FIELD: electric engineering, possible use in autonomous electric plants.
SUBSTANCE: asynchronous-synchronous two-frequency electric machine with two three-phased windings combined in common core with numbers of pole pairs p1 and p2 and with three-phased short-circuited winding with number of pole pairs p1 and excitation winding with number of pole pairs p2 combined on rotor, the latter being connectable to excitation current supply through contact rings and brushes, has a motor as supply of mechanical power, which drives the shaft of the machine, and additional three-phased excitation capacitor, connected in parallel to stator winding with number of pole pairs p1.
EFFECT: simplification of electric power supply and reduction of energy losses.
1 dwg
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