What is Permeance?
What is Permeance?
Permeability definition
Permeability is defined as a measure of the ease with which magnetic flux passes through a material or magnetic circuit.
The Permeability formula
The Magnetic Permeability is calculated by dividing the magnetic flux by the product of the number of ampere-turns and the magnetic path length to show its dependence on the magnetic flux and path.
Analogy with conductance
The Permeability in a magnetic circuit is similar to the conductivity in an electrical circuit and measures the degree to which a material allows magnetic flux to flow.
A unit of Permeability
The unit of Permeability is Weber per ampere-turns (Wb/AT) or Henry.
Permeability
The Permeability coefficient is the ratio of the flux density to the strength of the magnetic field and represents the operating point of the magnet on the B-H curve.
Magnetic Permeability calculation formula
Interpolation formula
u0= Free space permeability (vacuum)
ur= relative permeability of a magnetic material
l= Length of magnetic circuit (in meters)
A= cross-sectional area (square meters)
Magnetic Leakage Coefficient
The ratio of magnetic flux density to magnetic field strength at the working slope of the B-H curve.
The relationship between permeability and magnetic leakage coefficient
