Contents
What is magnetic equivalent circuit?
Abstract: The magnetic equivalent circuit (MEC) method has been used to model the nonlinear magnetic field in electromagnetic devices for steady-state and dynamic conditions. However, for highly saturated electromagnetic devices, the conventional MEC method is inaccurate in predicting device characteristics.
What is the magnetic equivalent of electrical current?
The magnetic flux is analogous to the electric current. The magnetomotive force, mmf, is analogous to the electromotive force and may be considered the factor that sets up the flux. In a magnetic circuit, in summary, the magnetic flux is quantitatively equal to the magnetomotive force divided by the reluctance.
What is the magnetic circuit equivalent of resistance?
rϕ, where r is the reluctance of the magnetic circuit and is equivalent to resistance in the electric circuit. Reluctance is obtained by dividing the length of the magnetic path l by the permeability times the cross-sectional area A; thus r = l/μA, the Greek letter mu, μ, symbolizing the…
Which is a magnetic material?
There are a number of elements that are attracted by magnets, commonly referred to as ‘magnetic’. Magnetically hard materials are used to create permanent magnets made from alloys generally consisting of varying amounts of iron, aluminium, nickel, cobalt and rare earth elements samarium, dysprosium and neodymium.
Is H magnetic field?
The definition of H is H = B/μ − M, where B is the magnetic flux density, a measure of the actual magnetic field within a material considered as a concentration of magnetic field lines, or flux, per unit cross-sectional area; μ is the magnetic permeability; and M is the magnetization. …
Which is the equivalent to current in a magnetic circuit?
The equivalent to current I is the magnetic flux Φ The equivalent to voltage V is the magnetomotive Force F Magnetic circuits can be solved for the flux in each branch by application of the magnetic equivalent of Kirchhoff’s Voltage Law (KVL) for pure source/resistance circuits.
How is magnetic resistance similar to electrical resistance?
Magnetic reluctance, or magnetic resistance, is analogous to resistance in an electrical circuit (although it does not dissipate magnetic energy).
What does a magnetic field represent in an electric circuit?
Electric currents represent the flow of particles (electrons) and carry power, part or all of which is dissipated as heat in resistances. Magnetic fields don’t represent a “flow” of anything, and no power is dissipated in reluctances. The current in typical electric circuits is confined to the circuit,…
What is the cross sectional area of a magnetic circuit?
A is the cross-sectional area of the circuit in square metres. This is similar to the equation for electrical resistance in materials, with permeability being analogous to conductivity; the reciprocal of the permeability is known as magnetic reluctivity and is analogous to resistivity.