Steady State AC Magnetic: typical examples

Typical examples

As for Transient Magnetic applications, we can distinguish two typical examples, which correspond schematically to two classes of problems:

• the magnetic problems
• the electric conducting problems

These two typical examples are depicted in the next blocks. An important difference with respect to the Transient Magnetic applications is the absence of magnets.

Typical example (1)

A first typical example of a problem treated as a Steady state AC Magnetic application is presented in the figure below. It concerns a typical example without coupling to an external electric circuit.

	air or vacuum
	magnetic media (non conducting)
	conducting media (non magnetic) negligible EC *
	conducting media (magnetic or not) with possible EC*

Passive conductor: definition (reminder)

In the previous typical example (1), the conducting medium called “passive”

() is a medium where the current is of the induced type. We can also call it the conductor “supplied” only by induction.

Typical example (2)

A second typical example of a problem treated as a Steady state AC Magnetic application is presented in the figure below. It is an example with coupling to an external electric circuit .

	air or vacuum
	magnetic media (non conducting)
	conducting media (non magnetic) negligible EC *
	conducting media (magnetic or not) with possible EC*

Active conductor: definition (reminder)

In the previous typical example (2), the conducting medium can be a medium:

• “passive” (): as in the previous example
• “active” (): the conductor is supplied by an external sinusoidal voltage or current AC source. It can also be “supplied” by induction.