This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionSchematic induction regulator.svg
English: This is a schematic of the connection of stator and rotor windings of an induction regulator. The goal in this case is to provide a continuous (analogic) variable transformer at the end of the line N+1-2-3.
Machine is powered by rotor slip-rings terminals R-S-T.
Ratio can be controlled by rotating the rotor inside the stator. Given that stator and rotor have the same number of turns, the output voltage will be in the range of [0,2U] being U the input voltage.
Diagram induction regulator
Hereafter the resulting electric phasor diagram. We can regard this connection as a modification of this schematic.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.