Patent ID: 8729998

Claim:
A three-phase non-linear transformer, comprising: a ferromagnetic core comprising: at least three core frames each having first, second, and third sections of successive lamination layers, and wherein each of said first and third sections of lamination layers are wound successively upon one another and positioned at an angle of offset from adjacent layers to form a generally trapezoid-shaped cross section, said second section of lamination layers disposed between said first and third sections of lamination layers and wherein each layer of said second section of laminations is arranged at an angle of offset from adjacent lamination layers to form a generally rhomboid-shaped cross section, said at least three core frames arranged in a non-linear configuration, each of said at least three core frames comprising a leg section and a yoke section, each of said leg sections combining with a leg section of another core frame to form at least three core legs having substantially circular cross-sections, respectively; and coil assemblies mounted to each of the at least three core legs, said coil assemblies comprising: a secondary winding wound around each of the at least three core legs, respectively; and a primary winding disposed around the secondary winding.