Seiden Mfg. Co., Ltd.

Tsunehiko Honna

Minoru Ishikawa

A three-phase high frequency transformer has: a ferrite core formed from three solid-cylindrical cores and a ceiling plate and a bottom plate; and three sets of coils having primary coils of a predetermined inner diameter that are formed by bending flat wires plural times in width directions of the flat wires, and secondary coils that are formed such that an inner diameter is the same as the inner diameter of the primary coils by bending flat wires, that have a width that is different than a width of the flat wires of the primary coils, in width directions of the flat wires, and the flat wires that structure the secondary coils are interposed within intervals of the flat wires that structure the primary coils, and the three sets of coils are structured such that inner peripheries of the primary coils and the secondary coils coincide, and are disposed such that the respective solid-cylindrical cores are inserted in respective inner portions, and the primary coils and the secondary coils are &#x394;-connected or Y-connected.

Three-phase high frequency transformer

A high frequency transformer with high conversion efficiency is provided. The high frequency transformer includes a first coil assemblyformed from a single flat wire, with first coilsA that are configured by winding the flat wire edgewise plural times and that are formed at specific intervals, and a second coil assemblyformed from a single flat wire, with second coilsA that are configured by winding the flat wire edgewise plural times and that are formed at specific intervals. In the primary coil assemblyand the secondary coil assembly, the primary coilsA are disposed at intervals to each other such that a winding end portion of one of adjacent primary coilsA opposes a winding start portion of the other of the adjacent primary coilsA, and one of the secondary coilsA is disposed in each interval between the primary coilsA such that a winding start portion of each secondary coilA opposes the winding end portion of one of the primary coilsA, and a winding end portion of each secondary coilA opposes the winding start portion of the other of the primary coils.

Growing community of inventors

Kanagawa, Japan

Tsunehiko Honna