Magnetic impedance

Magnetic Circuits

Conventional Magnetic Circuits

Phasor Magnetic Circuits

Related Concepts

Gyrator-capacitor model variables
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Magnetic impedance (SI Unit: -Ω−1) is the ratio of a sinusoidal magnetic tension Nm to a sinusoidal magnetic current IMm in a gyrator-capacitor model. Analogous to electrical impedance, magnetic impedance is likewise a complex variable.

z_M = \frac{N}{I_M} = \frac{N_m}{I_{Mm}}

Magnetic impedance is also called the full magnetic resistance. It is derived from:

rM = zMcos ϕ, the effective magnetic resistance (real)
xM = zMsin ϕ, the reactive magnetic resistance (imaginary)

The phase angle ϕ of the magnetic impedance is equal to:

\phi = \arctan {\frac{x_M}{r_M}}

References

  • Pohl R. W. ELEKTRIZITÄTSLEHRE. – Berlin-Gottingen-Heidelberg: SPRINGER-VERLAG, 1960.
  • Popov V. P. The Principles of Theory of Circuits. – M.: Higher School, 1985, 496 p. (In Russian).
  • Küpfmüller K. Einführung in die theoretische Elektrotechnik, Springer-Verlag, 1959.

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