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Variable magnetic coupling between two windings
This component models two coupled windings with variable self and mutual inductivities and variable winding resistances. In the component icon the positive terminal of phase 1 is marked with a dot.
The component is controlled with three vector signals: the momentary resistance
values , the momentary self and mutual inductance values
, and
their derivative with respect to time
. It is the responsibility of the user
to provide the correct derivatives. Depending on the connectivity, certain
values of
,
, and
create a singularity. This will lead to a runtime
error.
If the two winding currents are electrically independent, the two equations have to be solved simultaneously for the current derivatives:
If the two winding currents are electrically dependent, we have
or
If one winding - e.g. winding 1 - is open-circuited, we have
If both windings are open-circuited, we have