Modelica.Magnetic.FundamentalWave.BasicMachines.AsynchronousInductionMachines

Information

This package provides squirrel cage and slip ring induction machine models.

See also

SynchronousInductionMachines

Package Content

Name	Description
AIM_SquirrelCage	Asynchronous induction machine with squirrel cage
AIM_SlipRing	Asynchronous induction machine with slip ring rotor

Modelica.Magnetic.FundamentalWave.BasicMachines.AsynchronousInductionMachines.AIM_SquirrelCage

Information

Resistances and stray inductances of the machine refer to an m phase stator. The symmetry of the stator and rotor is assumed. The machine models take the following loss effects into account:

• heat losses in the temperature dependent stator winding resistances
• heat losses in the temperature dependent cage resistances
• friction losses
• core losses (only eddy current losses, no hysteresis losses)
• stray load losses

See also

AIM_SlipRing,

Parameters

Name	Description
m	Number of stator phases
Jr	Rotor inertia [kg.m2]
useSupport	Enable / disable (=fixed stator) support
Js	Stator inertia [kg.m2]
useThermalPort	Enable / disable (=fixed temperatures) thermal port
p	Number of pole pairs (Integer)
fsNominal	Nominal frequency [Hz]
effectiveStatorTurns	Effective number of stator turns
Operational temperatures
TsOperational	Operational temperature of stator resistance [K]
TrOperational	Operational temperature of rotor resistance [K]
Initialization
phiMechanical	Mechanical angle of rotor against stator [rad]
wMechanical	Mechanical angular velocity of rotor against stator [rad/s]
Nominal resistances and inductances
TsRef	Reference temperature of stator resistance [K]
alpha20s	Temperature coefficient of stator resistance at 20 degC [1/K]
Lszero	Stator zero inductance [H]
Lm	Stator main field inductance [H]
Lrsigma	Rotor leakage inductance of equivalent m phase winding w.r.t. stator side [H]
Rr	Rotor resistance of equivalent m phase winding w.r.t. stator side [Ohm]
TrRef	Reference temperature of rotor resistance [K]
alpha20r	Temperature coefficient of rotor resistance at 20 degC [1/K]
Losses
frictionParameters	Friction losses
statorCoreParameters	Stator core losses; all parameters refer to stator side
strayLoadParameters	Stray load losses

Connectors

Name	Description
flange	Shaft
support	Support at which the reaction torque is acting
plug_sp	Positive plug of stator
plug_sn	Negative plug of stator

Modelica.Magnetic.FundamentalWave.BasicMachines.AsynchronousInductionMachines.AIM_SlipRing

Information

Resistances and stray inductances of the machine always refer to either stator or rotor. The symmetry of the stator and rotor is assumed. The number of stator and rotor phases may be different. The machine models take the following loss effects into account:

• heat losses in the temperature dependent stator winding resistances
• heat losses in the temperature dependent rotor winding resistances
• friction losses
• stator and rotor core losses (only eddy current losses, no hysteresis losses)
• stray load losses

See also

AIM_SquirrelCage,

Parameters

Name	Description
mr	Number of rotor phases
m	Number of stator phases
Jr	Rotor inertia [kg.m2]
useSupport	Enable / disable (=fixed stator) support
Js	Stator inertia [kg.m2]
useThermalPort	Enable / disable (=fixed temperatures) thermal port
p	Number of pole pairs (Integer)
fsNominal	Nominal frequency [Hz]
effectiveStatorTurns	Effective number of stator turns
useTurnsRatio	Use TurnsRatio or calculate from locked-rotor voltage?
TurnsRatio	Effective number of stator turns / effective number of rotor turns
VsNominal	Nominal stator voltage per phase [V]
VrLockedRotor	Locked rotor voltage per phase [V]
Operational temperatures
TsOperational	Operational temperature of stator resistance [K]
TrOperational	Operational temperature of rotor resistance [K]
Initialization
phiMechanical	Mechanical angle of rotor against stator [rad]
wMechanical	Mechanical angular velocity of rotor against stator [rad/s]
Nominal resistances and inductances
TsRef	Reference temperature of stator resistance [K]
alpha20s	Temperature coefficient of stator resistance at 20 degC [1/K]
Lszero	Stator zero inductance [H]
Lm	Stator main field inductance [H]
Lrsigma	Rotor leakage inductance w.r.t. rotor side [H]
Lrzero	Rotor zero inductance w.r.t. rotor side [H]
Rr	Rotor resistance per phase w.r.t. rotor side [Ohm]
TrRef	Reference temperature of rotor resistance [K]
alpha20r	Temperature coefficient of rotor resistance at 20 degC [1/K]
Losses
frictionParameters	Friction losses
statorCoreParameters	Stator core losses; all parameters refer to stator side
strayLoadParameters	Stray load losses
rotorCoreParameters	Rotor core losses, all quantities refer to rotor side

Connectors

Name	Description
flange	Shaft
support	Support at which the reaction torque is acting
plug_sp	Positive plug of stator
plug_sn	Negative plug of stator
plug_rn	Negative plug of rotor
plug_rp	Positive plug of rotor