FIELD: electricity.
SUBSTANCE: frequency electric drive contains a three-phase electric motor the windings of which are connected in triangle and are connected to a voltage inverter. Poles of the inverter are connected to poles of the rectifier and filter designed as two series connected capacitors. The electric motor is fitted with leads from the middle of windings to which the terminals of the star connected three-phase capacitor battery are connected the zero point of which is connected to the middle point of series connected filter capacitors.
EFFECT: improved reliability.
1 dwg
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