| 摘要 |
PURPOSE:To enhance a conversion efficiency by winding the first third phase windings coupled in Y-connection on a stator core, using the split points of two phase windings as single-phase input terminals, and inserting a capacitor between two phase windings, thereby eliminating a stepup transformer. CONSTITUTION:The first - third phase windings 1U, 1V, 1W are coupled in Y-connection with the one ends as a neutral points 2 to wind on a stator core. The other ends of phase windings 1U, 1V, 1W are led as 3-phase output terminals U, V, W, and the split points of the two phase windings 1U, 1W of the first - third phase windings 1U, 1V, 1W are led as single-phase input terminals A, B. A capacitor 3 is inserted between the windings 1V and 1W, and the windings groups 1Ub, 1Vb, 1Wb of the 3-phase output terminal side are so wound as to become reverse polarity to the neutral point side. |
