Winding
Purpose
Ideal winding defining an electro-magnetic interface
Library
Magnetic
Description
The Winding forms the interface between the electrical and the magnetic domain. A winding of N turns is described with the equations:
where and
are voltage and current at the electrical terminals.
is the
magneto-motive force (MMF) and
is the rate-of-change of the magnetic flux
through the winding. The left-hand side of the equations above refers to the electrical
domain, the right-hand side to the magnetic domain.
The sign conventions used for the electrical and magnetic quantities are illustrated in the figure below for the two polarities of the winding. Notice the positions of the black dot and the brown arrow in the winding symbol.
Parameters
- Number of turns
- Specifies the number of winding turns.
- Polarity
- Specifies the polarity of the winding. Choosing a negative polarity is equivalent to specifying a negative number of turns.
Probe Signals
- Winding voltage
- The voltage measured from the positive (marked) to the negative electrical terminal of the winding, in volts (V).
- Winding current
- The current flowing through the winding, in amperes (A). A current entering the winding at the marked terminal is counted as positive.
- MMF
- The magneto-motive force measured from the marked to the unmarked magnetic terminal, in ampere-turns (A).