FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering, in particular to conversion equipment, and can be used in electrical engineering systems with frequency-controlled electric drives of different power, where electric drives are connected to common buses of constant voltage, and asynchronous motors of electric drives perform regular transitions from motor mode to generator mode.
EFFECT: technical result consists in possibility of two-way energy exchange between DC buses and supply mains of three-phase alternating current with low emission of harmonic distortions of current into supply mains using one device based on bridge transistor switch and three-phase rectifier.
1 cl, 1 dwg
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