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Schrage MotorsThe Schrage motor is a variable speed motor that was commonly used in applications related to yarn and carpet making. It was developed in Sweden, but is not commonly used today.
The two sets of brushes can be moved to connect to the
same point on the commutator, or moved apart in either direction. When
they are in alignment, the stator windings are shorted and the motor behaves
like an induction motor with the rotor and stator swapped. As the brushes
are separated, voltage from auxiliary rotor winding is coupled to the
stator winding. The degree of separation and the direction of separation
varies the voltage and polarity of the voltage. The frequency of the voltage
applied to the stator is dependent on the slip. |
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Visits since 2 April 2009
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