FIELD: electric engineering.
SUBSTANCE: in proposed synchronous electric machine shaft (3) of rotors is driven by external motor, in windings (2) electromotive force is induced from magnetic field of permanent rotor magnets (9). In winding (5) of rotor (4) current is supplied from source (8), which also develops magnetic field. In windings (1) EMF is also induced, which coincides with EMF of winding (2) and is summed up with it. At the outlet of electric machine there is a total EMF. If a short circuit occurs at the outlet, then to limit it, current from source (8) changes direction.
EFFECT: reduction of electric energy consumption.
1 dwg
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