Package Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic
Characteristics of common permanent magnetic materials (temperature dependence considered)

Information

Typical values for remanence, coercivity and the temperature coefficient of remanence are provided for the common permanent magnetic materials illustrated below.

Demagnetization characteristics of included permanent magnetic materials

Linear demagnetization curves are modelled. The characteristic, temperature-dependent "knee" of many permanent magnetic materials is not considered, since proper design of permanent magnetic circuits should avoid operation of permanent magnets "below" that point due to partial demagnetization. As a result, the temperature coefficient of coercivity is not considered. Only the temperature coefficient of remanence alpha_Br is accounted for, since it describes the dependence of the demagnetization curve on the temperature sufficiently for the region "above the knee-point".

Additional user-specific materials can be defined as needed.

Extends from Modelica.​Icons.​MaterialPropertiesPackage (Icon for package containing property classes).

Package Contents

NameDescription
BaseDataRecord for permanent magnetic material data
HardFerriteHard ferrite sintered, exemplary values
NdFeBNdFeB sintered; exemplary values
PlasticHardFerritePlastic-bonded hard ferrite, exemplary values
PlasticNdFeBPlastic-bonded NdFeB, exemplary values
PlasticSmCoPlastic-bonded Sm-Co, exemplary values
Sm2Co17Sm2Co17 sintered, exemplary values
SmCo5SmCo5 sintered, exemplary values

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData
Record for permanent magnetic material data

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Icons.​Record (Icon for records).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​NdFeB
NdFeB sintered; exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​Sm2Co17
Sm2Co17 sintered, exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​SmCo5
SmCo5 sintered, exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​PlasticNdFeB
Plastic-bonded NdFeB, exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​PlasticSmCo
Plastic-bonded Sm-Co, exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​HardFerrite
Hard ferrite sintered, exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

Record Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​PlasticHardFerrite
Plastic-bonded hard ferrite, exemplary values

Information

Please refer to the description of the enclosing package HardMagnetic for a description of all permanent magnetic material characteristics of this package.

Extends from Modelica.​Magnetic.​FluxTubes.​Material.​HardMagnetic.​BaseData (Record for permanent magnetic material data).

Fields

TypeNameDescription
parameter MagneticFieldStrengthH_cBRefCoercivity at reference temperature
parameter MagneticFluxDensityB_rRefRemanence at reference temperature
parameter TemperatureT_refReference temperature
parameter LinearTemperatureCoefficientalpha_BrTemperature coefficient of remanence at reference temperature
parameter TemperatureT_opOperating temperature
parameter MagneticFluxDensityB_rRemanence at operating temperature
parameter MagneticFieldStrengthH_cBCoercivity at operating temperature
parameter RelativePermeabilitymu_rRelative permeability

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