| 摘要 |
PURPOSE:To remove a harmonic content of an even-numbered order in a gap magnetic flux density distribution by forming each phase winding of a full-pitch lamp winding at 100% pitch. CONSTITUTION:A mutual junction point between the first and second winding groups 1Va, 1Vb constituting a V phase winding 1V is connected with a terminal Vc and a capacitor 3 is connected between said terminal Vc and a single-phase input terminal B. Out of respective phase windings 1U, 1V, 1W, moreover, 1Ub, 1Vb, 1Wb of the winding group on the neutral point 2 side are identical with each other in their polarity and 1Ua, 1Va, 1Wa of the winding group on the three-phase output terminal side are connected so as to have a polarity which is the reverse of the former one. In this case, said windings are full-pitch lap windings at 100% coil pitch, that it, at an electrical angle of 2pi. Therefore, a harmonic content of an even-numbered order will be lost in a gap magnetic flux density distribution.
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