| 摘要 |
The invention relates to electric engineering. A three-phase transformer comprises low and high voltage windings in every phase and a compose magnet system. The magnet system of the transformer is solid-symmetric one and consists of a yoke and six limbs of magnet made as a six-beam star of limbs with angles of 60° between them. Outside, limbs are embraces by the yoke. On the other limbs (solid angle 120°), a primary and a secondary winding are located. The other limbs are free of windings and being shunted. On each of six yoke sections, an addition bias winding are located, two for each phase. The magnet system of the transformer may be realized as a cylinder having cross section presents in the form of a six-beam star of limbs embraces by the ring-like yoke of in the form of hexagon prism with cross-section as six-beam star of limbs embraced by hexagon-like yoke. The proportion between width of the magnet system of the transformer and width of limbs exceeds 1. The invention allows ratio of transformer power and weight for active materials to be increased, provides modulating control of three phase voltage and modulating control of three-phase network balancing. |
