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Hard Magnetic Material

 

Description

Variables

Parameters

Modelica Standard Library

Description

Typical values for remanence, coercivity, and the temperature coefficient of remanence are provided for common permanent magnetic materials.  The operating values are given by

Br=Brref1+αBrTopTref

HcB=HcBref1+αBrTopTref

μr=Brμ0HcB

Variables

Name

Units

Description

Modelica ID

HcB

Am

Coercivity at operating temperature

H_cB

Br

T

Remanence at operating temperature

B_r

μr

1

Relative permeability at operating temperature

mu_r

Parameters

Name

Default

Units

Description

Modelica ID

HcBref

1

Am

Coercivity at reference temperature

H_cBRef

Brref

1

T

Remanence at reference temperature

B_rRef

αBr

0

1K

Temperature coefficient

alpha_Br

Top

293.15

K

Operating temperature

T_op

Tref

293.15

K

Reference temperature

T_ref

Data

Material

HcBref

Brref

Tref

αBr

Top

BaseData

1

1

293.15

0

293.15

NdFeB

900000

1.2

293.15

-0.001

293.15

Sm2Co17

750000

1.02

293.15

-0.0003

293.15

SmCo5

720000

0.95

293.15

-0.0004

293.15

PlasticNdFeB

400000

0.58

293.15

-0.001

293.15

PlasticSmCo

385000

0.57

293.15

-0.0004

293.15

HardFerrite

170000

0.38

293.15

-0.002

293.15

PlasticHardFerrite

130000

0.21

293.15

-0.002

293.15

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Magnetic Library

Magnetic Material