GenericHystTellinenSoftGeneric flux tube with soft magnetic hysteresis based on the Tellinen model and simple tanh()-functions |
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Flux tube element for modeling soft magnetic materials with ferromagnetic and dynamic hysteresis (eddy currents). The ferromagnetic hysteresis behavior is defined by the Tellinen hysteresis model. The shape of the limiting hysteresis loop (see Fig. 1) is described by simple hyperbolic tangent functions with 4 parameters. Therefore, the hysteresis shape variety is limited but the parameterization of the model is very simple and the model is relatively fast and robust. The rising (hystR) and falling (hystF) branches of the limiting hysteresis loop are defined by the following equations.
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Parameters (12)
| l |
Value: 0.1 Type: Length (m) Description: Length in direction of flux |
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| A |
Value: 1e-4 Type: Area (m²) Description: Area of cross section |
| V |
Value: A * l Type: Volume (m³) Description: Volume of FluxTube |
| useHeatPort |
Value: false Type: Boolean Description: = true, if HeatPort is enabled |
| T |
Value: 293.15 Type: Temperature (K) Description: Fixed device temperature if useHeatPort = false |
| includeEddyCurrents |
Value: false Type: Boolean Description: = true, if eddy current losses are enabled |
| sigma |
Value: 10e6 Type: Conductivity (S/m) Description: Conductivity of core material |
| d |
Value: 0.5e-3 Type: Length (m) Description: Thickness of lamination |
| Js |
Value: 1.8 Type: MagneticFluxDensity (T) Description: Saturation polarization |
| Br |
Value: 0.9 Type: MagneticFluxDensity (T) Description: Remanence |
| Hc |
Value: 120 Type: MagneticFieldStrength (A/m) Description: Coercitivity |
| K |
Value: 1 Type: Real Description: Slope of hysteresis in the saturation region (K*mu_0) |
Outputs (8)
| H |
Type: MagneticFieldStrength (A/m) Description: Magnetic field strength |
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| Hstat |
Type: MagneticFieldStrength (A/m) Description: Static (ferromagnetic) portion of the magnetic field strength |
| Heddy |
Type: MagneticFieldStrength (A/m) Description: Dynamic (eddy currents) portion of the magnetic field strength |
| B |
Type: MagneticFluxDensity (T) Description: Magnetic flux density |
| MagRel |
Type: Real Description: Relative magnetization at initialization (-1..1) |
| LossPowerStat |
Type: Power (W) Description: Ferromagnetic (static) hysteresis losses |
| LossPowerEddy |
Type: Power (W) Description: Eddy current losses (dynamic hysteresis losses) |
| asc |
Type: Boolean Description: True when der(Hstat)>0 |
Connectors (3)
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port_p |
Type: PositiveMagneticPort Description: Positive magnetic port |
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port_n |
Type: NegativeMagneticPort Description: Negative magnetic port |
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heatPort |
Type: HeatPort_a |
Used in Examples (1)
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Modelica.Magnetic.FluxTubes.Examples.Hysteresis Comparison of the different hysteresis models |