FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and is used in powerful installations. Rectifiers (3) with capacitors (4) supply direct current to three phases of inverters of same level (5, 8, 11; 6, 9, 11 and 7, 10, 13). Inverters (6, 9, 12) of the same level are powered by a common rectifier, which reduces number of elements.
EFFECT: increasing reliability.
1 cl, 1 dwg
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