox: at the bottom connected to both machine plugs, connect at the top to the grid as usual,
choosing Y-connection (StarDelta=Y) or D-connection (StarDelta=D).

Parameters

TypeNameDefaultDescription
Integerm3Number of phases
StringterminalConnection Choose Y=star/D=delta

Connectors

TypeNameDescription
PositivePlugplug_spTo positive stator plug
NegativePlugplug_snTo negative stator plug
PositivePlugplugSupplyTo grid
NegativePinstarpoint 

Model Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities.​MultiTerminalBox
Terminal box Y/D-connection

Information

TerminalBox: at the bottom connected to both machine plugs, connect at the top to the grid as usual,
choosing Y-connection (StarDelta=Y) or D-connection (StarDelta=D).

Parameters

TypeNameDefaultDescription
Integerm3Number of phases
final IntegermSystemsElectrical.MultiPhase.Functions.numberOfSymmetricBaseSystems(m) 
final IntegermBasicinteger(m / mSystems) 
StringterminalConnection Choose Y=star/D=delta

Connectors

TypeNameDescription
PositivePlugplug_spTo positive stator plug
NegativePlugplug_snTo negative stator plug
PositivePlugplugSupplyTo grid
NegativePlugstarpoint 

Model Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities.​SwitchedRheostat
Rheostat which is shortened after a given time

Information

Switched rheostat, used for starting induction motors with slipring rotor:

The external rotor resistance RStart is shortened at time tStart.

Parameters

TypeNameDefaultDescription
Integerm3Number of phases
ResistanceRStart Starting resistance
TimetStart Duration of switching on the starting resistor

Connectors

TypeNameDescription
PositivePlugplug_pTo positive rotor plug
NegativePlugplug_nTo negative rotor plug

Model Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities.​CurrentController
Current controller

Information

This is a simple current controller. The desired RMS values of d and q component of the quasi static space phasor current in rotor fixed coordinate system are the inputs id_rms and iq_rms. Using the given rotor position input phi, the quasi static m phase output currents i[m] are calculated. The model output can be used to feed a quasi static current source with phase input to supply synchronous machines.

Parameters

TypeNameDefaultDescription
Integerm3Number of phases
Integerp Number of pole pairs
Anglegamma00Offset added to electrical rotor angle

Connectors

TypeNameDescription
input RealInputid_rms 
input RealInputiq_rms 
input RealInputphi 
output ComplexOutputI[m]Multi phase current phasors
output RealOutputgammaReference angle of source

Model Modelica.​Magnetic.​QuasiStatic.​FundamentalWave.​Utilities.​SwitchYD
Y-D-switch

Information

Simple Star-Delta-switch.
If control is false, plug_sp and plug_sn are star connected and plug_sp connected to the supply plug.
If control is true, plug_sp and plug_sn are delta connected and they are connected to the supply plug.

Parameters

TypeNameDefaultDescription
Integerm3Number of phases

Connectors

TypeNameDescription
PositivePlugplugSupplyTo grid
PositivePlugplug_spTo positive stator plug
NegativePlugplug_snTo negative stator plug
input BooleanInputcontrol[m] 

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