Magnetic capacitance

Magnetic capacitance (capacitive magnetic reactance) (SI Unit: -Ω⁻¹) is a magnetic "reactance" which prevents magnetic "current" in oscillating magnetic circuits from rising. This is associated with high reluctance.

For harmonic regimes it is equal to:

$x_C = \frac{1}{\omega C_M}$

Where:

$C_M$ is the magnetic capacitivity (SI Unit: -s·Ω⁻¹)

$\omega$ is the angular frequency of the magnetic circuit

In complex form it is written as an imaginary number:

$-jx_C = -j\frac{1}{\omega C_M} = \frac{1}{j\omega C_M}$

The electrical potential energy sustained by magnetic capacitivity varies with the frequency of oscillations in magnetic fields. The average power in a given period is equal to zero. The magnetic capacitance is a reactive part of the magnetic circuit.^[1][2]

References

1. Pohl R. W. ELEKTRIZITÄTSLEHRE. – Berlin-Gottingen-Heidelberg: SPRINGER-VERLAG, 1960.
2. Popov V. P. The Principles of Theory of Circuits. – M.: Higher School, 1985, 496 p. (In Russian).