MULTIPOLE RING WINDING Russian patent published in 2018 - IPC H01F27/29 H01F30/14 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, to transformers with a rotating field, and can be used in multipolar transformers with a rotating field and semiconductor converters based on them. Invention is directed to reducing the number of bends of a ring winding by combining groups of coils lying at different poles, to the common section of the ring winding, which is commutated as part of the converter as a unit when the coil groups are serially connected.

EFFECT: technical result is a reduction in the number of switched bends of the ring winding and the semiconductor keys required for this, possibility of using any number of magnetic poles in a transformer with a rotating field, simplifying the assembly technology.

1 cl, 7 dwg